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Hazard assessment of sediments from a wetland system for treatment of landfill leachate using bioassays
School of Sustainable Development of Society and Technology, Mälardalen University, Västerås, Sweden.
School of Sustainable Development of Society and Technology, Mälardalen University, Västerås, Sweden.
School of Sustainable Development of Society and Technology, Mälardalen University, Västerås, Sweden.
Man-Technology-Environment Research Center, School of Science and Technology, Örebro University, Örebro, Sweden.
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2013 (English)In: Ecotoxicology and Environmental Safety, ISSN 0147-6513, E-ISSN 1090-2414, Vol. 97, p. 255-262Article in journal (Refereed) Published
Abstract [en]

Four bioassays were used in this study for the hazard assessment of sediments from sediment traps and several ponds in a treatment wetland for landfill leachate at Atleverket, Sweden. In the 6-day solid phase microbiotest with the sediment-dwelling crustacean Heterocypris incongruens both acute and chronic effects were observed with a gradual decrease and loss of toxicity with treatment in the wetland system. Some samples showed a low toxicity in porewater and only one sample was weakly toxic in the whole sediment test when assessed with Aliivibrio fischeri (Vibro fischeri). No genotoxicity was detected in the umu test. The toxicity response in the H4IIE- luc test evaluating the presence of dioxin-like compounds was considerably higher in the samples from the sediment traps. The hazard of the sediment therefore appears to be highest in the sediment traps and pond 1 with the methods employed. The result indicates that the wetland system has a design supporting the concentration and sequestration of toxic substances in the first part of the wetland. Based upon the results we suggest that hazard assessment of sediments from other treatment wetlands for landfill leachate should be conducted. (c) 2013 Elsevier Inc. All rights reserved.

Place, publisher, year, edition, pages
Maryland Heights, MO: Elsevier, 2013. Vol. 97, p. 255-262
Keywords [en]
bioassay, genotoxicity, toxicity, tretment wetland, landfill leachate, sediment
National Category
Environmental Sciences related to Agriculture and Land-use
Identifiers
URN: urn:nbn:se:hh:diva-24322DOI: 10.1016/j.ecoenv.2013.08.010ISI: 000325039400034Scopus ID: 2-s2.0-84884210539OAI: oai:DiVA.org:hh-24322DiVA, id: diva2:683984
Available from: 2014-01-07 Created: 2014-01-07 Last updated: 2018-01-11Bibliographically approved

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Waara, Sylvia

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