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Efficiency of an up-flow Anaerobic Sludge Blanket reactor coupled with an electrochemical system to remove chloramphenicol in swine wastewater.

Romero-Soto, Itzel, García-Gómez, Celestino, Leyva-Soto, Luis Alonso, Napoles-Armenta, Juan, Concha-Guzman, María, Díaz-Tenorio, Lourdes, Ulloa-Mercado, Ruth Gabriela, Drogui, Patrick ORCID: https://orcid.org/0000-0002-3802-2729, Buelna, Gerardo, Rentería-Mexia, Ana María et Gortáres-Moroyoqui, Pablo (2021). Efficiency of an up-flow Anaerobic Sludge Blanket reactor coupled with an electrochemical system to remove chloramphenicol in swine wastewater. Water Science and Technology , vol. 85 , nº 2. p. 591-604. DOI: 10.2166/wst.2021.632.

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Résumé

The application and design of treatment systems in wastewater are necessary due to antibiotics' potential toxicity and resistant genes on residual effluent. This work evaluated a coupled bio-electrochemical system to reduce chloramphenicol (CAP) and chemical oxygen demand (COD) on swine wastewater (SWW). SWW characterization found CAP of <10 μg/L and 17,434 mg/L of COD. The coupled system consisted of preliminary use of an Up-flow Anaerobic Sludge Blanket Reactor (UASB) followed by electrooxidation (EO). The UASB reactor (primary stage) was operated for three months at an organic load of 8.76 kg of COD/m³d and 50 mg CAP/L as initial concentration. In EO, we carried out a 2² (time operation and intensity) factorial design with a central composite design; we tried two Ti cathodes and one anode of Ti/PbO₂. Optimal conditions obtained in the EO process were 240 min of operation time and 1.51 A of current intensity. It was possible to eliminate 44% of COD and 64.2% of CAP in the preliminary stage. On bio-electrochemicals, total COD and CAP removal were 82.35 and >99.99%, respectively. This coupled system can be applied to eliminate antibiotics and other organic pollutants in agricultural, industrial, municipal, and other wastewaters.

Type de document: Article
Mots-clés libres: chloramphenicol; degradation; electrooxidation; organic matter; UASB; wastewater
Centre: Centre Eau Terre Environnement
Date de dépôt: 23 juin 2022 14:47
Dernière modification: 23 juin 2022 14:47
URI: https://espace.inrs.ca/id/eprint/12684

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