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  • 1.
    Burlakovs, Juris
    et al.
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM).
    Ferrans, Laura
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM).
    Krumins, Janis
    University of Latvia, Latvia.
    Jani, Yahya
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM), Sweden.
    Hogland, William
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM).
    Klavins, Maris
    University of Latvia, Latvia.
    Fluorescence Spectroscopy – Applied Tool for Organic Matter Analysis2019Inngår i: Goldschmidt Abstracts, 2019, 2019Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Large applied projects in various sub-fields of environmental science studied and analyzed properties of organic matter. The “Life-Sure” is as continuation of started work for cost effective bottom sediments treatment where organic matter play important role of sorption of urban contaminants; “CONTRA” - beach wrack studies for advanced value-based bioeconomy development. Another project on Jurassic clay is interesting in discourse on Pleistocene glaciers glaciodynamics. Material from field was tested by 3D fluorescence excitation-emission matrix (EEM) providing “fingerprints” for a single compound or a mixture of fluorescent components. Thus humic macromolecules might be well seen nevertheless structural units have variable effects on the wavelength as well as intensity of fluorescence. It decreases with increasing molecular size of the humic macromolecule. For applied environmental projects this is well non-destructive tool to quantify the decomposition degree of organic matter requiring negligible amount of sample. This important method is valid for both organic matter and humic substances analytics. Chemical nature of humic substances can be correlated to structural information, e.g., functional groups, poly-condensation, aromaticity, dynamic properties related to intermolecular interactions. Acquired data from EEM provided significant input for scientific knowledge and innovation along with other analytical tools. 

  • 2.
    Burlakovs, Juris
    et al.
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM).
    Hogland, William
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM).
    Vincevica-Gaile, Zane
    University of Latvia, Latvia.
    Kriipsalu, Mait
    Estonia university of life sciences, Estonia;University of Latvia, Latvia.
    Klavins, Maris
    University of Latvia, Latvia.
    Jani, Yahya
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM), Sweden.
    Setyobudi, Roy Hendroko
    university of Muhammadiyah Malang, Indonesia.
    Bikše, Jānis
    University of Latvia, Latvia.
    Rud, Vasiliy
    Russian Agricultural Academy, Russia.
    Tamm, Toomas
    Estonia university of life sciences, Estonia.
    Environmental Quality of Groundwater in Contaminated Areas—Challenges in Eastern Baltic Region2020Inngår i: Water Resources Quality and Management in Baltic Sea Countries / [ed] Abdelazim M. Negm, Martina Zelenáková & Katarzyna Kubiak-Wójcicka, Switzerland: Springer , 2020, s. 59-84Kapittel i bok, del av antologi (Fagfellevurdert)
    Abstract [en]

    The lack of water in the future will force society to find more sophisticated solutions for treatment and improvement of groundwater wherever it comes from. Contamination of soil and groundwater is a legacy of modern society, prevention of contaminants spread and secondary water reuse options shall be considered. The aim of the book chapter is to give oversight view on problems and challenges linked to groundwater quality in Eastern Baltic region whilst through case studies explaining the practical problems with groundwater monitoring, remediation and overall environmental quality analysis. The reader will get introduced with case studies in industry levels as credibility of scientific fundamentals is higher when practical solutions are shown. Eastern Baltic countries experience cover contamination problems that are mainly of historic origin due to former Soviet military and industrial policy implementation through decades. Short summaries for each case study are given and main conclusions provided in form of recommendations at the very end of the chapter.

  • 3.
    Burlakovs, Juris
    et al.
    University of Latvia, Latvia.
    Jani, Yahya
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM), Sweden.
    Grinfelde, I.
    Latvia University of Life Sciences and Technologies, Latvia;Scientific Laboratory of Forest and Water Resources, Latvia.
    Pilecka, J.
    Latvia University of Life Sciences and Technologies, Latvia;Scientific Laboratory of Forest and Water Resources, Latvia.
    Valujeva, K.
    Latvia University of Life Sciences and Technologies, Latvia;Scientific Laboratory of Forest and Water Resources, Latvia.
    Geophysical aspects of abandoned landfill geomorphological and material properties macro-characterization2020Inngår i: International Multidisciplinary Scientific GeoConference Surveying Geology and Mining Ecology Management, SGEM, International Multidisciplinary Scientific Geoconference , 2020, s. 551-558Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Landfills (dumps) are places where the end of the life cycle of products can be found - useful material is dumped away from the sight creating contaminant flows around. Another problem is huge unexplored potential of resources recycling - we have limited knowledge also on useful elements and materials that are buried. The solution to overcome the limitations that provide remote sensing and traditional geodesy, proximal sensing techniques could be used. “Near surface geophysics” with operation at or just below the soil surface, significantly may contribute to give answers that traditionally are solved only after excavation. Geophysical methods are various, those can be active (i.e. create its own signal) or passive (i.e. register an existing signal); invasive (by inserting devices into the soil) or non-destructive. Some of these methods are static (e.g. a sequence of inserted electrodes), others can be used in a mobile way (e.g. pulled by a quad-bike). In general, their depth of exploration can vary from a few decimetres to some tens of metres. Thus in range of wide geophysical methodology spectrum almost all methods might be of use for unknown dump exploration depending on circumstances. In this paper, the aim is to macro-characterize anthropogenic geomorphological forms for contouring of old buried dumps by use of magnetometry, and geoelectric research methods to provide knowledge on approximate content of the dump. Protonmagnetometer was used in Eastern Latvia to determine unseen on surface dumpsite, buried in forest; induced polarisation and electric resistivity research was done in Southern Sweden for the macro-content analysis of dump hills composed of glass industry residuals and construction waste mixture. Geophysical surveying was performed to support site investigation with respect to landfill-related environmental problems, to enhance the opportunity for contouring of location of material mass and initially evaluate its physical properties. Results have shown good potential of geophysical surveying to spatially characterize landfill masses (location and dimensions) and to identify the internal structure of a landfill site, which already provides valuable information to estimate the landfill mining (material recovery) potential of landfills.

  • 4.
    Burlakovs, Juris
    et al.
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM).
    Jani, Yahya
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM), Sweden.
    Kriipsalu, M.
    Estonian Univ Life Sci, Estonia.
    Grinfelde, I.
    Latvia Univ Life Sci & Technol, Latvia.
    Pilecka, J.
    Latvia Univ Life Sci & Technol, Latvia.
    Hogland, William
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM).
    Implementation of new concepts in waste management in tourist metropolitan areas2020Inngår i: 2019 9TH INTERNATIONAL CONFERENCE ON ENVIRONMENT SCIENCE AND ENGINEERING (ICESE 2019) / [ed] Sevilla, NPM Quanrud, D, IOP Publishing , 2020, s. 1-10, artikkel-id 012017Konferansepaper (Fagfellevurdert)
    Abstract [en]

    The urban waste in tourist cities needs comprehensive global research efforts and proceeded action as for metropolitan areas huge impact and load on waste management is generated. Waste management and resource conservation strategies are prepared in state-of-the-art level however implementation and future improvement of the current situation is crucial. Some examples in waste prevention and management for better tourism, waste and resource management are provided in the paper as outcomes from Horizon2020 project "Urban Strategies for Waste Management in Tourist Cities". The policy and tools based on information gathered by scientists, municipal and NGOs experience (e.g. separation of bio-waste in catering industries, "sin-wastes" as from the bars, nightclubs and smoker places, reuse of unnecessary items that can serve for others and many more) are described. In addition, regulatory instruments (e.g. ban of plastic bags, reduction of allowed bio-waste in landfilling), economic instruments (taxes) and voluntary agreements (e.g. deposit systems; cleaning actions by volunteers) might be used to implement and elaborate the situation within environmental management and prevention practices in tourist metropolitan cities. Food waste prevention, beach and littoral management, special practices for festival waste and large amount specific waste generating facilities (e.g., entertainment industry, cruises etc.) are of high importance. The future outlook may be concentrated on digitalizing of waste flows and using the "big data" concept for better and smarter waste management.

  • 5.
    Burlakovs, Juris
    et al.
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM).
    Jani, Yahya
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM), Sweden.
    Kriipsalu, Mait
    Estonian Univ Life Sci, Estonia.
    Vincevica-Gaile, Zane
    Univ Latvia, Latvia.
    Kaczala, Fabio
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM).
    Celma, Gunita
    Univ Latvia, Latvia.
    Ozola, Ruta
    Univ Latvia, Latvia.
    Rozina, Laine
    Univ Latvia, Latvia.
    Rudovica, Vita
    Univ Latvia, Latvia.
    Hogland, Marika
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM).
    Viksna, Arturs
    Univ Latvia, Latvia.
    Pehme, Kaur-Mikk
    Estonian Univ Life Sci, Estonia.
    Hogland, William
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM).
    Klavins, Maris
    Univ Latvia, Latvia.
    On the way to 'zero waste' management: Recovery potential of elements, including rare earth elements, from fine fraction of waste2018Inngår i: Journal of Cleaner Production, ISSN 0959-6526, E-ISSN 1879-1786, Vol. 186, s. 81-90Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Existing schemes of solid waste handling have been improved implementing advanced systems for recovery and reuse of various materials. Nowadays, the 'zero waste' concept is becoming more topical through the reduction of disposed waste. Recovery of metals, nutrients and other materials that can be returned to the material cycles still remain as a challenge for future. Landfill mining (LFM) is one of the approaches that can deal with former dumpsites, and derived materials may become important for circular economy within the concept 'beyond the zero waste'. Perspectives of material recovery can include recycling of critical industrial metals, including rare earth elements (REEs). The LFM projects performed in the Baltic Region along with a conventional source separation of iron-scrap, plastics etc. have shown that the potential of fine-grained fractions (including clay and colloidal matter) of excavated waste have considerably large amounts of potentially valuable metals and distinct REEs. In this paper analytical screening studies are discussed extending the understanding of element content in fine fraction of waste derived from excavated, separated and screened waste in a perspective of circular economy. Technological feasibility was evaluated by using modified sequential extraction technique where easy extractable amount of metals can be estimated. Results revealed that considerable concentrations of Mn (418-823 mg/kg), Ni (41-84 mg/kg), Co (10.7-19.3 mg/kg) and Cd (1.0-3.0 mg/kg) were detected in fine fraction (<10 mm) of waste sampled from Hogbytorp landfill, while Cr (49-518 mg/kg) and Pb (30-264 mg/kg) were found in fine fraction (<10 mm) of waste from Torma landfill revealing wide heterogeneity of tested samples. Waste should become a utilizable resource closing the loop of anthropogenic material cycle as the hidden potential of valuable materials in dumps is considerable.

  • 6.
    Burlakovs, Juris
    et al.
    University of Latvia, Latvia.
    Kriipsalu, Mait
    Estonian University of Life Sciences, Estonia.
    Arina, Dace
    Institute of Physical Energetics, Latvia.
    Kaczala, Fabio
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM).
    Ozola, Ruta
    University of Latvia, Latvia.
    Denafas, Gintaras
    Kaunas University of Technology, Lithuania.
    Hogland, Marika
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM).
    Mykhaylenko, Valeriy
    Taras Shevchenko National University of Kyiv, Ukraine.
    Jani, Yahya
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM), Sweden.
    Orupold, Kaja
    Estonian University of Life Sciences, Estonia.
    Turkadze, Tsitsino
    A. Tsereteli State University, Georgia.
    Daugelaite, Valdone
    Kaunas University of Technology, Lithuania.
    Bucinskas, Algimantas
    Kaunas University of Technology, Lithuania.
    Rudovica, Vita
    University of Latvia, Latvia.
    Horttanainen, Mika
    Lappeenranta University of Technology, Finland.
    Klavins, Maris
    University of Latvia, Latvia.
    Hogland, William
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM).
    Metals and rare Earth’s elements in landfills: case studies2016Inngår i: 3rd Int. Symposium on Enhanced Landfill Mining, Lisboa, 8-10/2/2016, 2016Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Landfills are considered as places where the life cycle of products ends and materialshave been “disposed forever”. The landfill mining (LFM) approach can deal with formerdumpsites and this material may become important for circular economy perspectiveswithin the concept “Beyond the zero waste”. Potential material recovery should includeperspectives of recycling of critical industrial metals where rare Earth elements (REEs)are playing more and more important role. Real-time applied LFM projects in the BalticRegion have shown the potential of fine-grained fractions (including clay and colloidalmatter) of excavated waste as storage of considerably large amounts of valuable metalsand REEs. Analytical screening studies have extended a bit further the understanding offine fraction contents of excavated, separated and screened waste in a circular economyperspective. The Swedish Institute and Latvian Research Program “Res Prod” supportedthe research.

  • 7.
    Burlakovs, Juris
    et al.
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM).
    Kriipsalu, Mait
    Estonian Univ Life Sci, Estonia.
    Klavins, Maris
    Univ Latvia, Latvia.
    Bhatnagar, Amit
    Univ Eastern Finland, Finland.
    Vincevica-Gaile, Zane
    Univ Latvia, Latvia.
    Stenis, Jan
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM).
    Jani, Yahya
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM), Sweden.
    Mykhaylenko, Valeriy
    Taras Shevchenko Natl Univ Kyiv, Ukraine.
    Denafas, Gintaras
    Fac Chem Technol, Lithuania.
    Turkadze, Tsitsino
    Akaki Tsereteli State Univ, Republic of Georgia.
    Hogland, Marika
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM).
    Rudovica, Vita
    Univ Latvia, Latvia.
    Kaczala, Fabio
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM).
    Rosendal, Rene Moller
    Danish Waste Solut ApS, Denmark.
    Hogland, William
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM).
    Paradigms on landfill mining: From dump site scavenging to ecosystem services revitalization2017Inngår i: Resources, Conservation and Recycling, ISSN 0921-3449, E-ISSN 1879-0658, Vol. 123, s. 73-84Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    For the next century to come, one of the biggest challenges is to provide the mankind with relevant and sufficient resources. Recovery of secondary resources plays a significant role. Industrial processes developed to regain minerals for commodity production in a circular economy become ever more important in the European Union and worldwide. Landfill mining (LFM) constitutes an important technological toolset of processes that regain resources and redistribute them with an accompanying reduction of hazardous influence of environmental contamination and other threats for human health hidden in former dump sites and landfills. This review paper is devoted to LFM problems, historical development and driving paradigms of LFM from 'classical hunting for valuables' to 'perspective in ecosystem revitalization'. The main goal is to provide a description of historical experience and link it to more advanced concept of a circular economy. The challenge is to adapt the existing knowledge to make decisions in accordance with both, economic feasibility and ecosystems revitalization aspects. (

  • 8.
    Burlakovs, Juris
    et al.
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM).
    Kriipsalu, Mait
    Estonian Univ Life Sci, Estonia.
    Porshnov, Dmitry
    Univ Latvia, Latvia.
    Jani, Yahya
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM), Sweden.
    Ozols, Viesturs
    Univ Latvia, Latvia.
    Pehme, Kaur-Mikk
    Estonian Univ Life Sci, Estonia.
    Rudovica, Vita
    Univ Latvia, Latvia.
    Grinfelde, Inga
    Latvia Univ Life Sci & Technol, Latvia.
    Pilecka, Jovita
    Latvia Univ Life Sci & Technol, Latvia.
    Vincevica-Gaile, Zane
    Univ Latvia, Latvia.
    Turkadze, Tsitsino
    Akaki Tsereteli State Univ, Georgia.
    Hogland, William
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM).
    Klavins, Maris
    Univ Latvia, Latvia.
    Gateway of Landfilled Plastic Waste Towards Circular Economy in Europe2019Inngår i: Separations, E-ISSN 2297-8739, Vol. 6, nr 2, s. 1-8, artikkel-id 25Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    For decades, significant work has been conducted regarding plastic waste by dealing with rejected materials in waste masses through their accumulation, sorting and recycling. Important political and technical challenges are involved, especially with respect to landfilled waste. Plastic is popular and, notwithstanding decrease policies, it will remain a material widely used in most economic sectors. However, questions of plastic waste recycling in the contemporary world cannot be solved without knowing the material, which can be achieved by careful sampling, analysis and quantification. Plastic is heterogeneous, but usually all plastic waste is jointly handled for recycling and incineration. Separation before processing waste through the analytical approach must be applied. Modern landfill mining and site clean-up projects in contemporary waste management systems require comprehensive material studies ranging from the macro-characterization of waste masses to a more detailed analysis of hazardous constituents and properties from an energy calorific standpoint-where, among other methods, thermogravimetric research coupled with life cycle assessment (LCA) and economic assessment is highly welcomed.

  • 9.
    Burlakovs, Juris
    et al.
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM).
    Purmalis, Oskars
    Krievāns, Māris
    Jani, Yahya
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM), Sweden.
    Ground-penetrating Radar (GPR) Geoenvironmental Screening in Lakes of Latvia - Challenges and Outcomes2016Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Geophysical studies in mapping and geoenvironmental applications for screening purposes are widely applied in Latvia. Ground-penetrating radar (GPR) as the one method from geophysical toolbox is a non-invasive and non-destructive way where pulsed electromagnetic signal is recorded as scattering from subsurface objects. Aim of two described screening studies was to analyse potential advantages of GPR use for mapping bottom sediments and topography in two lakes and pinpoint challenges to overcome during works. Both lakes are relatively deep and of sub-glacial origin that became lakes after the ice retreat from Baltic region. Characterization of bottom sediments as well as full core description of upper limnic layers for comparison with GPR signals were performed. Major results show that GPR, coring and laboratory analysis can be used simultaneously, however, ground penetration radar sometimes fails to recognize full picture needed for geoenvironmental application needs. Proper treatment of data nevertheless diminish the necessity of dense coring in lakes when budgets are strict.

  • 10.
    Burlakovs, Juris
    et al.
    Univ Latvia, Latvia.
    Vincevica-Gaile, Zane
    Univ Latvia, Latvia.
    Krievans, Maris
    Univ Latvia, Latvia.
    Jani, Yahya
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM), Sweden.
    Horttanainen, Mika
    Lappeenranta Lahti Univ Technol, Finland.
    Pehme, Kaur-Mikk
    Estonian Univ Life Sci, Estonia.
    Dace, Elina
    Univ Latvia, Latvia;Riga Stradins Univ, Latvia.
    Setyobudi, Roy Hendroko
    Univ Muhammadiyah Malang, Indonesia.
    Pilecka, Jovita
    Latvia Univ Life Sci & Technol, Latvia.
    Denafas, Gintaras
    Kaunas Univ Technol, Lithuania.
    Grinfelde, Inga
    Latvia Univ Life Sci & Technol, Latvia.
    Bhatnagar, Amit
    Univ Eastern Finland, Finland.
    Rud, Vasiliy
    Russian Agr Acad ARRIP, Russia.
    Rudovica, Vita
    Univ Latvia, Latvia.
    Mersky, Ronald L.
    Widener Univ, USA.
    Anne, Olga
    Klaipeda Univ, Lithuania.
    Kriipsalu, Mait
    Estonian Univ Life Sci, Estonia.
    Ozola-Davidane, Ruta
    Univ Latvia, Latvia.
    Tamm, Toomas
    Estonian Univ Life Sci, Estonia.
    Klavins, Maris
    Univ Latvia, Latvia.
    Platinum Group Elements in Geosphere and Anthroposphere: Interplay among the Global Reserves, Urban Ores, Markets and Circular Economy2020Inngår i: Minerals, E-ISSN 2075-163X, Vol. 10, nr 6, s. 1-19, artikkel-id 558Artikkel, forskningsoversikt (Fagfellevurdert)
    Abstract [en]

    Industrial and strategic significance of platinum group elements (PGEs)-Os, Ir, Ru, Rh, Pd, Pt-makes them irreplaceable; furthermore, some PGEs are used by investors as "safe heaven" assets traded in the commodity markets. This review analyzes PGEs from various aspects: their place in the geosphere, destiny in the anthroposphere, and opportunity in the economy considering interactions among the exploration, recycling of urban ores, trade markets, speculative rhetoric, and changes required for successful technological progress towards the implementation of sustainability. The global market of PGEs is driven by several concerns: costs for extraction/recycling; logistics; the demand of industries; policies of waste management. Diversity of application and specific chemical properties, as well as improper waste management, make the recycling of PGEs complicated. The processing approach depends on composition and the amount of available waste material, and so therefore urban ores are a significant source of PGEs, especially when the supply of elements is limited by geopolitical or market tensions. Recycling potential of urban ores is particularly important in a long-term view disregarding short-term economic fluctuations, and it should influence investment flows in the advancement of innovation.

  • 11.
    Denafas, G.
    et al.
    Kaunas University of Technology, Lithuania.
    Bučinskas, A
    Kaunas University of Technology, Lithuania.
    Burlakovs, Juris
    University of Latvia, Latvia.
    Dace, E
    Riga Technical University, Latvia.
    Bazienė, K
    Vilnius Gediminas Technical University, Lithuania.
    Horttanainen, M
    Lappeenranta University of Technology, Finland.
    Havukainen, J
    Lappeenranta University of Technology, Finland.
    Kaartinen, T
    VTT Technical Research Center of Finland, Finland.
    Rosendal, R
    Danish Waste Solutions, Denmark.
    Kriipsalu, M
    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).
    Investigation for landfill mining feasibilities in the Nordic and Baltic countries: overview of project results2016Inngår i: CYPRUS 2016 4th International Conference on Sustainable Solid Waste Management, At Limassol, Cyprus, 23–25 June 2016., 2016, s. 1-13Konferansepaper (Fagfellevurdert)
  • 12.
    Ferrans, Laura
    et al.
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM).
    Jani, Yahya
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM), Sweden.
    Burlakovs, Juris
    Estonian University of Life Sciences, Estonia.
    Klavins, Maris
    University of Latvia, Latvia.
    Hogland, William
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM).
    Chemical speciation of metals from marine sediments: assessment of potential pollution risk while dredging, a case study in southern Sweden2021Inngår i: Chemosphere, ISSN 0045-6535, E-ISSN 1879-1298, Vol. 263, nr January, s. 1-9, artikkel-id 128105Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Contamination associated with metals is a critical concern related to their toxicity, persistence, and bio-accumulation. Trace elements are partitioned into several chemical forms, which some are more labile during fluctuations in the environment. Studying the distribution of metals between the different chemical fractions contributes to assess their bioavailability and to identify their potential risk of contamination to surrounding environments. This study concerns the speciation of metals (Pb, Cr, Ni, Zn and Fe) from sediments coming out from Malmfjärden bay, Sweden. The aim was to assess the potential risk of metal pollution during present and future dredging as well as while using dredged sediments in beneficial uses. The Tessier speciation procedure was chosen, and the results showed that low concentrations of metals were associated with the exchangeable fraction. In contrast, the major concentrations were linked to the residual part. The risk indexes (contamination factor and risk assessment code) showed that, during dredging activities, there is a low concern of pollution for Cr, Ni and Fe and a medium risk for Pb and Zn. Additionally, in all elements, the sum of non-residual concentrations was below the Swedish limits for using dredged sediments in sensitive lands. The findings suggested that the investigated metals in Malmfjärden sediments are related to low risks of spreading during using in beneficial uses.

  • 13.
    Hogland, Marika
    et al.
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM).
    Arina, Dace
    Inst Phys Energet, Latvia.
    Kriipsalu, Mait
    Estonian Univ Life Sci, Estonia.
    Jani, Yahya
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM), Sweden.
    Kaczala, Fabio
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM).
    de Sa Salomao, Andre Luis
    Univ Estado Rio De Janeiro, Brazil.
    Orupold, Kaja
    Estonian Univ Life Sci, Estonia.
    Pehme, Kaur-Mikk
    Estonian Univ Life Sci, Estonia.
    Rudovica, Vita
    Univ Latvia, Latvia.
    Denafas, Gintaras
    Kaunas Technol Univ, Lithuania.
    Burlakovs, Juris
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM).
    Vincevica-Gaile, Zane
    Univ Latvia, Latvia.
    Hogland, William
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM).
    Remarks on four novel landfill mining case studies in Estonia and Sweden2018Inngår i: Journal of Material Cycles and Waste Management, ISSN 1438-4957, E-ISSN 1611-8227, Vol. 20, nr 2, s. 1355-1363Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    In common sense, a landfill is a place where the life cycle of products ends. Landfill mining (LFM) mostly deals with former dumpsites and derived material may have a significant importance for the circular economy. Deliverables of recently applied LFM projects in Sweden and Estonia have revealed the potential and problems for material recovery. There are 75-100 thousand old landfills and dumps in the Baltic Sea Region, and they pose environmental risks to soil, water and air by pollution released from leachate and greenhouse gas emissions. Excavation of landfills is potential solution for solving these problems, and at the same time, there are perspectives to recover valuable lands and materials, save expenses for final coverage of the landfills and aftercare control. The research project "Closing the Life Cycle of Landfills-Landfill Mining in the Baltic Sea Region for Future" included investigation at four case studies in Estonia and Sweden: Kudjape, Torma, Hogbytorp and Vika landfills. Added value of this research project is characterization of waste fine fraction material, determination of concentration for most critical and rare earth elements. The main results showed that both, coarse and fine, fractions of waste might have certain opportunities of recovery.

  • 14.
    Hogland, William
    et al.
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM).
    Burlakovs, Juris
    Estonian University of Life Sciences, Estonia.
    Jani, Yahya
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM), Sweden.
    Sorting of wastewaters for urban and rural recycling and reuse2019Inngår i: XVI-th International youth Science and Environmental Baltic Region Countries Forum 7–9 October 2019, Gdansk, Poland, Institute of Physics (IOP) , 2019, s. 1-5, artikkel-id 012001Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Drinking water of good quality, in enough quantity at right time start to be very scarce in the world. At the same time perfect drinking water is used to flushing toilet, cleansing of sewage pipes, washing of industry floors, firefighting, washing of cars and trucks etc. Also agriculture is suffering of lack of water for irrigation during dry periods and it is necessary to use drinking water or river/lake water of high quality to get rich harvest of good quality. In the future drinking water must just be used as food stuff and not wasted in the society. People must, since they are children, be trained to respect the drinking water and not waste a single drop. Also, storm water can be considered as a source of fresh water if it collected and recycled properly. Recycling/reuse of treated/reclaimed wastewater will help to mitigate part of the increasing water demands in the society and secondary water can be used in non-potable end paths such as agriculture, industry or even recharging water aquifers.  Reclaimed/technical or recycled water for non-potable uses such as flushing toilets, irrigation and other uses will be very important in modern society in the future.

  • 15.
    Hogland, William
    et al.
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM).
    Burlakovs, Juris
    Estonian University of Life Sciences, Estonia.
    Mutafela, Richard
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM).
    Jani, Yahya
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM), Sweden.
    From glass dump to phytoremediation park2019Inngår i: XVI-th International youth Science and Environmental Baltic Region Countries Forum 7–9 October 2019, Gdansk, Poland, Institute of Physics (IOP) , 2019, s. 1-4, artikkel-id 012007Konferansepaper (Fagfellevurdert)
    Abstract [en]

    The Landfill mining was introduced in research in Sweden for more than three and a half decades ago. During recent years, the focus has been on the glass dumps in the Kingdom of Crystal in southeastern Sweden. Mapping of the dumps, test pit excavations, sieving and sorting of the glass masses, characterization, laboratory extraction of the metals in the glass was performed as well as measurements of radioactivity done. The polluted soil underneath the removed glass masses was treated by remediation. At one of places at the Kingdom of Crystal a phytoremediation/tourist park was established in Orrefors including a summer glasswork for tourist activities.

  • 16.
    Jani, Yahya
    et al.
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM), Sweden.
    Burlakovs, Juris
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM).
    Augustsson, Anna
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM).
    Marques, Marcia
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM).
    Hogland, William
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM).
    Characterization and toxicity of hazardous wastes from an old Swedish glasswork dumpManuskript (preprint) (Annet vitenskapelig)
    Abstract [en]

    More than 34 old glasswork sites in the southeastern part of Sweden pose a permanent threat to human and environmental health due to the presence of toxic metals in open dumps with glass waste. The possibility of leaching of metals from different fractions of the disposed waste needed to be assessed. In the present investigation, leachate from fine fraction (soil plus glass particles < 2 mm) was characterized as following: pH (7.3), TOC (< 2%), organic content (4.4%), moisture content (9.7), COD (163 mg/kg) and trace elements content, being the values in accordance to the Swedish guidelines for landfilling of inert materials. However, very high metals content was found in the fine fraction as well as in all colors of the glass fraction (≥ 2 mm), whose values were compatible to hazardous waste landfill class. Tests with Lepidium sativum growing in the fine fraction as substrate revealed chronic toxicity expressed as inhibition of root biomass growth in 11 out of 15 samples. Additionally, leachate from fine fractions posed acute toxicity to genetically modified E. coli (Toxi-Chromotest). This study highlights the importance of combining physicochemical characterization with toxicity tests for both solid waste and leachate obtained from different waste fractions for proper hazardousness assessment supporting decision making on remediation demands.

  • 17.
    Jani, Yahya
    et al.
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM), Sweden.
    Burlakovs, Juris
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM).
    Augustsson, Anna
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM).
    Marques, Marcia
    Rio de Janeiro State University, Brazil.
    Hogland, William
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM).
    Physicochemical and toxicological characterization of hazardous wastes from an old glasswork dump at southeastern part of Sweden2019Inngår i: Chemosphere, ISSN 0045-6535, E-ISSN 1879-1298, Vol. 237, s. 1-8, artikkel-id 124568Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    More than 34 old glasswork sites in the southeastern part of Sweden pose a permanent threat to human and environmental health due to the presence of toxic trace elements in open dumps with glass waste. The possibility of leaching of trace elements from different fractions of the disposed waste needed to be assessed. In the present investigation, leachate from a mixture of soil and waste glass of particle sizes of less than 2mm (given the name fine fraction) was characterized by analyzing the pH (7.3), total organic content (TOC<2%), organic matter content (4.4%), moisture content (9.7%), chemical oxygen demand (COD, 163mg/kg) and trace elements content, being the values in accordance to the Swedish guidelines for landfilling of inert materials. However, very high trace elements content was found in the fine fraction as well as in all colors of waste glass, whose values were compatible to hazardous waste landfill class. Tests with Lepidium sativum growing in the fine fraction as substrate revealed chronic toxicity expressed as inhibition of root biomass growth in 11 out of 15 samples. Additionally, leachate from fine fractions posed acute toxicity to genetically modified E. coli (Toxi-Chromotest). This study highlights the importance of combining physicochemical characterization with toxicity tests for both solid waste and leachate obtained from different waste fractions for proper hazardousness assessment supporting decision making on remediation demands.

  • 18.
    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.

  • 19.
    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.

  • 20.
    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.

  • 21.
    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.

  • 22.
    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.

  • 23.
    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.

  • 24.
    Porshnov, Dmitry
    et al.
    University of Latvia, Latvia.
    Burlakovs, Juris
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM).
    Kriipsalu, Mait
    University of Latvia, Latvia;Estonian University of Life Sciences, Estonia.
    Pilecka, Jovita
    Latvia University of Life Sciences and Technologies, Latvia.
    Grinfelde, Inga
    Latvia University of Life Sciences and Technologies, Latvia.
    Jani, Yahya
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM), Sweden.
    Hogland, William
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM).
    Geoparks in cultural and landscape preservation context2019Inngår i: 25th Annual International Scientific Conference "Research for Rural Development 2019" 15 - 17 May, 2019, Jelgava: Latvia University of Life Sciences and Technologies , 2019, s. 154-159Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Society aims to develop frames for recognizing important geological and geomorphological sites and features or landscapes within their national and even transnational boundaries. Earth heritage sites educate the general public and preserve cultural and environmental matters. New trends of sustainable development, importance of site conservation are demanding that landforms and landscapes, rocks, minerals, fossils, soils should be protected legally, as they give understanding about the evolution of Mother Earth in local and regional context to generations. The Geopark concept was developed in cooperation with UNESCO and followed a large number of requests to UNESCO from all over the world, from geological institutions and geoscientists and non-governmental organizations, and it became extremely popular and influential to preserve those geological heritage areas, nowadays still recognized only nationally or not at all. This paper aims to give comprehensive overview of existing geoparks in the Baltic Sea Region, as well as analyze aspiring geoparks and unpublished initiatives of potential geopark (Livonia and Vooremaa) eventual establishment in frames of cultural and landscape preservation context. Criteria, requirements and earlier studies are given in context. The geoparks should mainly contain cultural and educational purpose while targeting the least possible damage in preservational aspect

  • 25.
    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.

  • 26.
    Valujeva, Kristine
    et al.
    Latvia University of Life Science and Technologies, Latvia.
    Burlakovs, Juris
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM).
    Grinfelde, Inga
    Latvia University of Life Science and Technologies, Latvia.
    Pilecka, Jovita
    Latvia University of Life Science and Technologies, Latvia.
    Jani, Yahya
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM), Sweden.
    Hogland, William
    Linnéuniversitetet, Institutionen för biologi och miljö (BOM).
    Phytoremediation as tool for prevention of contaminant flow to hydrological systems2018Inngår i: Research for Rural Development 2018: Engineering, landscape architecture, Jelgava: Latvia University of Agriculture , 2018, s. 188-194Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Management of remediation projects in contaminated sites has become an increasingly global challenge and nowadays takes intensive international environmentally sound cooperation intended to relieve negative consequences of landscape pollution. This paper aims to deal with the phytoremediation approach for protection of environment and preventing the streaming of contaminant flows to hydrological systems. Phytoremediation is a cost-effective environmentally friendly clean-up technology, which uses plants and microorganisms in rhizosphere for soil and groundwater treatment. Phytoremediation is enhancing degradation of organic pollutants and improving stabilization of inorganic contaminants where plants can be used to treat soil and water polluted with hydrocarbons, chlorinated substances, pesticides, metals, explosives, radionuclides as well as to reduce the excess of nutrients. Selection of species for this type of treatment processes is based on evapotranspiration potential and ability to bioaccumulate contaminants. The project entitled “Phytoremediation Park for treatment and recreation at glassworks contaminated sites“ (PHYTECO) aimed at cross-sector international partnership. The challenge of project was to develop remediation strategy where negative consequences from centuries long anthropogenic influence are turned to be something positive - development of the recreation park from the glass dump. Here designers, scientists, local volunteers, international students would join ideas and common work for the boost of innovation and sustainable thinking. New “Knowledge in Inter Baltic Partnership Exchange for Future Regional Circular Economy Cooperation“ (PECEC) project is sequential continuation.

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