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Separation Science and Technology Volume 55, 2020 - Issue 16
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Coagulation

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

Lúcio M. Gomesa Tabuleiro do Martins, Institute of Federal University of Alagoas, Maceió-AL, BrazilView further author information
,
Jaqueline M. Silvaa Tabuleiro do Martins, Institute of Federal University of Alagoas, Maceió-AL, BrazilView further author information
,
José L. S. Duartea Tabuleiro do Martins, Institute of Federal University of Alagoas, Maceió-AL, Brazil;b Laboratorio de Processos (LaPro), Centro de Tecnologia, Universidade Federal de Alagoas, Maceió, AL, BrasilCorrespondence[email protected]
ORCID Iconhttps://orcid.org/0000-0001-5641-0648View further author information
ORCID Icon,
Mariana G. Tavaresa Tabuleiro do Martins, Institute of Federal University of Alagoas, Maceió-AL, BrazilView further author information
,
Elton L. Santosc Agricultural Sciences Center of Federal, University of Alagoas, Rio Largo, AL, BrazilView further author information
,
Sonia S. Machadoa Tabuleiro do Martins, Institute of Federal University of Alagoas, Maceió-AL, BrazilView further author information
,
Josealdo Tonholoa Tabuleiro do Martins, Institute of Federal University of Alagoas, Maceió-AL, BrazilView further author information
&
Carmem L. P. S. Zantaa Tabuleiro do Martins, Institute of Federal University of Alagoas, Maceió-AL, BrazilView further author information
 show all
Pages 2967-2976 | Received 06 Jan 2019, Accepted 29 Aug 2019, Published online: 04 Sep 2019
 
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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.

Acknowledgements

The authors thank Coordination for the Improvement of Higher Education (CAPES), the National Council for Scientific and Technological Development (CNPq - grant: 303630/2012-4), and the Foundation for Research Support of the State of Alagoas (FAPEAL) for financial support of this work.

Additional information

Funding

This work was supported by the Conselho Nacional de Desenvolvimento Científico e Tecnológico [303630/2012-4].

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