Synergistic material-microbe interface toward deeper anaerobic defluorination
成果类型：
Article
署名作者：
Che, Shun; Guan, Xun; Rodrigues, Roselyn; Yu, Yaochun; Xie, Yongchao; Liu, Chong; Men, Yujie
署名单位：
University of California System; University of California Riverside; University of Illinois System; University of Illinois Urbana-Champaign; University of California System; University of California Los Angeles; University of California System; University of California Los Angeles; Stanford University; Gonzaga University; Swiss Federal Institutes of Technology Domain; Swiss Federal Institute of Aquatic Science & Technology (EAWAG)
刊物名称：
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
ISSN/ISSBN：
0027-12569
DOI：
10.1073/pnas.2400525121
发表日期：
2024-07-30
关键词：
polyfluoroalkyl substances
perfluoroalkyl substances
carboxylic-acids
degradation
environment
GROWTH
摘要：
Per- and polyfluoroalkyl substances (PFAS), particularly the perfluorinated ones, are recalcitrant to biodegradation. By integrating an enrichment culture of reductive defluorination with biocompatible electrodes for the electrochemical process, a deeper defluorination of a C6- perfluorinated unsaturated PFAS was achieved compared to the biological or electrochemical system alone. Two synergies in the bioelectrochemical system were identified: i) The in- series microbial- electrochemical defluorination and ii) the electrochemically enabled microbial defluorination of intermediates. These synergies at the material-microbe interfaces surpassed the limitation of microbial defluorination and further turned the biotransformation end products into less fluorinated products, which could be less toxic and more biodegradable in the environment. This material- microbe hybrid system brings opportunities in the bioremediation of PFAS driven by renewable electricity and warrants future research on mechanistic understanding of defluorinating and electroactive microorganisms at the material-microbe interface for system optimizations.