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4. Ecotoxicological evaluation of a fish farming effluent treated by Fenton oxidation and coagulation process.

Author

Gomes, Lúcio M., Silva, Jaqueline M., Duarte, José L. S., Tavares, Mariana G., Santos, Elton L., Machado, Sonia S., Tonholo, Josealdo, and P. S. Zanta, Carmem L.

Subjects
FISH farming, FENTON'S reagent, BIOCHEMICAL oxygen demand, COAGULATION, SUSPENDED solids, CHEMICAL oxygen demand, OXIDATION
Abstract

This study has evaluated the efficiency of Fenton process followed by coagulation to treat real effluent from fish farm. Fenton obtained Chemical Oxygen Demand and turbidity removal of 48% at (0.5 mg L−1 Fe2+ and 10 mmol H2O2). Fenton followed by coagulation reduced COD and turbidity by almost 100%. The process also decreased the concentrations of suspended solids, phosphate, nitrate, Biological Oxygen Demand, and nitrite. Ecotoxicology test indicated that the effluent treated with 0.5 mmol L−1 Fe2+ in 10 mmol L−1 H2O2 displayed the lowest toxicity. These findings can indicate an environmental friendly alternative to treat fish farm effluent. [ABSTRACT FROM AUTHOR]

Published
2020
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