Enhancing Roxarsone Degradation and in Situ Arsenic Immobilization Using a Sulfate-Mediated Bioelectrochemical System

Rui Tang, Henning Prommer, Shoujun Yuan, Wei Wang, Jing Sun, James Jamieson, Zhen Hu Hu

Research output: Contribution to journalArticlepeer-review

10 Citations (Web of Science)

Abstract

Roxarsone (ROX) is widely used in animal farms, thereby producing organoarsenic-bearing manure/wastewater. ROX cannot be completely degraded and nor can its arsenical metabolites be effectively immobilized during anaerobic digestion, potentially causing arsenic contamination upon discharge to the environment. Herein, we designed and tested a sulfate-mediated bioelectrochemical system (BES) to enhance ROX degradation and in situ immobilization of the released inorganic arsenic. Using our BES (0.5 V voltage and 350 μM sulfate), ROX and its metabolite, 4-hydroxy-3-amino-phenylarsonic acid (HAPA), were completely degraded within 13-22 days. In contrast, the degradation efficiency of ROX and HAPA was

Original languageEnglish
Pages (from-to)393-401
Number of pages9
JournalEnvironmental Science and Technology
Volume55
Issue number1
DOIs
Publication statusPublished - 5 Jan 2021

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