Microbial electrochemical synergy: A mechanistic framework for enhanced bioelectrochemical remediation of halogenated organic pollutant in soil-water matrices.
AI summary
75% confidenceThis MEC study investigates Electrode-biofilm interface, Electron transfer efficiency, Halogenated organic pollutants. The research focuses on system optimization and characterization.
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Abstract
Bioelectrochemical systems (BESs) offer promising solutions for remediating halogenated organic pollutants (HOPs) in soil-water matrices. However, their practical efficiency is often constrained by inefficient "last nanometer" electron transfer from electrodes to reductive dehalogenases. Current understanding remains limited by reliance on functional resolution of microbial communities at the strain level, and insufficient understanding of electron flux allocation among competing metabolic pathways. This review introduces a conceptual framework of "Microbial Electrochemical Synergy", which systematically deciphers BESs performance through three dimensions: electron flow efficiency, functional microbial niche partitioning, and interfacial microenvironment characteristics. We revealed that: (1) the electrode-biofilm interface represents a critical rate-limiting step; (2) electron flux diversion to competing pathways (e.g., methanogenesis) significantly affects dehalogenation efficiency; and (3) interfacial microenvironment engineering holds untapped potential for enhancing microbial synergy and electron transfer. The unique value of this review lies in proposing an integrative mechanistic framework that synergizes machine learning, multi-omics, and synthetic biology tools to enable rational design and precise regulation of next-generation BES technologies. By bridging fundamental mechanisms with practical applications, this work aims to enhance the scalability and sustainability of BES-based strategies for enhanced HOPs remediation in complex soil-water matrices.