Romero-Soto, Itzel; García-Gómez, Celestino; Leyva-Soto, Luis Alonso; Napoles-Armenta, Juan; Concha-Guzman, María; Diaz-Tenorio, Lourdes Mariana; 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.
pp. 591-604.
DOI: 10.2166/wst.2021.632.
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: | 04 nov. 2022 19:46 |
| URI: | https://espace.inrs.ca/id/eprint/12684 |
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