Performance of an up-flow anaerobic bio-electrochemical system (UBES) for treating sulfamethoxazole (SMX) antibiotic wastewater. (June 2020)

• Record Type: Journal Article
• Authors: Hu, Dongxue; Min, Hongchao; Wang, Hongcheng; Zhao, Yuanyi; Cui, Yubo; Wu, Pan; Ge, Hui; Luo, Kongyan; Zhang, Lufeng; Liu, Wenyu; Wang, Aijie
• Is Part Of: Bioresource technology. Volume 305(2020)
• Publication Date: 2020-06
• Subjects: Bio-electrochemical system (BES) -- Sulfamethoxazole (SMX) -- Volatile fatty acid (VFA) -- Extracellular polymeric substances (EPS) -- Mathematical model; Biomass -- Periodicals; Biomass energy -- Periodicals; Bioremediation -- Periodicals; Agricultural wastes -- Periodicals; Factory and trade waste -- Periodicals; Organic wastes -- Periodicals; Bioénergie -- Périodiques; Déchets agricoles -- Périodiques; Déchets industriels -- Périodiques; Déchets organiques -- Périodiques; Déchets (Combustible) -- Périodiques; 662.88
• DOI: 10.1016/j.biortech.2020.123070
• Languages: English
• ISSNs: 0960-8524

Abstract

Graphical abstract: Highlights: Removal of SMX were compared in open-circuit and closed-circuit UBES. Closed-circuit UBES can withstand more than 3 times LR than open-circuit UBES. Ability to resist toxic substance stress was strengthened in closed-circuit UBES. Mathematical models of degradation on pollutant were developed. Abstract: This paper focused on the feasibility and performance of an up-flow anaerobic bio-electrochemical system (UBES) for treating sulfamethoxazole (SMX) antibiotic wastewater at different COD loading rates (LRs) from 2.02 ± 0.13 to 6.09 ± 0.14 kgCOD/(m 3 ·d). Open-circuit UBES had a lower average COD removal rate of 62.4 ± 4.7% in Run2, and the accumulation of volatile fatty acid (VFA) was occurred. However, closed-circuit UBES can alleviate the accumulation of VFA (which was decreased from 720.4 to 102.4 mg/L), the highest average COD, SMX removal rates were 85.7 ± 3.2% and 73.7 ± 2.0%, respectively. The closed-circuit UBES can withstand more than 3 times LR than open-circuit UBES, which proved that the ability of microorganisms to resist toxic substance stress was strengthened. And the mathematical models for pollutants removal rate were established and well interpreted the results, which also can guide the operation of UBES.