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Testes de toxicidade aguda através de bioensaios no extrato solubilizado dos resíduos classe II A - não inertes e classe II B - inertes / Acute toxicity tests by bioassays applied to the solubilized extracts of solid wastes class II A - non inerts and class II B - inerts
Rodrigues, Nébora Liz Vendramin Brasil; Pawlowsky, Urivald.
  • Rodrigues, Nébora Liz Vendramin Brasil; PUC-PR. Curitiba. BR
  • Pawlowsky, Urivald; UFPR. Curitiba. BR
Eng. sanit. ambient ; 12(1): 8-16, jan.-mar. 2007. tab
Article in Portuguese | LILACS | ID: lil-455464
RESUMO
A grande diversidade de substâncias potencialmente tóxicas contribuem para a deterioração do meio ambiente. O objetivo deste trabalho foi propor a utilização de bioensaios, através de testes de toxicidade aguda com Daphnia magna e Vibrio fischeri, como mais um parâmetro a ser analisado no extrato solubilizado dos resíduos que, segundo a NBR 10004/04 fossem classificados como classe II A - não inertes ou classe II B - inertes. Realizaram-se, também, testes de toxicidade no drenado dos aterros classe II A e II B. Verificou-se que a toxicidade foi constatada nos extratos solubilizados dos 18 resíduos analisados e que, apenas três das amostras estariam próprias para lançamento, ou seja os resíduos 04, 14 e 15. Já, a toxicidade encontrada no drenado dos aterros, ficou muito superior do que a toxicidade de cada extrato solubilizado analisado separadamente.
ABSTRACT
A great diversity of substances potencially toxic contributes to the deterioration of the environment. The aim of this research was to propose the use of bioassays using Daphnia magna and Vibrio fischeri, as another parameter to be analyzed in the solubilized extraction of waste according to NBR 10004/04 and classified as class II A - non inerts or class II B - inerts. Besides, another test was performed to measure the level of toxicity in the drainage of the landfill class II A and II B. It was verified that the toxicity found in the solubilized extracts of the 18 wastes analysed.Only 3 wastes (04, 14 and 15) were within the emission limits. On the other hand the toxicity found in the drainage of the landfill, from which all the samples came from, was much higher than the individual one.
Subject(s)
Full text: Available Index: LILACS (Americas) Main subject: Biological Assay / Percolation / Wastewater Disposal / Urban Solid Waste Classification / Environmental Pollution / Industrial Waste Language: Portuguese Journal: Eng. sanit. ambient Journal subject: Environmental Health / Public Health Year: 2007 Type: Article Affiliation country: Brazil Institution/Affiliation country: PUC-PR/BR / UFPR/BR

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Full text: Available Index: LILACS (Americas) Main subject: Biological Assay / Percolation / Wastewater Disposal / Urban Solid Waste Classification / Environmental Pollution / Industrial Waste Language: Portuguese Journal: Eng. sanit. ambient Journal subject: Environmental Health / Public Health Year: 2007 Type: Article Affiliation country: Brazil Institution/Affiliation country: PUC-PR/BR / UFPR/BR