The use of bioassays for evaluating the toxicity of sewage sludge and sewage sludge-amended soil |
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| Authors: | Email author" target="_blank">Svetlana?Yu?SelivanovskayaEmail author Venera?Z?Latypova |
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| Institution: | (1) Department of Geology and Geophysics, Indian Institute of Technology, 721302 Kharagpur, India;(2) Department of Earth Sciences, University of Western Ontario, London, N6A 5B7, Canada; |
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| Abstract: | Background and Aims In soils, the most commonly mentioned hazardous substances are metals. One of the sources of its accumulation is the application
of sewage sludge. However, little information is available regarding the estimation of the toxicity of sewage sludge or soil
treated with sewage sludge, even by means of a battery of bioassays. In this study an evaluation of a battery of bioassays
was carried out for toxicity assessment of sewage sludge and sewage sludge-treated soil. The objectives of this study were
a) to compare the sensitivity of the different bioassays for the toxicity determination of sewage sludge contaminated with
metals and soil treated with this sewage sludge, b) to elaborate a procedure for the attribution of sewage sludge samples
to hazard classes based on the ecotoxicological data, and c) to evaluate the suitability of elutriate bioassays and microbial
toxicity tests for the assessment of sewage sludge-treated soil. |
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