Evaluation of sugar-cane vinasse treated with Pleurotus sajor-caju utilizing aquatic organisms as toxicological indicators.
Toxicity tests with aquatic organisms constitute an effective tool in the evaluation, prediction and detection of the potential effect of pollutants from environmental samples in living organisms. Vinasse, a highly colored effluent, is a sub-product rich in nutrients, mainly organic matter, with high pollutant potential when disposed in the environment. Assays for vinasse decolorization were performed using the fungus Pleurotus sajor-caju CCB020 in vinasse biodegradation study, were occurred reductions of 82.8% in COD, 75.3% in BOD, 99.2% in the coloration and 99.7% in turbidity. The vinasse toxicity reduction was determined by the exposition to the following organisms: Pseudokirchneriella subcapitata, Daphnia magna, Daphnia similis and Hydra attenuata. This work concluded that the systematic combination of P. sajor-caju and vinasse can be applied in the bioprocess of color reduction and degradation of complex vinasse compounds, with reduction in the toxicity and improving its physical-chemical properties.
Ferreira
Luiz F Romanholo
LF
Centro de Energia Nuclear na Agricultura/USP, Piracicaba, Caixa Postal 96. Av. Centenário, 303, SP, Brazil.
Aguiar
Mario M
MM
Messias
Tamara G
TG
Pompeu
Georgia B
GB
Lopez
Ana M Queijeiro
AM
Silva
Daniel P
DP
Monteiro
Regina T
RT
D000818:Animals; D001673:Biodegradation, Environmental; D000460:Chlorophyta / Q000187:drug effects* / Q000378:metabolism; D003621:Daphnia / Q000187:drug effects / Q000378:metabolism; D004785:Environmental Pollutants / Q000032:analysis* / Q000378:metabolism / Q000633:toxicity*; D006829:Hydra / Q000187:drug effects / Q000378:metabolism; D007220:Industrial Waste / Q000032:analysis; D007448:Invertebrates / Q000187:drug effects* / Q000378:metabolism; D020076:Pleurotus / Q000378:metabolism*; D031786:Saccharum / Q000737:chemistry / Q000378:metabolism*; D018675:Toxicity Tests / Q000379:methods*
D004785:Environmental Pollutants; D007220:Industrial Waste