Artigo de peri??dico
In vitro and in vivo toxicity of coal fly Ash Lechatee
Registro en:
2317-9643
1
13
10.5132/eec.2018.01.08
0000-0002-2517-7772
0000-0003-1618-0264
Sem Percentil
Sem Percentil CiteScore
Autor
DAMASCENO, K.C.
CAVALCANTE, A.K.
MAZIERO, J.S.
MARTINI, G.A.
ORMENIO, M.B.
MAMEDE, F.C.
MIRANDA, C.S.
CAMPELLO, F.A.
IZIDORO, J.C.
ROGERO, S.O.
FUNGARO, D.A.
LOPES-FERREIRA, M.
ROGERO, J.R.
Resumen
Coal Fly ash is a major solid waste from coal-fired power stations. In Brazil, more than 4 million tons per year of fly ash are generated and only 30% is applied as raw material for cement and concrete production. The remaining is disposed in on-site ponds, nearby abandoned or active mine sites and landfills. The inadequate disposal of fly ash may pose a significant risk to the environment due to the possible leaching of hazardous pollutants into the surrounding soil and groundwater. A combination of leaching tests, cytotoxicity and ecotoxicological assays were used in this studyin order toevaluate the possible adverse effects of coal fl y ash in non-target organisms. The sample was collected from coal-fi red power plant located in Southern Brazil and the coal fly ash was submitted to a leaching procedure using USEPA SW 864 Method 1311. The leachate was prepared in six dilutions: 1.56%, 3.12%, 6.25%, 12.5%, 25% and 50%. Acute toxicity tests were performed on NCTC clone 929 (CCIAL-020) culture cells by neutral red uptake cytotoxicity method; acute ecotoxicity usingDaphnia similisand Danio rerio embryos according to ABNT NBR 12713 and OECD 236, respectively were employed. The cytotoxicity index (CI50) obtained was 33%; the EC50of D. similis after 48 h of exposure to the leachate was 7.25% and the LC50of D. rerio after 96 h of exposure was 4.39%. The results of these bioassays indicated toxicity of the coal fly ash leachate toward exposed organisms.