Key Laboratory of Industrial Ecology and Environmental Engineering(MOE), School of Environmental Science &Technology, Dalian University of Technology, Dalian 116024, China.
Key Laboratory of Industrial Ecology and Environmental Engineering(MOE), School of Environmental Science &Technology, Dalian University of Technology, Dalian 116024, China; School of Food and Environment, Dalian University of Technology, Panjin 124221, China.
Bioresour Technol. 2018 Dec;270:554-561. doi: 10.1016/j.biortech.2018.09.041. Epub 2018 Sep 8.
An efficient and cost-effective bio-photo-electro-catalytic reactor (BPEC) was developed, it combined bio-anode with TiO 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 photo-electro-catalysis and microbial fuel cell (MFC) bio-electrochemical process. Calculated kinetic constant of the BPEC system (0.085 min) was twice the sum of those of photocatalysis (only electrolyte in the anode, without microbes, 0.033 min) and MFC (no photocatalysis, 0.010 min) systems. Compared to BPEC with proton exchange membrane (PEM) separator (59.6 mW/cm), the system with polyvinylidene fluoride (PVDF) membrane had a higher EA degradation rate and power generation (92.8 mW/cm). 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.
开发了一种高效且经济实用的生物光电催化反应器（BPEC），它将生物阳极与 TiO2 光电催化空气阴极结合在一起，可以同时快速去除模型气相 VOC 乙酸乙酯（EA）并发电。该 BPEC 系统展示了光电催化和微生物燃料电池（MFC）生物电化学过程之间的协同效应。BPEC 系统的计算动力学常数（0.085 min）是光电催化（仅在阳极中有电解质，没有微生物，0.033 min）和 MFC（没有光电催化，0.010 min）系统的动力学常数之和的两倍。与带有质子交换膜（PEM）隔板的 BPEC（59.6 mW/cm）相比，带有聚偏二氟乙烯（PVDF）隔板的系统具有更高的 EA 降解率和发电效率（92.8 mW/cm）。较低的外部电阻导致 EA 降解速率更快。本报告为通过集成的生物电化学和气固光电催化反应处理其他类型的气体污染物提供了一个新的平台，同时实现了能量的产生和转化。
