Bioelectrochemically Enhanced Degradation of Bisphenol S: Mechanistic Insights from Stable Isotope-assisted Investigations

Overview

Journal iScience

Publisher Cell Press

Date 2021 Jan 25

PMID 33490921

Citations 1

Authors

Rui Hou

Lin Gan

Fengyi Guan

Yi Wang

Jibing Li

Shungui Zhou

Yong Yuan

Affiliations

Soon will be listed here.

Abstract

Electroactive microbes is the driving force for the bioelectrochemical degradation of organic pollutants, but the underlying microbial interactions between electrogenesis and pollutant degradation have not been clearly identified. Here, we combined stable isotope-assisted metabolomics (SIAM) and C-DNA stable isotope probing (DNA-SIP) to investigate bisphenol S (BPS) enhanced degradation by electroactive mixed-culture biofilms (EABs). Using SIAM, six C fully labeled transformation products were detected originating via hydrolysis, oxidation, alkylation, or aromatic ring-cleavage reactions from C-BPS, suggesting hydrolysis and oxidation as the initial and key degradation pathways for the electrochemical degradation process. The DNA-SIP results further displayed high C-DNA accumulation in the genera and from the EABs and indicated their ability in the assimilation of BPS or its metabolites. Collectively, network analysis showed that the collaboration between electroactive microbes and BPS assimilators played pivotal roles the improvement in bioelectrochemically enhanced BPS degradation.

Citing Articles

Advances and perspectives of using stable isotope probing (SIP)-based technologies in contaminant biodegradation.

Kim J, Hwangbo M, Shih C, Chu K Water Res X. 2023; 20:100187.

PMID: 37671037 PMC: 10477051. DOI: 10.1016/j.wroa.2023.100187.

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