Indexed by:期刊论文

Date of Publication:2018-12-01

Journal:BIORESOURCE TECHNOLOGY

Included Journals:PubMed、SCIE、Scopus

Volume:270

Page Number:554-561

ISSN No.:0960-8524

Key Words:Bioelectrochemical system; MFC; VOCs degradation; Composite membrane electrode; Photo-electrocatalysis; Electricity generation

Abstract:An efficient and cost-effective bio-photo-electro-catalytic reactor (BPEC) was developed, it combined bio-anode with TiO2 photo-electro-catalytic air cathode and could remove rapidly model gas phase VOC ethyl acetate (EA) and generate electricity simultaneously. This BPEC system exhibited a synergistic effect between the photoelectro-catalysis and microbial fuel cell (MFC) bio-electrochemical process. Calculated kinetic constant of the BPEC system (0.085 min(-1)) was twice the sum of those of photocatalysis (only electrolyte in the anode, without microbes, 0.033 min(-1)) and MFC (no photocatalysis, 0.010 min(-1)) systems. Compared to BPEC with proton exchange membrane (PEM) separator (59.6 mW/cm(2)), the system with polyvinylidene fluoride (PVDF) membrane had a higher EA degradation rate and power generation (92.8 mW/cm(2)). A lower external resistance resulted in a faster EA degradation rate. This report provides a new platform for treating other kinds of gas pollutants via integrated bio-electrochemical and gas-solid photo-electro-catalytic reactions, with energy generation and conversions.