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231224s2012 xx |||||o 00| ||eng c |
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|a 10.1016/j.wasman.2012.01.002
|2 doi
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|a pubmed25n0716.xml
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|a eng
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|a Sivula, Leena
|e verfasserin
|4 aut
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|a Toxicity of waste gasification bottom ash leachate
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|c 2012
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|a Date Completed 18.10.2012
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|a Date Revised 24.04.2012
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a Copyright © 2012 Elsevier Ltd. All rights reserved.
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|a Toxicity of waste gasification bottom ash leachate from landfill lysimeters (112 m(3)) was studied over three years. The leachate of grate incineration bottom ash from a parallel setup was used as reference material. Three aquatic organisms (bioluminescent bacteria, green algae and water flea) were used to study acute toxicity. In addition, an ethoxyresorufin-O-deethylase (EROD) assay was performed with mouse hepatoma cells to indicate the presence of organic contaminants. Concentrations of 14 elements and 15 PAH compounds were determined to characterise leachate. Gasification ash leachate had a high pH (9.2-12.4) and assays with and without pH adjustment to neutral were used. Gasification ash leachate was acutely toxic (EC(50) 0.09-62 vol-%) in all assays except in the algae assay with pH adjustment. The gasification ash toxicity lasted the entire study period and was at maximum after two years of disposal both in water flea (EC(50) 0.09 vol-%) and in algae assays (EC(50) 7.5 vol-%). The grate ash leachate showed decreasing toxicity during the first two years of disposal in water flea and algae assays, which then tapered off. Both in the grate ash and in the gasification ash leachates EROD-activity increased during the first two years of disposal and then tapered off, the highest inductions were observed with the gasification ash leachate. The higher toxicity of the gasification ash leachate was probably related to direct and indirect effects of high pH and to lower levels of TOC and DOC compared to the grate ash leachate. The grate ash leachate toxicity was similar to that previously reported in literature, therefore, confirming that used setup was both comparable and reliable
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Coal Ash
|2 NLM
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|a Water Pollutants, Chemical
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|a Oikari, Aimo
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|4 aut
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|a Rintala, Jukka
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Waste management (New York, N.Y.)
|d 1999
|g 32(2012), 6 vom: 17. Juni, Seite 1171-8
|w (DE-627)NLM098197061
|x 1879-2456
|7 nnns
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|g volume:32
|g year:2012
|g number:6
|g day:17
|g month:06
|g pages:1171-8
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|u http://dx.doi.org/10.1016/j.wasman.2012.01.002
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