https://www.mdu.se/

mdh.sePublikasjoner
Endre søk
Begrens søket
123 51 - 100 of 117
RefereraExporteraLink til resultatlisten
Permanent link
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annet format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annet språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
Treff pr side
  • 5
  • 10
  • 20
  • 50
  • 100
  • 250
Sortering
  • Standard (Relevans)
  • Forfatter A-Ø
  • Forfatter Ø-A
  • Tittel A-Ø
  • Tittel Ø-A
  • Type publikasjon A-Ø
  • Type publikasjon Ø-A
  • Eldste først
  • Nyeste først
  • Skapad (Eldste først)
  • Skapad (Nyeste først)
  • Senast uppdaterad (Eldste først)
  • Senast uppdaterad (Nyeste først)
  • Disputationsdatum (tidligste først)
  • Disputationsdatum (siste først)
  • Standard (Relevans)
  • Forfatter A-Ø
  • Forfatter Ø-A
  • Tittel A-Ø
  • Tittel Ø-A
  • Type publikasjon A-Ø
  • Type publikasjon Ø-A
  • Eldste først
  • Nyeste først
  • Skapad (Eldste først)
  • Skapad (Nyeste først)
  • Senast uppdaterad (Eldste først)
  • Senast uppdaterad (Nyeste først)
  • Disputationsdatum (tidligste først)
  • Disputationsdatum (siste først)
Merk
Maxantalet träffar du kan exportera från sökgränssnittet är 250. Vid större uttag använd dig av utsökningar.
  • 51.
    Jani, Yahya
    et al.
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM), Sweden.
    Kriipsalu, Mait
    Estonian University of Life Sciences, Estonia.
    Pehme, Kaur-Mikk
    Estonian University of Life Sciences, Estonia.
    Burlakovs, Juris
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM).
    Hogland, Marika
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM).
    Denafas, Gintaras
    Kaunas University of Technology, Lithuania.
    Hogland, William
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM).
    Composition of waste at an early EU-landfill of Torma in Estonia2017Inngår i: Iranica Journal of Energy and Environment (IJEE), ISSN 2079-2115, E-ISSN 2079-2123, Vol. 8, nr 2, s. 113-117Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Landfills represent a continuous environmental threat due to the emission of different greenhouse gases, which are mainly responsible for the climate changes, and the contaminated leachate that affects the surface and ground water recipients. The circular economy approach appeared as a useful solution to reduce the depletion of the Earth’s natural resources and the environmental risk effects by considering all of the lost resources like wastes including the landfills as potential secondary resources. It is well known that characterizing the composition of landfill waste is an essential step in specifying the recycling methods. In the current research the waste composition at one of the first EU regulations-compliant sanitary landfills (the Torma landfill in Estonia) was studied. The results showed that the fine fraction (<20 mm) represented 53% of the total excavated waste materials while the waste to energy fraction (plastics, woods etc.) was the highest within the coarse fraction (>20 mm). The present work emphasized that mining landfills can be a good solution either for extracting primary raw materials like metals, as a source for recovering energy, or for acquiring landfill space.

  • 52.
    Jani, Yahya
    et al.
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM), Sweden.
    Mutafela, Richard
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM).
    Burlakovs, Juris
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM).
    Hogland, William
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM).
    Smålands glassworks: a review of the recently published studies2018Inngår i: LinnaeusEco-Tech 2018, 19–21 November 2018, Kalmar, Sweden: Abstract book / [ed] Yahya Jani, Jelena Lundström, Viveka Svensson, William Hogland, Kalmar: Linnaeus university , 2018, s. 151-Konferansepaper (Annet vitenskapelig)
    Abstract [en]

    The historical contamination of Smålands glass industry by hazardous concentrations of different trace elements (such as Pb, As, Zn, Cd and others) is a fact that has been approved by many researchers. These studies covered the situation of the glassworks contamination from different angles. However, the recommended solution by the Swedish Environmental Protection Agency is landfilling. Dumping these masses means, on the first hand, losing huge amounts of the Earth natural resources as wastes and, on the second hand, losing any future opportunity of recycling or reusing due to mixing these masses with other hazardous wastes generated by different sectors. In this paper, we are trying to review and highlight the results obtained by some of the already published studies in this field to identify the gap and challenges of recycling or reusing options.

  • 53.
    Jani, Yahya
    et al.
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM), Sweden.
    Mutafela, Richard
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM).
    Ferrans, Laura
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM).
    Ling, Gao
    Beihua University, China.
    Burlakovs, Juris
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM).
    Hogland, William
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM).
    Phytoremediation as a promising method for the treatment of contaminated sediments2019Inngår i: Iranica Journal of Energy and Environment (IJEE), ISSN 2079-2115, E-ISSN 2079-2123, Vol. 10, nr 1, s. 58-64Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Dredging activities are necessary to maintain the navigation depth of harbors and channels. Additionally,dredging can prevent the loss of water bodies. A large amount of extracted sediments is produced around theworld. Removed material is widely disposed at open seas or landfills. Much of the dredged material is pollutedand is classified as unsuitable for open-sea disposal. In Sweden, many dredging activities are taking placenowadays like that in Oskarshamn harbor, Inre harbor Norrköping municipality and Malmfjärden bay inKalmar. In this review, the potential of phytoremediation as a treatment method is discussed with focus onsuggested methods for reusing the treated sediments. Recycling or reusing of dredged and treated sedimentswill preserve Earth natural resources as well as reduce diffusion of contaminants to the environment.

  • 54.
    Jani, Yahya
    et al.
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM), Sweden.
    Pehme, Kaur-Mikk
    Estonian University of Life Sciences, Estonia.
    Bucinskas, A.
    Kaunas University of Technology, Lithuania.
    Kriipsalu, Mait
    Estonian University of Life Sciences, Estonia.
    Burlakovs, Juris
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM).
    Hogland, William
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM).
    Speciation of Cu, Zn and Cr in Excavated Fine Fraction of Waste at two Landfills2018Inngår i: Iranica Journal of Energy and Environment (IJEE), ISSN 2079-2115, E-ISSN 2079-2123, Vol. 9, nr 2, s. 86-90Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Mining landfills and open dumpsites is associated with (40-70% by mass) fine fraction of particle sizes less than 20 or 10 mm. Soil and trace elements of considerable concentrations typically dominate the composition of this fraction. In the present paper, a modified three steps sequential extraction procedure was used to fractionate Cu, Zn and Cr in the fine fraction of waste sampled from Högbytorp (Sweden) and Torma (Estonia) landfills. The results showed that the major concentrations of Cu (98.8 and 98.6 wt%) and Cr (98.5% and 98.4 wt %) in fines from Högbytorp and Torma landfills, respectively. These data were found associated to the residual fraction. Noticeable concentrations of Cu and Cr were also found associated within the water -soluble fraction, which could be regarded as a potential risk. The Zn displayed different behavior by distributing in all the sequential extraction fractions in the fine fractions from the two landfills. Specifying the metals content using this method is essential to explore the valorization as well as the potential environmental risks by these fines fractions.

  • 55.
    Jensen, Charlotte
    et al.
    Mälardalens högskola, Akademin för ekonomi, samhälle och teknik.
    Nyberg, Therese
    Mälardalens högskola, Akademin för ekonomi, samhälle och teknik.
    A FEASIBILITY STUDY FOR THE ENVIRONMENTAL IMPACT ASSESSMENT OF THE ESTABLISHMENT OF THE TRANSFER- AND RECYCLING STATION IN GABORONE, BOTSWANA2014Independent thesis Basic level (degree of Bachelor), 10 poäng / 15 hpOppgave
    Fulltekst (pdf)
    fulltext
    Download (pdf)
    bilaga
  • 56.
    Johansson, Lena
    Royal Institute of Technology, Sweden.
    Removal of phosphorus from wastewater in constructed wetlands1996Inngår i: Proceedings of the Sino-Swedish Seminar on Sustainable USe of Water Resources - with Special Emphasis on Recharge and Protection of Groundwater / [ed] Castensson R. och Gustafsson J-E, 1996Konferansepaper (Annet vitenskapelig)
  • 57.
    Karlsson, Andreas
    Mälardalens högskola, Akademin för ekonomi, samhälle och teknik.
    Avfallshantering på byggarbetsplatser: Potential för en miljöeffektiv avfallshantering2013Independent thesis Basic level (degree of Bachelor), 10 poäng / 15 hpOppgave
    Abstract [en]

    This thesis concerns waste management on construction sites and was conducted on behalf of ICA Fastigheter.

    Areas of concern:

    • How can an environmentally-efficient waste management system on construction sites be defined? 
    • What potential exists for exploiting the waste resources that are generated?
    • How can the waste management be optimised by reducing the quantity of waste and by optimal sorting?
    • How can the client of a project influence the waste management?

    The purpose of the work was to investigate sustainable waste management in the building and construction sector and to highlight waste as a resource from an environmental and economic perspective.The aim of the work was to define an environmentally-efficient waste management system, to analyse the potential that exists in waste management and to draw up guidelines for optimal waste management.The method consisted of a literature study, two visits to construction sites and four interviews.An environmentally-efficient waste management system means that the waste is managed in the following order of priority:

    1. Prevention     
    2. Reuse  
    3. Recycling     
    4. Energy recovery
    5. Landfill     

    The prevention of waste is an important area that has not been adequately explored by the building and construction industry. The quantities of waste could decrease with the implementation of measures such as ordering materials in the dimensions required, prefabricated components, logistics centres with Just-In-Time deliveries, less and improved packaging and less wrapping. The reuse of waste materials and temporary apparatus as well as the use of a return pallet system are examples of reuse that reduces the quantities of waste.

    In most cases the source sorting work is a matter of course and the proportion going to landfill is down at a low level. The source sorting can be optimised by sorting all materials that can be reused and recycled to use them as a resource. The client of a project has great opportunities to influence the waste management in a sustainable direction by placing demands on the contractor. Demands can be placed on measures to reduce the quantities of waste, on a specific level of source sorting and on the reporting and monitoring of statistics.

    Fulltekst (pdf)
    Avfallshantering på byggarbetsplatser
  • 58.
    Khan, Zarrar
    et al.
    Pacific Northwest Natl Lab PNNL, Joint Global Change Res Inst JGCRI, College Pk, MD 20740 USA..
    Abraham, Edo
    Delft Univ Technol, Dept Water Resources Management, Delft, Netherlands..
    Aggarwal, Srijan
    Univ Alaska Fairbanks, Coll Engn & Mines, Fairbanks, AK USA..
    Khan, Manal Ahmad
    Natl Geog Partners, Washington, DC USA..
    Arguello, Ricardo
    Unidad Planificac Rural Agr UPRA, Bogota, Colombia..
    Babbar-Sebens, Meghna
    Oregon State Univ, Sch Civil & Construct Engn, Coll Engn, Corvallis, OR 97331 USA..
    Bereslawski, Julia Lacal
    Banco Interamer Desarrollo, Buenos Aires, DF, Argentina..
    Bielicki, Jeffrey M.
    Ohio State Univ, Dept Civil Environm & Geodet Engn, Columbus, OH 43210 USA.;Ohio State Univ, John Glenn Coll Publ Affairs, Columbus, OH 43210 USA..
    Campana, Pietro Elia
    Mälardalens universitet, Akademin för ekonomi, samhälle och teknik, Framtidens energi.
    Carrazzone, Maria Eugenia Silva
    FAO, Rome, Italy..
    Emerging Themes and Future Directions of Multi-Sector Nexus Research and Implementation2022Inngår i: Frontiers in Environmental Science, E-ISSN 2296-665X, Vol. 10, artikkel-id 918085Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Water, energy, and food are all essential components of human societies. Collectively, their respective resource systems are interconnected in what is called the "nexus". There is growing consensus that a holistic understanding of the interdependencies and trade-offs between these sectors and other related systems is critical to solving many of the global challenges they present. While nexus research has grown exponentially since 2011, there is no unified, overarching approach, and the implementation of concepts remains hampered by the lack of clear case studies. Here, we present the results of a collaborative thought exercise involving 75 scientists and summarize them into 10 key recommendations covering: the most critical nexus issues of today, emerging themes, and where future efforts should be directed. We conclude that a nexus community of practice to promote open communication among researchers, to maintain and share standardized datasets, and to develop applied case studies will facilitate transparent comparisons of models and encourage the adoption of nexus approaches in practice.

  • 59.
    Khokhotva, O. P.
    et al.
    National Technical University of Ukraine, Kiev, Ukraine.
    Westholm, Lena Johansson
    Mälardalens högskola, Akademin för ekonomi, samhälle och teknik, Framtidens energi.
    The impact of surface properties of modified pine bark on the mechanism of sorption of heavy metals from aqueous media2017Inngår i: Journal of Water Chemistry and Technology, ISSN 1063-455X, Vol. 39, nr 3, s. 148-154Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The surface properties of pine bark before and after the treatment with urea solution and the adsorption of Cu(II), Ni(II) and Zn(II) from aqueous solutions at different pH values have been studied. Types of active sorption sites, their surface concentration and change after the bark treatment with urea solution were determined. The results of potentiometric titration were processed by using ProtoFit and FITEQL software programs. The data obtained make it possible to conclude that in the extraction mechanism of heavy metals from water the share of ion exchange decreases and the share of complexation increases. The impact of alkaline and alkaline earth metals in the range of their concentrations up to 3000 mg/dm3 on Cu(II) extraction from model aqueous solutions was also investigated. 

  • 60.
    Khokhotva, Oleksandr
    et al.
    Mälardalens högskola, Akademin för hållbar samhälls- och teknikutveckling.
    Waara, Sylvia
    Mälardalens högskola, Akademin för hållbar samhälls- och teknikutveckling.
    Urea treated pine bark -a low cost sorbent with improved metal sorption characteristics2009Inngår i: Ogolnopolska Konferencja naukowa inzynieria ekologiczna / [ed] Hanna Obarska Pempkowiak, Gdansk: Polish Academy of Science , 2009, s. 188-198Konferansepaper (Annet vitenskapelig)
  • 61.
    Kjelleros, Fredrik
    Mälardalens högskola, Akademin för ekonomi, samhälle och teknik.
    Tjärsandsindustrins miljöpåverkan: Alberta, Kanada2015Independent thesis Basic level (degree of Bachelor), 10 poäng / 15 hpOppgave
    Abstract [en]

    In Alberta, Canada, amongst its mixture of sand, clay, water and other minerals, the tar sand’s heavy and viscous component bitumen, a thick, sticky form of crude oil is extracted through two methods; open-pit mining for shallower deposits (<75 m), and in situ for deeper deposits (>75 m). This degree project consists of a comparison between these two extraction methods impact on air, nature and water, which all have been evaluated by reviewing and analyzing literature. Studies showed that in situ methods cause a higher impact on air than open-pit mining, through higher emissions of greenhouse gases and sulfur dioxide (SO2), and will surpass the carbon dioxide (CO2) emissions caused by the open-pit mines when the shallower, more accessible tar sands dwindle. Open-pit mining causes a higher impact on water due to its large tailing ponds that causes leakage of processing water and fine tailings, polyaromatic hydrocarbons (PAH: s) and these 13 following elements considered priority pollutants (PPE) by the US Environmental Protection Agency (EPA); antimony (Sb), arsenic (As), beryllium (Be), lead (Pb), cadmium (Cd), copper (Cu), chromium (Cr), mercury (Hg), nickel (Ni), selenium (Se), silver (Ag), thallium (Tl) and zinc (Zn). However studies remain unclear whether or not in situ methods are worse due to underground tailing ponds. Finally, when it comes to nature, open-pit mining causes a more direct environmental impact through deforestation, drainage of peat and wetland, and blasting of rock. In situ methods however, seem to cause more of a long term environmental impact through fragmentation. Dividing the landscape into smaller units through roads, wells, pipelines and seismic lines, leads to domestic biodiversity and homogenization of flora and fauna as unfavorable conditions is created for the nature’s wildlife. In conclusion, in situ methods causes a bigger impact on air than open-pit mining, while open-pit mining causes a bigger impact on water. Due to lack of time and resources, more research about the direct impact on nature is needed to fully evaluate which of the two extraction methods causes the least environmental impact.

    Fulltekst (pdf)
    Tjärsandsindustrins miljöpåverkan
  • 62.
    Koskinen, Sonja
    Mälardalens högskola, Akademin för ekonomi, samhälle och teknik.
    Affärsutveckling ur ett psykosocialt perspektiv: Mälarhamnar AB:s förutsättningar att lyckas2014Independent thesis Basic level (degree of Bachelor), 10 poäng / 15 hpOppgave
    Abstract [en]

    The psychosocial work environment in hard professions is hardly studied and this study was implemented to observe port workers psychosocial work environment in ports of Västerås and Köping. There are two purposes with this study: firstly, to examine how ports of Västerås and Köping, Mälarhamnar AB, can improve and develop their business by using psychosocial methods. To do this, a questionnaire study and three interviews with workers were done and the results were used in a SWOT- analysis. Secondly, the aim is to be able to use the results and make a difference in the business development by adjusting the psychosocial work environment. The results show that the employees are happy at work and are happy with their work colleagues. The feeling of demand and control is higher for officials than for dockers. The feeling of being involved in decision making varies from interviews and survey. The interviews show that dockers are involved in decision making, while the survey shows low involvement. Generally the employees have good relationship to the immediate supervisor. To improve the business development Mälarhamnar AB need to identify which factors motivate their employees and which factors they use to motivate their employees. They also have to focus on the communication from foremen to employees and the communication should include feedback and recognition for well performed work.

    Fulltekst (pdf)
    Sonja Koskinen examensarbete
  • 63.
    Krustok, Ivo
    et al.
    Mälardalens högskola, Akademin för ekonomi, samhälle och teknik, Framtidens energi.
    Diaz, J G
    Faculty of Science, Universidad Autónoma de Madrid, Ciudad Universitaria de Cantoblanco, Madrid, Spain.
    Odlare, Monica
    Mälardalens högskola, Akademin för ekonomi, samhälle och teknik, Framtidens energi.
    Nehrenheim, Emma
    Mälardalens högskola, Akademin för ekonomi, samhälle och teknik, Framtidens energi.
    Algae biomass cultivation in nitrogen rich biogas digestate.2015Inngår i: Water Science and Technology, ISSN 0273-1223, E-ISSN 1996-9732, Vol. 72, nr 10, s. 1723-1729Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Because microalgae are known for quick biomass growth and nutrient uptake, there has been much interest in their use in research on wastewater treatment methods. While many studies have concentrated on the algal treatment of wastewaters with low to medium ammonium concentrations, there are several liquid waste streams with high ammonium concentrations that microalgae could potentially treat. The aim of this paper was to test ammonium tolerance of the indigenous algae community of Lake Malaren and to use this mixed consortia of algae to remove nutrients from biogas digestate. Algae from Lake Malaren were cultivated in Jaworski's Medium containing a range of ammonium concentrations and the resulting algal growth was determined. The algae were able to grow at NH4-N concentrations of up to 200 mg L(-1) after which there was significant inhibition. To test the effectiveness of the lake water algae on the treatment of biogas digestate, different pre-cultivation set-ups and biogas digestate concentrations were tested. It was determined that mixing pre-cultivated suspension algae with 25% of biogas digestate by volume, resulting in an ammonium concentration of around 300 mg L(-1), produced the highest algal growth. The algae were effective in removing 72.8 ± 2.2% of NH4-N and 41.4 ± 41.4% of PO4-P.

  • 64.
    Krustok, Ivo
    et al.
    Mälardalens högskola, Akademin för ekonomi, samhälle och teknik, Framtidens energi.
    Diaz, Juan Guillermo
    Mälardalens högskola, Akademin för ekonomi, samhälle och teknik, Framtidens energi.
    Shabiimam, MA
    Indian Institute of Technology, Bombay, India.
    ALGAE BIOMASS CULTIVATION WITH AMMONIUM RICH WASTEWATERS AS SUBSTRATE: THE POTENTIAL FOR SIMULTANEOUS WASTEWATER TREATMENT AND ENERGY RECOVERY2014Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Ammonia rich wastewaters pose risk to recipient waters and the atmosphere, and can be difficult to treat in wastewater treatment plants (WTTP) due to toxicity to the microbes in conventional biological treatment systems. This article presents an idea on how to use a combination of bacteria and microalgae for efficient treatment of wastewaters with high ammonia concentrations (200-1400 mg/L). The challenge in this research is that most algae species are sensitive to high ammonia concentrations (>1 mM)(Abalde and Mezzamo, 2009). Despite the numerous wastewaters that contain high ammonia concentrations, i.e. landfill leachate, piggery manure, reject water and biogas digestate, the progress in finding sustainable treatment methods is taking time. This despite the fact that climate change, eutrophication and eco-toxicity is negatively affected by this commonly occurring component. Further, nitrogen is a valuable nutrient that in conventional WWTP is just released into the air without any recycling or recovery.

    In this article, we present a study where algae were cultivated as a mean for treatment of wastewater reject water and swine manure from a piggery farm. The algae inoculum was pretreated from lake water, sampled in mid Sweden during summer algae blooms. Lake Mälaren is a shallow lake with a rich algae consortia, optimized for the local climate. During seasonal algae blooms, the lake demonstrates the extremely rapid growth rate of the algae such as cyanobacteria, green algae and diatoms. Algae inoculum, wastewater substrate and dilution media (tap water) were mixed in various ranges of ammonium concentrations to evaluate the nutrient removal and algae biomass growth. During the algae cultivation experiment, chlorophyll, optical density and TS were used as indicators for algae biomass growth. Flow Injection System (FIA) was used for nutrient analysis.

    The two main findings in this research are that algae growth is inhibited by ammonia but that it is possible to grow algae in readily high ammonia concentrations. Moreover, significant amount of ammonium were removed by algae during the cultivation in the reactors.

  • 65.
    Kurdve, Martin
    et al.
    Mälardalens högskola, Akademin för innovation, design och teknik.
    Romvall, Karin
    Mälardalens högskola, Akademin för innovation, design och teknik.
    Bellgran, Monica
    Mälardalens högskola, Akademin för innovation, design och teknik.
    Torstensson, Emma
    A systematic approach for identifying lean and green improvements related to packaging material in assembly2011Inngår i: Proceedings of the Swedish Production Symposium 2011, 2011Konferansepaper (Fagfellevurdert)
    Abstract [en]

    One significant environmental impact from assembly operations includes packaging material use and subsequent waste generation. Although current practice involves reduction of unnecessary materials handling, there is potential to adapt packaging material in order to simultaneously improve the environmental performance and reduce cost in a “lean and green” mindset. Hence, with increased emphasis on sustainable and efficient production systems, there is a growing need for analysis and decision support tools to be used by operators and engineers as well as management. This paper approaches the gap by presenting an industrial application in the form of a set of simplistic analysis methods, as a systematic approach for identifying lean and green improvement potentials for packaging material in assembly. The methodology uses the advantages of eco-mapping, waste sorting analysis and material handling analysis and combines them with the systematic prioritisation of the five-step waste hierarchy and Bill of Material (BOM) structure. A pilot test indicates that a systematic use of these tools can be an efficient decision support for implementing focused improvements, providing cost reductions, productivity improvements and resource savings. Hence, the methodology adds to the general assembly optimisation toolbox, providing rapid answers for packaging decisions, including materials usage, handling and disposal processes.

  • 66.
    Liljeberg, Cecilia
    Mälardalens universitet, Akademin för ekonomi, samhälle och teknik.
    Optimizing CO2 supply for plant growth in vertical farming: Modelling photosynthetic response to CO2 fertilization to support sustainable food production using air carbon capture – a framework2023Independent thesis Advanced level (degree of Master (Two Years)), 20 poäng / 30 hpOppgave
    Abstract [en]

    The world’s population is growing and global food production is projected to need to double by 2050. Climate change brings challenges to agriculture due to unpredictable precipitation patterns and rising temperatures. At the same time, carbon dioxide (CO2) and other greenhouse gases continue to rise and increase global warming. Vertical farming can help support mitigation of the growing need for food and combined with capturing CO2 from the air to fertilize the plants, the climate is also positively influenced. This degree project investigated the effect of CO2 concentration on leaf net photosynthetic rate for selected plant species and assessed feasibility to build a model to predict the leaf net photosynthetic rate. A model based on an artificial neural network (ANN) was developed to predict the net photosynthetic rate based on a number of factors including CO2 concentration from a set of data on woody species. The photosynthetic response is expected to differ with the species, which is consistent with the results where a model based on a single species performed well with a high prediction accuracy. It was however also possible to develop an ANN model across all the species, as well as within a site, a family of species or a continent, albeit with a lower prediction accuracy than the model for a single species. The models can be updated to apply to vertical farming context and such models, especially cross-species, can be used to predict the net photosynthetic rate instead of measuring it using a photosynthesis system, which is a time-consuming process and requires special equipment.

  • 67.
    Marchand, Charlotte
    et al.
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM).
    Hogland, William
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM).
    Kaczala, Fabio
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM).
    Jani, Yahya
    Mälardalens universitet, Akademin för ekonomi, samhälle och teknik, Framtidens energi. Linnéuniversitetet, Institutionen för biologi och miljö (BOM), Sweden.
    Marchand, Lilian
    INRA, France.
    Augustsson, Anna
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM).
    Hijri, Mohamed
    Université de Montréal, Canada.
    Effect of Medicago sativa L. and compost on organic and inorganic pollutant removal from a mixed contaminated soil and risk assessment using ecotoxicological tests2016Inngår i: International journal of phytoremediation, ISSN 1522-6514, E-ISSN 1549-7879, Vol. 18, nr 11, s. 1136-1147Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Several Gentle Remediation Options (GRO), e.g. plant-based options (phytoremediation), singly and combined with soil amendments, can be simultaneously efficient for degrading organic pollutants and either stabilizing or extracting trace elements (TE). Here, a 5-month greenhouse trial was performed to test the efficiency of Medicago sativa L., singly and combined with a compost addition (30% w/w), to treat soils contaminated by petroleum hydrocarbons (PHC), Co and Pb collected at an auto scrap yard. After five months, total soil Pb significantly decreased in the compost-amended soil planted with M. sativa, but not total soil Co. Compost incorporation into the soil promoted PHC degradation, M. sativa growth and survival, and shoot Pb concentrations (3.8 mg/kg DW). Residual risk assessment after the phytoremediation trial showed a positive effect of compost amendment on plant growth and earthworm development. The O2 uptake by soil microorganisms was lower in the compost-amended soil, suggesting a decrease in microbial activity. This study underlined the benefits of the phytoremediation option based on M. sativa cultivation and compost amendment for remediating PHC and Pb contaminated soils.

  • 68.
    Marchand, Charlotte
    et al.
    Universite de Montreal, Canada.
    Jani, Yahya
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM), Sweden.
    Kaczala, Fabio
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM).
    Hijri, Mohammed
    Universite de Montreal, Canada.
    Hogland, William
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM).
    Physicochemical and Ecotoxicological Characterization of Petroleum Hydrocarbons and Trace Elements Contaminated Soil2020Inngår i: Polycyclic aromatic compounds (Print), ISSN 1040-6638, E-ISSN 1563-5333, Vol. 40, nr 4, s. 967-978Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Underground storage tanks used for auto oil spill waste contain many hazardous materials, including polycyclic aromatic hydrocarbons (PAHs) trace elements. These compounds pose a significant threat to the environment and affect negatively human health. The aim of this study was to characterize the soil of a former auto scrap yards in which oil spill tank leakage occurred in Sweden. The soil samples were collected from an area of 5 m2 around an oil the tank which was highly contaminated with petroleum hydrocarbons (PHC) and trace elements (cobalt and lead). Another soil samples were collected from a nearby area that was not contaminated by PHC and they were considered as controls. The characterization of these soil samples was performed using two approaches. Analysis of the relevant physico-chemical soil properties included texture, organic matter, contaminant concentration and pH, while biological analyses were performed using three independent ecotoxicological tests with plant (Lepidium sativum), earthworm (Eisenia fetida) and soil microorganisms. Toxicity tests showed that contaminants had strongly negative effects on earthworm’s development and L. sativum shoots dry biomass in both PHC contaminated and control soils. These two parameters were the most sensitive in reflecting toxicity of study soils. Oxygen uptake rate (OUR) in aqueous phase was four times higher than that of the solid phase even though a similar trend was observed in both phases (aqueous and solid). Moreover, microorganism’s respiration was high in PHC contaminated soils in comparison to control soils due to the mineralization of readily available OM and/or organic pollutants as well as the inhibitory effect of TE on soil respiration. The results clearly demonstrated that combination of chemical analyses with three toxicity tests was appropriate to characterize mixed PHC and TE contaminated soils.

  • 69.
    Marchand, Charlotte
    et al.
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM).
    Mench, Michel
    Univ Bordeaux, France.
    Jani, Yahya
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM), Sweden.
    Kaczala, Fabio
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM).
    Notini, Peter
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM).
    Hijri, Mohamed
    Univ Montreal, Canada.
    Hogland, William
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM).
    Pilot scale aided-phytoremediation of a co-contaminated soil2018Inngår i: Science of the Total Environment, ISSN 0048-9697, E-ISSN 1879-1026, Vol. 618, s. 753-764Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    A pilot scale experiment was conducted to investigate the aided-phytoextraction of metals and the aided-phytodegradation of petroleum hydrocarbons (PHC) in a co-contaminated soil. First, this soil was amended with compost (10% w/w) and assembled into piles (Unp-10%C). Then, a phyto-cap of Medicago sativa L. either in monoculture (MS-10%C) or co-cropped with Helianthus annuus L. as companion planting (MSHA-10%C) was sown on the topsoil. Physico-chemical parameters and contaminants in the soil and its leachates were measured at the beginning and the end of the first growth season (after five months). In parallel, residual soil ecotoxicity was assessed using the plant species Lepidium sativum L. and the earthworm Eisenia fetida Savigny, 1826, while the leachate ecotoxicity was assessed using Lemna minor L. After 5 months, PH C10-C40, PAH-L, PAH-M PAH-H, Pb and Cu concentrations in the MS-10%C soil were significantly reduced as compared to the Unp-10% C soil. Metal uptake by alfalfa was low but their translocation to shoots was high for Mn, Cr, Co and Zn (transfer factor (TF) >1), except for Cu and Pb. Alfalfa in monoculture reduced electrical conductivity, total organic C and Cu concentration in the leachate while pH and dissolved oxygen increased. Alfalfa co-planting with sunflower did not affect the extraction of inorganic contaminants from the soil, the PAH (M and H) degradation and was less efficient for PH C10-C40 and PAH-L as compared to alfalfa monoculture. The co-planting reduced shoot and root Pb concentrations. The residual soil ecotoxicity after 5 months showed a positive effect of co-planting on L. sativum shoot dry weight (DW) yield. However, high contaminant concentrations in soil and leachate still inhibited the L. sativum root DW yield, earthworm development, and L. minor growth rate. 

  • 70.
    Marchand, Charlotte
    et al.
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM).
    Mohamed, Hijri
    Université de Montréal, Canada.
    Jani, Yahya
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM), Sweden.
    Kaczala, Fabio
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM).
    Hogland, William
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM).
    Long-term phytoremediation of petroleum hydrocarbons and metals contaminated soilManuskript (preprint) (Annet vitenskapelig)
  • 71.
    Marchand, Charlotte
    et al.
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM).
    Mohamed, Hijri
    Université de Montréal, Canada.
    Jani, Yahya
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM), Sweden.
    Kaczala, Fabio
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM).
    Mench, Michel
    Univ Bordeaux, France.
    Notini, Peter
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM).
    Hogland, William
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM).
    Pilot scale ecopiling of petroleum hydrocarbons and metals contaminated soilManuskript (preprint) (Annet vitenskapelig)
  • 72.
    Mutafela, Richard
    et al.
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM).
    Jani, Yahya
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM), Sweden.
    Hogland, William
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM).
    Circular Economy Perspectives in Managing Old Contaminated Glass Dumps2018Inngår i: 11th International Conference on the Establishment of Cooperation among Companies and Institutions in the Nordic Countries, the Baltic Sea Region and the World, Kalmar, Sweden, November 19-21, 2018: Book of Abstracts, Kalmar, Växjö: Linnaeus university , 2018, s. 149-Konferansepaper (Annet vitenskapelig)
    Abstract [en]

    Landfills and dumpsites have been the ultimate end of life sinks for various materials and products. As such, they are considered rich stocks of secondary raw materials for the circular economy. However, most of them are non-sanitary as they lack protective measures against environmental contamination. Over the years, the need to exploit the resource potential of landfills as well as to mitigate their contamination problems, among other factors, has led to the concept of landfill mining, resulting in a number of mainly pilot scale mining of landfills and dumps globally. In southeastern Sweden for instance, where there are over forty old, contaminated glass dumps, a number of remedial dumpsite excavations have been going on, with eventual landfilling of excavated materials in sanitary landfills. Hence, based on the Swedish situation, this study presents three scenarios about: contaminated materials in non-sanitary dumps as they currently stand; ongoing material excavations with subsequent landfilling; and material excavations coupled with materials recovery towards reduced landfilling. The third scenario is presented as more suitable from the circular economy perspective. The scenario is thus discussed in terms of technological implications of the process from identification of concealed valuable materials in dumps to their excavation, sorting, temporal storage, valorization and eventual resource recovery. In addition, legal implications as well as potential social, economic and environmental barriers against the scenario’s implementation are discussed. Finally, the study provides recommendations that would be useful in decision making surrounding the management of contaminated and non-sanitary dumpsites.

  • 73.
    Mutafela, Richard
    et al.
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM).
    Jani, Yahya
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM), Sweden.
    Kaczala, Fabio
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM).
    Burlakovs, Juris
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM).
    Kihl, Anders
    Ragn Sells AB.
    Hogland, William
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM).
    Characterization of Waste from Glassworks towards Resource Recovery - the Case of Madesjö Dumpsite2016Inngår i: Linnaeus Eco-Tech 2016, 21-23 November 2016, Kalmar, Sweden: Book of Abstracts, The 10th International Conference on Establishment of Cooperation between Companies and Institutions in the Nordic Countries, the Baltic Sea Region and the World. / [ed] Stina Alriksson, Jelena Lundström, William Hogland, Linnaeus University , 2016, s. 159-159Konferansepaper (Annet vitenskapelig)
    Abstract [en]

    The ‘Glasriket’ of Sweden’s Småland region is characterized by an array of landfillsand dumpsites of glass and other raw material wastes from old glassworks. Most ofthe dumpsites contain heavy metals with leaching capabilities to soil and groundwater. As these metals could be potential resources that could be recovered into theresource loop, the characterization of these wastes can provide necessary informationabout the resource recovery potential. The current investigation focuses on the firststages by quantifying the amounts of selected metals (Ba, Cr and Zn) in the glassdeposit at Madesjö dumpsite as a case. The dump was sampled at nine different pointsand two levels per point. The samples were subjected to X-ray Fluorescence scanning(XRF) and leaching tests with further analyses of metals using ICP. According to theinvestigation, the highest metal contents in the solid phase were observed in Zn(average of 4515 mg/kg) while the lowest were observed in Cr (average of 72 mg/kg).In the liquid phase, the average metal concentrations were observed to be 0.37 mg/kg,0.02 mg/kg and 0.23 mg/kg for Ba, Cr and Zn respectively. These, however, are not inreadily available form, and so further investigations need to be done in order to findcost-effective techniques for their extraction. On the other hand, further investigationsneed to be done to ascertain the leaching potential by altering such leachingparameters as contact time and liquid to solid ratio.

  • 74.
    Mutafela, Richard
    et al.
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM).
    Kaczala, Fabio
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM).
    Jani, Yahya
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM), Sweden.
    Aid, Graham
    Ragn-Sells AB, Sweden.
    Hogland, William
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM).
    Methods for investigation of old glass waste dumpsites2018Inngår i: Proceedings of the 4th International Symposium On Enhanced Landfill Mining: 5-6 February 2018, Mechelen, Belgium / [ed] Peter Tom Jones & Lieven Machiels, Leuven, Belgium: European Enhanced Landfill Mining Consortium (EURELCO) , 2018, s. 145-150Konferansepaper (Fagfellevurdert)
    Abstract [en]

    An old glass dumpsite in southern Sweden was mapped and investigated to locate

    glass abundance zones (“hotspots”) and understand physicochemical parametres of

    the waste. Global Positioning System (GPS) was used for mapping the site while a

    geophysical method of Electrical Resistivity was used for detecting glass hotspots in

    the dump. Test pits were excavated and samples taken, after which hand sorting,

    sieving and X-Ray Fluorescence (XRF) scanning of the waste were used for

    physicochemical properties. Geophysical mapping was found to be a feasible nondestructive

    tool in locating glass hotspots. In terms of composition, glass was found

    to be the most abundant fraction at 90% average from all 4 sampling points. From

    particle size distribution, particles > 11.3 mm were more abundant (75% average)

    than particles < 11.3 mm. XRF scanning yielded As, Cd and Pb concentrations of 3,700

    mg/kg, 500 mg/kg and 5,300 mg/kg, respectively. In conclusion, it is possible to locate

    glass hotspots and excavate them carefully in readiness for metal extraction while

    avoiding the need for complicated sorting post-excavation.

    Fulltekst (pdf)
    FULLTEXT01
  • 75.
    Mutafela, Richard
    et al.
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM).
    Marques, Marcia
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM).
    Jani, Yahya
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM), Sweden.
    Kriipsalu, Mait
    Estonian University of Life Sciences, Estonia.
    Hogland, William
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM).
    Physico-chemical characteristics of fine fraction materials from an old crystal glass dumpsite in Sweden2019Inngår i: Chemistry in ecology, ISSN 0275-7540, E-ISSN 1029-0370, Vol. 35, nr 8, s. 877-890Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Physico-chemical characteristics of waste, particularly fine fraction (FF), from an old crystal glass waste dump in Sweden were studied to assess recycling or disposal alternatives. Hand-sorting of the waste indicated glass content of 44.1% while sieving established the FF as a more soil-like mix of glass and other materials constituting 33.3% of all excavated waste. The FF was around neutral pH with 24.4% moisture content, low values of Total Dissolved Solids, Dissolved Organic Carbon and fluorides, but hazardous concentrations of As, Cd, Pb and Zn according to the Swedish Environmental Protection Agency guidelines. While the FF leached metals in low concentrations at neutral pH, it leached considerably during digestion with nitric acid, implying leaching risks at low pH. Thus, the waste requires safe storage in hazardous waste class ‘bank account’ storage cells to avoid environmental contamination as metal recovery and other recycling strategies for the glass waste are being developed. The study could fill the information gap regarding preservation of potential resources in the on-going, fast-paced excavation and re-landfilling of heavy metal contaminated materials in the region.

  • 76.
    Mutafela, Richard N.
    et al.
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM).
    Mantero, Juan
    University of Gothenburg, Sweden;University of Seville, Spain.
    Jani, Yahya
    Mälardalens universitet, Akademin för ekonomi, samhälle och teknik, Framtidens energi. Linnéuniversitetet, Institutionen för biologi och miljö (BOM), Sweden.
    Thomas, Rimon
    University of Gothenburg, Sweden.
    Holm, Elis
    University of Gothenburg, Sweden.
    Hogland, William
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM), Sweden.
    Radiometrical and physico-chemical characterisation of contaminated glass waste from a glass dump in Sweden2020Inngår i: Chemosphere, ISSN 0045-6535, E-ISSN 1879-1298, Vol. 241, s. 1-10, artikkel-id 124964Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Around former glass factories in south eastern Sweden, there are dozens of dumps whose radioactivity and physico-chemical properties were not investigated previously. Thus, radiometric and physico-chemical characteristics of waste at Madesjö glass dump were studied to evaluate pre-recycling storage requirements and potential radiological and environmental risks. The material was sieved, hand-sorted, leached and scanned with X-Ray Fluorescence (XRF). External dose rates and activity concentrations of Naturally Occurring Radioactive Materials from 238U, 232Th series and 40K were also measured coupled with a radiological risk assessment. Results showed that the waste was 95% glass and dominated by fine fractions (< 11.3 mm) at 43.6%. The fine fraction had pH 7.8, 2.6% moisture content, 123 mg kg-1 Total Dissolved Solids, 37.2 mg kg-1 Dissolved Organic Carbon and 10.5 mg kg-1 fluorides. Compared with Swedish EPA guidelines, the elements As, Cd, Pb and Zn were in hazardous concentrations while Pb leached more than the limits for inert and non-hazardous wastes. With 40K activity concentration up to 3000 Bq kg-1, enhanced external dose rates of 40K were established (0.20 mSv h-1) although no radiological risk was found since both External Hazard Index (Hex) and Gamma Index (Iγ) were < 1. The glass dump needs remediation and storage of the waste materials under a safe hazardous waste class ‘Bank Account’ storage cell as a secondary resource for potential future recycling.

  • 77.
    Mutafela, Richard
    et al.
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM).
    Ye, Fei
    KTH Royal instute of technology, Sweden.
    Jani, Yahya
    Malmö University, Sweden.
    Dutta, Joydeep
    KTH Royal instute of technology, Sweden;King Abdulaziz Univ, Saudi Arabia.
    Hogland, William
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM).
    Sustainable extraction of hazardous metals from crystal glass waste using biodegradable chelating agents2022Inngår i: Journal of Material Cycles and Waste Management, ISSN 1438-4957, E-ISSN 1611-8227, Vol. 24, nr 2Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Extraction of hazardous metals from dumped crystal glass waste was investigated for site decontamination and resource recovery. Mechanically activated glass waste was leached with biodegradable chelating agents of ethylenediamine-N,N'-disuccinic acid (EDDS) and nitrilotriacetic acid (NTA), where the concentration and reaction time were determined by using Box-Wilson experimental design. Hazardous metals of lead (Pb), arsenic (As), antimony (Sb) and cadmium (Cd) with concentrations higher than regulatory limits were extracted wherein the extraction yield was found to vary Pb > Sb > As > Cd. Extraction was influenced more by type and concentration of chelator rather than by reaction time. A maximum of 64% of Pb could be extracted by EDDS while 42% using NTA. It is found that increase of chelator concentrations from 0.05 M to 1 M did not show improved metal extraction and the extraction improved with reaction time until 13 h. This study provides sustainable alternative for treating hazardous glass waste by mechanical activation followed by extraction using biodegradable chelator, instead of acid leaching.

  • 78. Nehrenheim, Emma
    Introduction to Renewable Energy2013Inngår i: Reference Module in Earth Systems and Environmental Sciences, Elsevier, 2013Kapittel i bok, del av antologi (Annet vitenskapelig)
    Abstract [en]

    Renewable energy is distinguished from fossil energy, or non-renewables, by the time it takes to form. Renewable energy uses energy from the sun, winds, waves and other direct energies or forces. Also bio-fuels are considered as renewable, even though there is no balance between the production and e.g. incineration of the material. Compared to fossil fuels, formed from the degradation of prehistoric organic material, biomass formed in modern times at least releases no ancient carbon (as CO2) to the atmosphere. The renewable energy sector is rapidly becoming more feasible due to the increased threat to our planet of global warming caused by burning of fossil fuels.

  • 79.
    Nehrenheim, Emma
    et al.
    Mälardalens högskola, Akademin för hållbar samhälls- och teknikutveckling.
    Ribé, Veronica
    Mälardalens högskola, Akademin för ekonomi, samhälle och teknik.
    Carlsson, Peter
    Structor Miljöteknik.
    Eneroth, Peder
    Flexiclean.
    Odlare, Monica
    Mälardalens högskola, Akademin för hållbar samhälls- och teknikutveckling.
    Treatment of heavily contaminated storm water from an industrial site area by filtration through an adsorbent barrier with pine bark (Pinus Silvestris), polonite and active carbon in a comparison study2011Inngår i: Water and Industry, IWA Specialist conference, 1-5 May 2011, 2011Konferansepaper (Fagfellevurdert)
    Abstract [en]

    This study aims to evaluate a simple and robust filtration method for separation of of heavy metals from storm water. The storm water, collected at a metals manufacturing site, is heavily contaminated with heavy metals, A first analysis of a water sample collected from the site in mid Sweden showed exceptionally high concentrations of especially Zn, which was present in concentrations exceeding 200 mgL-1. The basic idea is to filter the water as it flows out of the industry area through a passive barrier in the storm water well pipeline. The advantages with using pine bark are many,  it is, for instance, a waste material that can be recycled into a new life cycle step and it has been shown to be a promising materia in previous studies l for capturing  heavy metal contaminants . Pine bark was in this study compared to two other materials; polonite and the conventional adsorbent active carbon. The forestry by-product pine bark (Pinus silvestris) consists of approximately 85-90 % dried and granulated pine bark and 10-15 % wood fibres. Polonite is a manufactured product originating from the cretaceous rock opoka. A laboratory  experiment was  set up, where  the storm water from the industrial site was filtered through all three filter materials in a pilot-scale model of the proposed installation. The filter cartridge model could be filled with approximately 2.2 L filter material. 3 L of the storm water was poured through the material through natural percolation, approximately 0.35 Lmin-1. Treated and untreated storm water was analyzed for heavy metals, suspended solids, electric conductivity and pH. Active carbon showed the highest level of adsorption, with nearly 100 % of all metals adsorbing to the filter. However, significant concentrations of As was desorbed from the material into the filtered water. Pine bark retained 90 % of the metals, even the Zn which was present in high concentrations. Polonite could only adsorb 70 % of the heavy metals and released Cr from the material.

    Fulltekst (pdf)
    fulltext
  • 80.
    Nilsson, My
    et al.
    Mälardalens högskola, Akademin för ekonomi, samhälle och teknik.
    Lindberg, Anna
    Mälardalens högskola, Akademin för ekonomi, samhälle och teknik.
    Förnybar energi från biogasproduktion genom algodlingar i deponilakvatten.: En studie av algodlingar i sju olika deponilakvatten.2013Independent thesis Basic level (degree of Bachelor), 10 poäng / 15 hpOppgave
    Download (pdf)
    AlTox
  • 81.
    Nizami, A. S.
    et al.
    King Abdulaziz Univ, CEES, Jeddah, Saudi Arabia.
    Rehan, M.
    King Abdulaziz Univ, CEES, Jeddah, Saudi Arabia.
    Waqas, M.
    King Abdulaziz Univ, CEES, Jeddah, Saudi Arabia.
    Naqvi, Muhammad
    Mälardalens högskola, Akademin för ekonomi, samhälle och teknik, Framtidens energi.
    Ouda, O. K. M.
    Prince Mohamed Bin Fahd Univ, Al Khobar, Saudi Arabia.
    Shahzad, K.
    King Abdulaziz Univ, CEES, Jeddah, Saudi Arabia.
    Miandad, R.
    King Abdulaziz Univ, CEES, Jeddah, Saudi Arabia.
    Khan, M. Z.
    Aligarh Muslim Univ, Uttar Pradesh, India.
    Syamsiro, M.
    Janabadra Univ, Indonesia.
    Ismail, I. M. I.
    King Abdulaziz Univ, CEES, Jeddah, Saudi Arabia.
    Pant, Deepak
    Flemish Inst Technol Res VITO, Mol, Belgium.
    Waste biorefineries: Enabling circular economies in developing countries2017Inngår i: Bioresource Technology, ISSN 0960-8524, E-ISSN 1873-2976, Vol. 241, s. 1101-1117Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    This paper aims to examine the potential of waste biorefineries in developing countries as a solution to current waste disposal problems and as facilities to produce fuels, power, heat, and value-added products. The waste in developing countries represents a significant source of biomass, recycled materials, chemicals, energy, and revenue if wisely managed and used as a potential feedstock in various biorefinery technologies such as fermentation, anaerobic digestion (AD), pyrolysis, incineration, and gasification. However, the selection or integration of biorefinery technologies in any developing country should be based on its waste characterization. Waste biorefineries if developed in developing countries could provide energy generation, land savings, new businesses and consequent job creation, savings of landfills costs, GHG emissions reduction, and savings of natural resources of land, soil, and groundwater. The challenges in route to successful implementation of biorefinery concept in the developing countries are also presented using life cycle assessment (LCA) studies.

  • 82.
    Nookuea, Worrada
    et al.
    Mälardalens högskola, Akademin för ekonomi, samhälle och teknik, Framtidens energi.
    Tan, Yuting
    Royal Inst Technol, Stockholm, Sweden.
    Li, Hailong
    Mälardalens högskola, Akademin för ekonomi, samhälle och teknik, Framtidens energi.
    Thorin, Eva
    Mälardalens högskola, Akademin för ekonomi, samhälle och teknik, Framtidens energi.
    Yan, Jinyue
    Mälardalens högskola, Akademin för ekonomi, samhälle och teknik, Framtidens energi.
    Sensitivity study of thermo-physical properties of gas phase on absorber design for CO2 capture using monoethanolamine2015Inngår i: Energy Procedia, ISSN 1876-6102, Vol. 75, s. 2305-2310Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Absorption of CO2 with aqueous amines in post-combustion capture is characterized as mass transfer process with chemical reaction. Hydrodynamics and mass transfer in gas and liquid phases in a packed column have significant influences on absorber design especially for the design of packing height. In this paper, the sensitivity study has been conducted to investigate the impacts of gas phase density, viscosity and diffusivity on the hydrodynamics and mass transfer and further the total packing height of a countercurrent flow with random packing column, using reactive absorption process and integral rate-based models. Results show that density and diffusivity have opposite effect to viscosity. Amongst various properties, diffusivity has the most significant effect on the packing height compared to density and viscosity. Overestimation of diffusivity of 5% may result in decrease of 3.2% of packing height. Moreover, developing more accurate diffusivity model should be prioritized for more accurate absorber design. 

  • 83.
    Odlare, Monica
    et al.
    Mälardalens högskola, Akademin för ekonomi, samhälle och teknik, Framtidens energi.
    Lindmark, Johan
    Mälardalens högskola, Akademin för ekonomi, samhälle och teknik, Framtidens energi.
    Ericsson, Anders
    Brunnby Farm, HS Konsult, Västerås, Sweden.
    Pell, Mikael
    Swedish Univ Agr Sc, Uppsala, Sweden.
    Use of organic wastes in agriculture2015Inngår i: Energy Procedia, ISSN 1876-6102, s. 2472-2476Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    As the number of biogas plants and wastewater treatment plants continues to grow, there is an urgent need to find sustainable usage of the organic wastes produced in these facilities Recycling of organic wastes within agriculture can reduce the need for mineral fertilizer and restore organic carbon deficiency in the soil. The results from a 16-year long field experiment, where agricultural lands have been amended using sewage sludge and biogas residue is presented in this paper. Plant nutrients, organic contaminants and metals have been analyzed in order to evaluate the impact of the wastes on soil and crop quality. The results show that only small differences in plant uptake of metals and organic pollutants appear after 16 years. In addition, biogas residues performed well as a fertilizers, although not as well as mineral fertilizers.

  • 84.
    Odlare, Monica
    et al.
    Mälardalens högskola, Akademin för hållbar samhälls- och teknikutveckling.
    Nehrenheim, Emma
    Mälardalens högskola, Akademin för hållbar samhälls- och teknikutveckling.
    Microbiological degradation of explosives in bioreactor2007Konferansepaper (Fagfellevurdert)
  • 85.
    Odlare, Monica
    et al.
    Mälardalens högskola, Akademin för hållbar samhälls- och teknikutveckling.
    Nehrenheim, Emma
    Mälardalens högskola, Akademin för hållbar samhälls- och teknikutveckling.
    Microbiological degradation of explosives in bioreactor2006Konferansepaper (Fagfellevurdert)
  • 86.
    Olsson, A.
    et al.
    KTH Royal Institute of Technology, Stockholm, Sweden .
    Grönkvist, S.
    KTH Royal Institute of Technology, Stockholm, Sweden .
    Lind, Mårten
    ZeroMission, Stockholm, Sweden.
    Yan, Jinyue
    Mälardalens högskola, Akademin för ekonomi, samhälle och teknik, Framtidens energi.
    The elephant in the room - A comparative study of uncertainties in carbon offsets2016Inngår i: Environmental Science and Policy, ISSN 1462-9011, E-ISSN 1873-6416, Vol. 56, s. 32-38Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The clean development mechanism (CDM) is a flexible mechanism under the Kyoto Protocol, which makes it possible for developed countries to offset their emissions of greenhouse gases through investing in climate change mitigation projects in developing countries. When the mitigation benefit of a CDM project is quantified, measurable uncertainties arise that can be minimised using established statistical methods. In addition, some unmeasurable uncertainties arise, such as the rebound effect of demand-side energy efficiency projects. Many project types related to land use, land-use change and forestry (LULUCF) have been excluded from the CDM in part because of the high degree of statistical uncertainty in measurements of the carbon sink and risk of non-permanence. However, recent discussions within the United Nations Framework Convention on Climate Change (UNFCCC) have opened up for the possibility of including more LULUCF activities in the future. In the light of this discussion, we highlight different aspects of uncertainties in LULUCF projects (e.g. the risk of non-permanence and the size of the carbon sink) in relation to other CDM project categories such as renewables and demand-side energy efficiency. We quantify the uncertainties, compare the magnitudes of the uncertainties in different project categories and conclude that uncertainties could be just as significant in CDM project categories such as renewables as in LULUCF projects. The CDM is a useful way of including and engaging developing countries in climate change mitigation and could be a good source of financial support for LULUCF mitigation activities. Given their enormous mitigation potential, we argue that additional LULUCF activities should be included in the CDM and other future climate policy instruments. Furthermore, we note that Nationally Appropriate Mitigation Actions (NAMAs) are currently being submitted to the UNFCCC by developing countries. Unfortunately, the under-representation of LULUCF in comparison to its potential is evident in the NAMAs submitted so far, just as it has been in the CDM. Capacity building under the CDM may influence NAMAs and there is a risk of transferring the view on uncertainties to NAMAs. 

  • 87.
    Olsson, Jesper
    et al.
    Mälardalens högskola, Akademin för ekonomi, samhälle och teknik, Framtidens energi.
    Schwede, Sebastian
    Mälardalens högskola, Akademin för ekonomi, samhälle och teknik, Framtidens energi.
    Nehrenheim, Emma
    Mälardalens högskola, Akademin för ekonomi, samhälle och teknik, Framtidens energi.
    Thorin, Eva
    Mälardalens högskola, Akademin för ekonomi, samhälle och teknik, Framtidens energi.
    Mesophilic and thermophilic co-digestion of microalgal-based activated sludge and primary sludgeManuskript (preprint) (Annet vitenskapelig)
  • 88.
    Ottosson, Therese
    Mälardalens universitet, Akademin för ekonomi, samhälle och teknik.
    Demand controlled ventilation: Impact on energy use and indoor environmental quality2023Independent thesis Advanced level (degree of Master (Two Years)), 20 poäng / 30 hpOppgave
    Abstract [en]

    European buildings account for a significant share of the energy-related emissions in Europe. Addressing the increasing energy use and its contribution to greenhouse gases (GHG) is internationally recognized as crucial, and emissions must be halted. Heating, ventilation, and air conditioning (HVAC) systems responds to a substantial share of the energy use in buildings. Demand controlled ventilation (DCV) is a technique designed to improve the energy efficiency. DCV operates by adjusting the air flow rates and settings of ventilation to the actual demand in buildings. DCV systems can be based on detected levels of i.e., relative humidity (RH), carbon dioxide (CO2), and volatile organic compounds (VOC) and it is valuable to understand what parameters that are most significant for the control. This study aimed to investigate how different control parameters and settings affected the energy use of ventilation and indoor environmental quality (IEQ). A case study was implemented in an educational building and monitoring was done during the operation of different cases. From the measured data, four different IEQ parameters, and energy use were evaluated. Energy usage was both calculated from energy equations in Excel and simulated in software called TRNSYS based on inputs of measured airflows. The results showed that using DCV instead of constant air volume (CAV) ventilation resulted in 10-65% energy use reductions. The majority of measured IEQ parameters occurred within the scope of good levels according to standards. Energy savings of 56% was achieved when conducting settings on wider temperature intervals, letting the temperature fluctuate between (20±3˚C), and the result indicated that it did not affect the IEQ negatively. Also, it was possible to reduce energy use by implementing VOC control instead of CO2. Some of the cases showed that RH conditions were positively affected when implementing DCV. It was also shown that the answers in the questionnaire survey did not always interact with the measured values. This indicates that the experienced IEQ does not necessarily represent the measured values and differences between individuals will have an impact as well.

    Fulltekst (pdf)
    fulltext
  • 89.
    Pehme, Kaur-Mikk
    et al.
    Estonian University of Life Sciences, Estonia.
    Burlakovs, Juris
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM).
    Kriipsalu, Mait
    Estonian University of Life Sciences, Estonia;University of Latvia, Latvia.
    Pilecka, Jovita
    Latvia University of Life Sciences and Technologies, Latvia.
    Grinfelde, Inga
    Latvia University of Life Sciences and Technologies, Latvia.
    Tamm, Toomas
    Estonian University of Life Sciences, Estonia.
    Jani, Yahya
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM), Sweden.
    Hogland, William
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM).
    Urban hydrology research fundamentals for waste management practices2019Inngår i: 25th Annual International Scientific Conference "Research for Rural Development 2019" 15 - 17 May, 2019, vol 1 / [ed] Treija, S; Skujeniece, S, Jelgava: Latvia University of Life Sciences and Technologies , 2019, s. 160-167Konferansepaper (Fagfellevurdert)
    Abstract [en]

    The urbanization and increasing growth of planet’s population accumulates significant volume of disposed waste

    as well as increases risks on human health and environmental safety. Landfill systems are the dynamic, living

    in space and time, potentially harmful entities that must be managed in as careful and smart way as possible.

    There are many studies related to landfill emissions such as leachates and methane. However, there is a need for

    advanced understanding of landfill hydrological regime and risks related to climate change and associated changes

    of hydrological cycle. The comprehensive studies about the urban hydrology are available; however, application

    to landfill management is fragmentary and inconsistent in several aspects. Landfill in long term has an impact on

    hydrological cycle. The heterogeneous land surface is one of aspects; however, there are still unanswered questions

    about the urban environment impact on water balance components. The aim of this study is to describe fundamentals

    of landfill hydrology in urban hydrological response unit context as well as evaluate the potential risks to environment

    and human health related to landfill geomorphology and hydrological balance in temporal climate conditions. The

    landfill hydrological cycle has similarities with urban hydrological cycle; however, there are additional components

    related to landfill specification, e.g., irrigation or leachate recirculation as well as total produced leachate.

  • 90.
    Pehme, Kaur-Mikk
    et al.
    Estonian Univ Life Sci, Estonia.
    Orupold, Kaja
    Estonian Univ Life Sci, Estonia.
    Kuusemets, Valdo
    Estonian Univ Life Sci, Estonia.
    Tamm, Ottar
    Estonian Univ Life Sci, Estonia.
    Jani, Yahya
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM), Sweden.
    Tamm, Toomas
    Estonian Univ Life Sci, Estonia.
    Kriipsalu, Mait
    Estonian Univ Life Sci, Estonia.
    Field Study on the Efficiency of a Methane Degradation Layer Composed of Fine Fraction Soil from Landfill Mining2020Inngår i: Sustainability, E-ISSN 2071-1050, Vol. 12, nr 15, s. 1-16, artikkel-id 6209Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The main components of landfill gas are methane and carbon dioxide. Emissions of methane, a strong greenhouse gas, can be minimized by in situ oxidation in the bioactive cover layer. Typically, organic-rich porous materials such as compost are used for this process. In this study, the material for a biocover was obtained from the same landfill by landfill mining. The objective was to study the spatial distribution of gases and the efficiency of methane degradation in the biocover. The methane and carbon dioxide emissions were measured at 29 measuring points six times on the surface and once at a depth of 0.5 m. The highest values of both gases from the surface were recorded in July 2015: 1.0% for CO(2)and 2.1% for CH4. Deeper in the cover layer, higher values of methane concentration were recorded. The results showed that (a) methane from the waste deposit was entering the biocover, (b) the migration of methane to the atmosphere was low, (c) fluctuations in the composition of gases are seasonal, and (d) the trend in the concentration of CH(4)over time was an overall decrease. The described cover design reduces the CH(4)emissions in landfills using elements of circular economy-instead of wasting natural soils and synthetic liners for the construction of the final cover layer, functional waste-derived materials can be used.

  • 91.
    Qiu, J.
    et al.
    Department of Green Chemistry and Technology, Faculty of Bioscience Engineering, Ghent University, Belgium.
    De Souza, M. F.
    Department of Green Chemistry and Technology, Faculty of Bioscience Engineering, Ghent University, Belgium.
    Wang, Xiaolin
    Mälardalens universitet, Akademin för ekonomi, samhälle och teknik, Framtidens energi.
    Ok, Y. S.
    Korea Biochar Research Center, APRU Sustainable Waste Management Program & Division of Environmental Science and Ecological Engineering, Korea University, South Korea.
    Meers, E.
    Department of Green Chemistry and Technology, Faculty of Bioscience Engineering, Ghent University, Belgium.
    Influence of biochar addition and plant management (cutting and time) on ryegrass growth and migration of As and Pb during phytostabilization2024Inngår i: Science of the Total Environment, ISSN 0048-9697, E-ISSN 1879-1026, Vol. 913, artikkel-id 169771Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Phytostabilization of metal-contaminated soils can be enabled or improved by biochar application. However, biochar-aided effects vary on biochar types, and little attention has been paid to plant management (time and cutting) to enhance phytostabilization efficiency in synergy with biochar. Therefore, biochars derived from pig manure (PM), Japanese knotweed (JK), and a mixture of both (P1J1) were applied to Pb and As mining soil with ryegrass cultivation to assess the biochar-induced effects on plant growth, dissolved organic matter (DOM), As and Pb mobility, and bioaccumulation within a phytostabilization strategy. Additional treatments involving the combined biochar (P1J1) and ryegrass were conducted to explore the influence of sequential cutting and growing time on facilitating phytostabilization efficacy. Biochar applications promoted plant growth, progressively increasing over time, but were not enhanced by cutting. Short and long-wavelength humic-like DOM substances identified in the soil pore water after biochar application varied depending on the biochar types used, providing evidence for the correlation among DOM changes, biochar origin, and metal immobilization. Biochar-treated soils exhibited reduced Pb availability and enhanced As mobility, with P1J1 stabilizing Pb significantly similar to PM while causing less As mobilization as JK did. The mobilized As did not result in increased plant As uptake; instead, all biochar-added plants showed a significant decrease in As and Pb concentrations compared to those without biochar. Soil available As decreased while available Pb increased with time, and cutting did not influence soil As behavior but did reduce soil Pb release. Nevertheless, plant As and Pb concentrations decreased over time, whereas those in multiple-cut plants were generally higher than those without cuts. Biochar, especially P1J1, along with growth time, holds promise in promoting plant biomass, reducing plant Pb and As concentrations, and minimizing the migration of Pb–As within the soil.

  • 92. Rahman, Najeeb
    et al.
    Ullah, Ihsan
    Alam, Sultan
    Khan, Muhammad
    Shah, Luqman
    Zekker, Ivar
    Burlakovs, Juris
    Kallistova, Anna
    Pimenov, Nikolai
    Vincevica-Gaile, Zane
    Jani, Yahya
    Malmö universitet, Institutionen för Urbana Studier (US), Sweden.
    Zahoor, Mohammad
    Activated Ailanthus altissima Sawdust as Adsorbent for Removal of Acid Yellow 29 from Wastewater: Kinetics Approach2021Inngår i: Water, E-ISSN 2073-4441, Vol. 15, nr 13, s. 1-13, artikkel-id 2136Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    In this study, Ailanthus altissima sawdust was chemically activated and characterized by Scanning Electron Microscopy (SEM), Fourier Transform Infrared (FTIR), Energy Dispersive X rays (EDX), and surface area analyzer. The sawdust was used as an adsorbent for the removal of azo dye; Acid Yellow 29 (AY 29) from wastewater. Different kinetic and equilibrium models were used to calculate the adsorption parameters. Among the applied models, the more suitable model was Freundlich with maximum adsorption capacities of 9.464, 12.798, and 11.46 mg/g at 20 °C, 30 °C, and 40 °C respectively while R2 values close to 1. Moreover, the kinetic data was best fitted in pseudo second order kinetic model with high R2 values approaching to 1. Furthermore, adsorption thermodynamics parameters such as free energy, enthalpy, and entropy were calculated and the adsorption process was found to be exothermic with a value of ∆H° = −9.981 KJ mol−1, spontaneous that was concluded from ΔG° values which were negative (−0.275, −3.422, and −6.171 KJ mol−1 at 20, 30, and 40 °C respectively). A positive entropy change ∆S° with a value of 0.0363 KJ mol−1 indicated the increase disorder during adsorption process. It was concluded that the activated sawdust could be used as a suitable adsorbent for the removal of waste material, especially dyes from polluted waters.

  • 93.
    Reitsma, Lizette
    et al.
    RISE - Research Institutes of Sweden, Sweden.
    Hayley, Ho
    RISE - Research Institutes of Sweden, Sweden.
    Brunklaus, Birgit
    RISE - Research Institutes of Sweden, Sweden.
    Nyström, Sofie
    RISE - Research Institutes of Sweden, Sweden.
    Brikhan, Wasim
    RISE - Research Institutes of Sweden, Sweden.
    Schaeffer, Jennie
    Västmanlands läns museum, Sweden.
    Ryöppy, Merja
    University of Southern Denmark, Denmark.
    Larsen, Henry
    University of Southern Denmark, Denmark.
    Strøbech, Elena
    University of Southern Denmark, Denmark.
    Our burden - Carbondioxide theatre for climate action2019Inngår i: NORDES 2019: WHO CARES?, Espoo, Finland, 2019, artikkel-id 150Konferansepaper (Fagfellevurdert)
    Abstract [en]

    The biggest changes to the planet are made by humankind and action needs to be taken in order to guarantee a sustainable level of emissions for the planet (Rockström et al. 2009). In the project presented in this poster, we engage young citizens (from 15 to 20 years old), in critically reflecting on social norms and practices around climate goals and CO2 emissions, through participatory theatre methods. Only when those involved can get sufficient authority to determine and guide the research and the research agenda, can a project be truly participatory (Winschiers-Theophilus 2009). Participatory theatre offers ways to meet the longing for shared forums by engaging large groups of people in exploring difficult social dilemmas. It can potentially empower the young participants to change their own situations and organisations, as it is “likely to shake things into action or to “unfreeze” blocked situations ” (Shreyögg and Höpfl 2004).

    Fulltekst (pdf)
    FULLTEXT01
  • 94.
    Setyobudi, R H
    et al.
    University of Muhammadiyah Malang, Indonesia.
    Zalizar, L
    University of Muhammadiyah Malang, Indonesia.
    Wahono, S K
    University of South Australia, Australia;Indonesian Institutes of Sciences, Indonesia.
    Widodo, W
    University of Muhammadiyah Malang, Indonesia.
    Wahyudi, A
    University of Muhammadiyah Malang, Indonesia.
    Mel, M
    International Islamic University Malaysia, Malaysia.
    Prabowo, B
    Prasetiya Mulya University, Indonesia.
    Jani, Yahya
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM), Sweden.
    Nugroho, Y A
    PT Sinarmas Agroresources and Technology Tbk., Indonesia.
    Liwang, T
    PT Sinarmas Agroresources and Technology Tbk., Indonesia.
    Zaebudin, A
    University of Muhammadiyah Malang, Indonesia.
    Prospect of Fe non-heme on coffee flour made from solid coffee waste: Mini review2019Inngår i: IOP Conference Series: Earth and Environmental Science, IOP Publishing , 2019, s. 1-24, artikkel-id 012035Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Coffee flour (CF) from coffee pulp or husk, solid waste of coffee processing have launched in Canada since 2015. This product is claimed as certified of gluten-free, vegan, kosher, paleo, and non-GMO. Coffe flour is stated to contain three times Fe content than fresh spinach (Spinacia oleracea L.). Several receipts of cookies, donuts, and cakes using CF has been introduced as wheat flour substitution. However, the scientific publication of CF impact for health does not appear until August 2018 yet. A review has been carried out using data on Google with a maximum publication age of 15 yr. This Fe non-heme prospect is allegedly unable to be absorbed optimally by the organism. Coffee pulp and husk contain an inhibitor, such as caffeine, polyphenol, calcium, dietary fiber, manganese, magnesium, and zinc; which detain Fe absorption. On the other hand, the promoter/enhancer of Fe absorption such as vitamin C, vitamin A, and amino acid was decreased in CF processing. Several types of research have to be conducted to tackle this problem in Faculty of Medicine and Faculty of Agriculture and Animal Husbandry University Muhammadyah of Malang, Indonesia.

  • 95. Sivertun, Åke
    et al.
    Le Duc, Michael
    Mälardalens högskola, Akademin för hållbar samhälls- och teknikutveckling.
    A Systems Analysis of Pollutants Flow in an Area and their Environmental Impact Modelled by a Geographic Information System (GIS)1998Inngår i: Systems engineering models for waste management, 1998Konferansepaper (Annet vitenskapelig)
  • 96.
    Stigson, B.
    et al.
    Stigson and Partners AB, Sweden; University of Gothenburg, Gothenburg.
    Stigson, Peter
    Mälardalens högskola, Akademin för ekonomi, samhälle och teknik, Framtidens energi.
    A future resource and pollution constrained world-An agenda for a new partnership between business, governments and academia2015Inngår i: Technological forecasting & social change, ISSN 0040-1625, E-ISSN 1873-5509, Vol. 98, s. 255-259Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The world will undergo rapid and profound developments during the coming decades. This is due to a number of global mega trends, such as population growth, poverty alleviation and urbanisation. The result is a future that will be both resource and pollution constrained. Following the development of the past decades, this future also includes increased systems complexity and an interconnected world. To deal with these challenges, the global society must move towards a more collaborative approach that builds on a grand coalition of stakeholders. Building on experiences from global business, international policy advisory positions and research, this opinion-piece discusses items on an agenda to deal with the challenges in creating a sustainable future. 

  • 97.
    Stigson, Peter
    Mälardalens högskola, Akademin för ekonomi, samhälle och teknik, Framtidens energi.
    The Resource Nexus: Linkages Between Resource Systems2013Inngår i: Reference Module in Earth Systems and Environmental Sciences, Elsevier, 2013Kapittel i bok, del av antologi (Fagfellevurdert)
    Abstract [en]

    Resources are basic elements in building and operating our societies. Some are more fundamental than others, such as energy, water and food. These resources cannot however be viewed in isolation, as linkages between them mean that scarcity in one resource system can affect other systems. Moreover, competition and prices of resources are expected to increase. Planning and research on resources should thus consider such linkages and the status of ecosystems when analyzing how resources can be supplied both sustainably and resiliently.

  • 98.
    Sundin, Niina
    et al.
    Swedish University of Agricultural Sciences, Box 7032, Uppsala 75007, Sweden.
    Persson Osowski, Christine
    Mälardalens universitet, Akademin för hälsa, vård och välfärd, Hälsa och välfärd.
    Strid, Ingrid
    Swedish University of Agricultural Sciences, Box 7032, Uppsala 75007, Sweden.
    Eriksson, Mattias
    Swedish University of Agricultural Sciences, Box 7032, Uppsala 75007, Sweden.
    Surplus food donation: Effectiveness, carbon footprint, and rebound effect2022Inngår i: Resources, Conservation and Recycling, ISSN 0921-3449, E-ISSN 1879-0658, Vol. 181, s. 106271-106271, artikkel-id 106271Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [sv]

    Surplus food redistribution can be a way to relieve co-existing food insecurity and food waste. The food waste hierarchy ranks surplus food donations for human consumption as the next best strategy, when food waste cannot be prevented. However, the effectiveness of food donation in terms of the amount consumed, or food donation as a food waste management measure have rarely been assessed. The few studies conducted to date report substantial environmental savings, but the results may be sensitive to assumptions regarding substituted food. Rebound effects are also not included, but are likely to offset environmental savings from food donation. Therefore, this study investigated the effectiveness, carbon footprint, and rebound effect of a food donation system run by a charity in Sweden, and compared the results with those of anaerobic digestion. Multiple analytical methods were used, including material flow analysis, life cycle assessment, questionnaire, and 24-hour dietary recall. In the life cycle assessment, carbon footprint of substituted products were credited to the overall results using a system expansion. In addition, direct and indirect rebound effects associated with re-spending of substitution-related monetary savings were included. The results revealed a complex but effective network aimed at salvaging as much of the redistributed food as possible, with 78% of redistributed food eaten, but there was also a substantial rebound effect, offsetting 51% of potential carbon emissions savings from food donation. Nonetheless, the net result of food donation was almost twice the climate benefit of anaerobic digestion (-0.40 vs. -0.22 kg CO2e/FU), supporting the food waste hierarchy.

  • 99.
    Susanto, H.
    et al.
    Darma Persada University, Indonesia.
    Setyobudi, R. H.
    Darma Persada University, Indonesia;University of Muhammadiyah Malang, Indonesia.
    Chan, Y.
    Darma Persada University, Indonesia.
    Nur, S. M.
    Darma Persada University, Indonesia.
    Yandri, E.
    Darma Persada University, Indonesia.
    Burlakovs, Juris
    Estonian University of Life Sciences, Estonia.
    Asbanu, H.
    Darma Persada University, Indonesia.
    Nugroho, Y. A.
    PT SMART, Indonesia.
    Jani, Yahya
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM), Sweden.
    Development of the solar-energized foodstuff drying system for urban communities2020Inngår i: IOP Conference Series: Earth and Environmental Science / [ed] Setyobudi R.H., Institute of Physics (IOP) , 2020, artikkel-id 012009Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Urban in Indonesia, is no longer limited as a center of community settlement. Now the city also functions as a center of government, a central hierarchy, and a center of economic growth. As a logical consequence of the role of cities as a center of growth and economy, urban contributions to national economic growth are increasing. To overcome this problem, a portable conveyor of solar-energized drying system was designed. With the portable conveyor of solar-energized drying system, the dryer will be easily moved and flexible to use. The advantage of portable conveyor of solar-energized drying system is the drying process could be done continuously with a little human power. Therefore, this portable conveyor of solar-energized drying system is designed to use renewable energy sources. To examine the portable conveyor of solar-energized drying system, the foodstuff was used for a testing of ingredients. The portable conveyor of solar-energized drying system testing show that the amount of water content in the foodstuff reduced, the drying rate accelerate. In addition, the amount of heat energy needed for the drying process also reduced. Hence process of drying foodstuff more efficienct.

  • 100.
    Susanto, Herry
    et al.
    Darma Persada Univ, Indonesia.
    Setyobudi, Roy Hendroko
    Darma Persada Univ, Indonesia;Univ Muhammadiyah Malang, Indonesia.
    Sugiyanto, Didik
    Darma Persada Univ, Indonesia.
    Nur, Syukri Muhammad
    Darma Persada Univ, Indonesia.
    Yandri, Erkata
    Darma Persada Univ, Indonesia.
    Herianto, Herianto
    Darma Persada Univ, Indonesia.
    Jani, Yahya
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM), Sweden.
    Wahono, Satriyo Krido
    Indonesian Inst Sci, Indonesia.
    Adinurani, Praptiningsih Gamawati
    Merdeka Univ Madiun, Indonesia.
    Nurdiansyah, Yanuar
    Univ Jember, Indonesia.
    Yaro, Abubakar
    AHRO Sci Publishing, UK.
    Development of the Biogas-Energized Livestock Feed Making Machine for Breeders2020Inngår i: 4th International Conference on Electrical Systems, Technology and Information (ICESTI 2019) / [ed] Setyobudi, RH Burlakovs, J Soni, P Mahaswa, RK Turkadze, T, EDP Sciences , 2020, s. 1-13, artikkel-id 00010Konferansepaper (Fagfellevurdert)
    Abstract [en]

    The need for beef in Indonesia continues to increase. In 2020, it will require imports of 300 thousand t of meat or the equivalent of 1.7 x 10(6) cattle a year. To overcome the problem, the biogas-energized livestock feed making machine (copper) was designed. The advantage of this copper is the process of making the livestock feed can efficient and effective. Results of the calculations, known that with increasing miller rotation output, the resulting capacity shows an increase. Also, it can use drive motors that are available on the market with a power capacity of 50 W. Hence; this machine is very efficient in the use of electricity, high economic value, convenient and easy move to other places. Electricity for the engine is designed with renewable energy, namely biogas from co-digestion substrates namely animal feed waste, kitchen waste, cow dung and excreta disposal from septic tanks. This co-generation is expected to improve the life of the breeders

123 51 - 100 of 117
RefereraExporteraLink til resultatlisten
Permanent link
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annet format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annet språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf