mdh.sePublications
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Leaching of contaminants from untreated pine bark in a batch study: Chemical analysis and ecotoxicological evaluation
Mälardalen University, School of Business, Society and Engineering. (MERO)ORCID iD: 0000-0002-9563-9688
Mälardalen University, School of Sustainable Development of Society and Technology. (MERO)ORCID iD: 0000-0003-3311-9465
Mälardalen University, School of Sustainable Development of Society and Technology. (MERO)ORCID iD: 0000-0001-5480-0167
Mälardalen University, School of Sustainable Development of Society and Technology. (MERO)
2009 (English)In: Journal of Hazardous Materials, ISSN 0304-3894, E-ISSN 1873-3336, Vol. 163, no 2-3, p. 1096-1100Article in journal (Refereed) Published
Abstract [en]

Low cost sorbents have been widely studied in recent years in the search for filter materials that retain contaminants from water. One promising, low cost material is pine bark, a by-product from the forest industry. Many studies have shown that pine bark has great potential for the treatment of metals and organic substances, as a replacement for other commercial sorbents such as active carbon. However, some potential problems are introduced through the use of natural materials and by-products. One such problem that must be addressed is the possibility of leaching of contaminants from the filter material, especially in the initial filtration step or during flushes of lightly contaminated water, e.g. during rainfall for on-site treatment of stormwater or landfill leachate. The aim of this preliminary studywas therefore to identify potential risks and limitations of using pine bark as a filter material. Leachate from a standardized batch test was analysed for metals, dissolved organic carbon (DOC) and phenols. In addition to these chemical analyses, an ecotoxicological test was conducted using the test organism

Daphnia magna. The results showed significant leaching of DOC and some metals. Only a small fraction of the DOC was present as phenols. The leachate was however found to be toxic to the test organism without pH adjustment, and the EC 50 was established at an approximate leachate concentration of 40%. This was concluded to be related to the low pH in the eluate, since no toxicity was observed after pH adjustment before the toxicity tests.

Place, publisher, year, edition, pages
2009. Vol. 163, no 2-3, p. 1096-1100
National Category
Engineering and Technology
Research subject
Energy- and Environmental Engineering
Identifiers
URN: urn:nbn:se:mdh:diva-1158DOI: 10.1016/j.jhazmat.2008.07.063ISI: 000264160000082PubMedID: 18757135Scopus ID: 2-s2.0-59849105483OAI: oai:DiVA.org:mdh-1158DiVA, id: diva2:37412
Available from: 2008-10-03 Created: 2008-10-03 Last updated: 2017-12-12Bibliographically approved
In thesis
1. Assessment of waters with complex contamination: Effect-based methods for evaluating wastewater treatment requirements and efficiency
Open this publication in new window or tab >>Assessment of waters with complex contamination: Effect-based methods for evaluating wastewater treatment requirements and efficiency
2012 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

The access to clean water is one of the prerequisites for a modern, industrialized society. The amount of water withdrawn for human activities has risen exponentially during the last 100 years. This rise in water use is accompanied by the production of vast quantities of contaminated water. These wastewaters may be contaminated by substances ranging from heavy metals and organic compounds to nutrients like nitrogen and phosphorous. The aggregate effect of combinations of water contaminants can be difficult to predict as different contaminant substances may interact, leading to additive, synergistic or antagonistic toxic effects in a receiving aquatic ecosystem. With increasing water quality legislation, the pressure to characterize and potentially treat contaminated waters increases. Suitable effect-based assessment methods may greatly reduce the costs of both the wastewater characterization process and the water treatment evaluation. The overall aim of this thesis was to show how a combination of ecotoxicity bioassays may be employed in water treatment method development for initial characterization, assessment of treatment requirements and finally treatment evaluation. The wastewaters characterized originated from different activities such as waste management, metal surfacing and explosives destruction. To fully assess the hazard of the waters sampled, a holistic approach using a combination of chemical tests and bioassays was taken. A combination of acute and chronic assays was used to determine mode-of-action effects and apical endpoints in the aquatic environment. The basic battery consisted of the acute Vibrio fischeri test, the chronic algae test using Pseudokirchneriella subcapitata and either the planktonic crustacean Daphnia magna (for aqueous samples) or the meiobenthic crustacean Heterocypris incongruens (for whole-sediment/soil samples).  In addition to the basic test battery, the mode-of-action Salmonella typhimurium test was used to assess genotoxic effects. Results from the water hazard characterization show that ecotoxicological tests contribute to the evaluation of treatment methods for complex wastewaters by assessing the aggregate biological effect of water treatment. The tests may be used as a screening method to indicate where further treatment may be required, even when chemical measurements show a satisfactory reduction of known contaminants. The toxic effect exerted by the assessed waters did not always correlate with measured levels of contaminants or the chemical measures of bioavailability, e.g. leached fraction. The water treatment evaluation showed that the industrial by-product pine bark is an effective adsorbent for capturing metal contaminants from landfill leachates and stormwater. The pine bark column filter had higher zinc removal efficiency than the polonite filter and the combination filter column with pine bark/polonite. In conclusion, a pine bark filter is a suitable alternative to activated carbon for small-scale, decentralized treatment of wastewaters. Furthermore, the ecotoxicity tests were able to detect effects of unknown contaminants and provided unique characterization data, which complemented the information provided by the chemical analyses.

Place, publisher, year, edition, pages
Västerås: Mälardalen University, 2012. p. 71
Series
Mälardalen University Press Dissertations, ISSN 1651-4238 ; 127
Keywords
Effect-based test methods; wastewater treatment; ecotoxicology; bioassays
National Category
Engineering and Technology
Research subject
Energy- and Environmental Engineering
Identifiers
urn:nbn:se:mdh:diva-14624 (URN)978-91-7485-073-4 (ISBN)
Public defence
2012-06-13, Gamma, Mälardalens högskola, Högskoleplan 1, Västerås, 10:00 (English)
Opponent
Supervisors
Projects
CLEANBIOREX
Available from: 2012-05-21 Created: 2012-05-18 Last updated: 2013-11-28Bibliographically approved

Open Access in DiVA

No full text in DiVA

Other links

Publisher's full textPubMedScopus

Authority records BETA

Ribé, VeronicaNehrenheim, EmmaOdlare, Monica

Search in DiVA

By author/editor
Ribé, VeronicaNehrenheim, EmmaOdlare, MonicaWaara, Sylvia
By organisation
School of Business, Society and EngineeringSchool of Sustainable Development of Society and Technology
In the same journal
Journal of Hazardous Materials
Engineering and Technology

Search outside of DiVA

GoogleGoogle Scholar

doi
pubmed
urn-nbn

Altmetric score

doi
pubmed
urn-nbn
Total: 189 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf