title: Electrochemical treatment of shrimp farming effluent: role of electrocatalytic material.
abstract: This study investigated the electrochemical oxidation of organic matter present in shrimp farming effluent using three types of electrocatalytic materials: Ti/Ru0.34Ti0.66O2, Ti/Pt, and boron-doped diamond (BDD). An electrochemical cell with 300 mL under stirring agitation was used by applying 20, 40, and 60 mA cm-2. A Ti/Ru0.34Ti0.66O2anode showed a reduction of chemical oxygen demand (COD) about 84 % after 1 h of electrolysis, while at the same time, 71 % of COD decay was achieved at Ti/Pt. Conversely, only 71 % of COD was removed after 2 h with a BDD anode. Regarding the temperature effect, BDD showed better performances than those achieved for Ti/Ru0.34Ti0.66O2and Ti/Pt anodes during an electrochemical treatment of a shrimp farming effluent, obtaining 72 % of COD removal by applying 20 mA cm-2at 40 °C after 15 min. Energy consumption and cost were estimated in order to established the engineering applicability of this alternative process.
authors: Faculty of Natural and Exact Sciences, University of State of Rio Grande do Norte, Campus Central da UERN, CEP 59625-620, Mossoró, RN, Brazil.
authors: Francisco Leonardo Gomes
authors: FLG
authors: de Menezes
authors: Faculty of Natural and Exact Sciences, University of State of Rio Grande do Norte, Campus Central da UERN, CEP 59625-620, Mossoró, RN, Brazil.
authors: André Jailson Cabral
authors: AJC
authors: da Silva
authors: Institute of Chemistry, Federal University of Rio Grande do Norte, Campus Universitário s/n, CEP 59078-970, Natal, RN, Brazil.
authors: Carlos Alberto
authors: CA
authors: Martínez-Huitle
authors: Institute of Chemistry and Biotechnology, Federal University of Alagoas, Campus A.C. Simões, CEP 57072-970, Maceió, AL, Brazil.
authors: Carmem Lúcia Paiva Silva
authors: CLPS
authors: Zanta
authors: Faculty of Natural and Exact Sciences, University of State of Rio Grande do Norte, Campus Central da UERN, CEP 59625-620, Mossoró, RN, Brazil.
authors: Janete Jane Fernandes
authors: JJF
authors: Alves
authors: Faculty of Natural and Exact Sciences, University of State of Rio Grande do Norte, Campus Central da UERN, CEP 59625-620, Mossoró, RN, Brazil. suelycastro@uern.br.
authors: Suely Souza Leal
authors: SSL
authors: Castro
mesh_terms: D000818:Animals; D017756:Aquaculture; D055664:Electrochemical Techniques / Q000379:methods*; D010084:Oxidation-Reduction; D033561:Penaeidae; D062065:Wastewater / Q000032:analysis / Q000737:chemistry; D018508:Water Purification / Q000379:methods*
chemical_list: D062065:Wastewater
keywords: Active chlorine; Electrochemical oxidation; Shrimp farming effluent; Wastewater