Ecotoxicological evaluation of energetic byproducts

Ecotoxicological evaluation of energetic byproducts

Abstrakt

The topic of our study was evaluation of ecotoxicity of energetic by-products (EBPs) produced by the power industry. Samples of EBPs (Bed ash, Fly ash, Cinders, Product of the desulfurization) were supplied by four different anonymous energy producing companies. Information which had been provided concerned only characterization of fuels used by the power plant. EBP were subjected to ecotoxicological testing via direct contact tests and via testing of water leaches of these samples prepared in accordance with methodology described in valid Czech legislation on waste management. In contact arrangement tests on terrestrial organisms: Acute toxicity test and Avoidance test on soil organism earthworm (Eisenia fetida) and Plant root growth inhibition test on letuce and onion (Lactuca sativa and Allium cepa) were used. Luminescent bacteria test on Vibrio fischeri represented tests in aquatic arrangement and serves to testing of water leachates. It was found that tests in contact arrangement are very important for complex evaluation of negative effects of matrices entering the ecosystem. Water leachates from waste often underestimate negative effect of present water-insoluble compounds. Also the importance of test on luminescent bacteria Vibrio fischeri is not negligible, because this test provides additional information of effects on representatives of destruents as an important ecosystem function part. Bed ash, fly ash and product of the desulfurization exhibited various ecotoxicity in dependence on fuel composition. On the other hand cinder was almost in all test the least toxic; in some cases exhibits stimulation effects.

The topic of our study was evaluation of ecotoxicity of energetic by-products (EBPs) produced by the power industry. Samples of EBPs (Bed ash, Fly ash, Cinders, Product of the desulfurization) were supplied by four different anonymous energy producing companies. Information which had been provided concerned only characterization of fuels used by the power plant. EBP were subjected to ecotoxicological testing via direct contact tests and via testing of water leaches of these samples prepared in accordance with methodology described in valid Czech legislation on waste management. In contact arrangement tests on terrestrial organisms: Acute toxicity test and Avoidance test on soil organism earthworm (Eisenia fetida) and Plant root growth inhibition test on letuce and onion (Lactuca sativa and Allium cepa) were used. Luminescent bacteria test on Vibrio fischeri represented tests in aquatic arrangement and serves to testing of water leachates. It was found that tests in contact arrangement are very important for complex evaluation of negative effects of matrices entering the ecosystem. Water leachates from waste often underestimate negative effect of present water-insoluble compounds. Also the importance of test on luminescent bacteria Vibrio fischeri is not negligible, because this test provides additional information of effects on representatives of destruents as an important ecosystem function part. Bed ash, fly ash and product of the desulfurization exhibited various ecotoxicity in dependence on fuel composition. On the other hand cinder was almost in all test the least toxic; in some cases exhibits stimulation effects.

energetic by-products, ecotoxicity tests, contact tests, luminescence bacteria

energetic by-products, ecotoxicity tests, contact tests, luminescence bacteria

ZLÁMALOVÁ GARGOŠOVÁ, H.; KRÁL, P.

2017

30.11.2016

Environmental Research Institute, University of Highlandsand Islands, Thurso, Scotland, UK

Thurso

EMEC17 - The 17th European Meeting on Environmental Chemistry. Book of Abstracts

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68

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http://hdl.handle.net/