An enriched electroactive homoacetogenic biocathode for the microbial electrosynthesis of acetate through carbon dioxide reduction
作者： Gunda Mohanakrishna , Jai Sankar Seelam , Karolien Vanbroekhoven , Deepak Pant
DOI: 10.1039/C5FD00041F
关键词: Auxiliary electrode 、 Anode 、 Electrosynthesis 、 Chemistry 、 Inorganic chemistry 、 Microbial electrosynthesis 、 Electrochemical reduction of carbon dioxide 、 Graphite 、 Electrode 、 Cathode
摘要: In the direction of generating value added chemicals from carbon dioxide (CO2) reduction through microbial electrosynthesis (MES), considering crucial impact electrode material for biofilm development and electron delivery, an attempt was made in this study to evaluate efficiency two different materials as biocathodes their respective output terms electrosynthesis. The is a key component MES process. Several electrodes such platinum, graphite foil, dimentionally stable anode (DSA) rod, VITO-CoRE™ derived were tested suitability ideal combination three cell setup. Bicarbonates (the dissolved form CO2) reduced acetate by selectively developed biocathode under mild applied cathodic potential −400 mV (vs. SHE) 500 mL single chamber cells operating more than four months. Among combinations evaluated, VITO-CoRE™-PL (VC-IS, plastic inert support) cathode VITO-CoRE™-SS (VC-SS, stainless steel metal counter showed higher production (4127 mg L−1) with volumetric rate 0.569 kg per m3 d rod (1523 0.206 d. Contrary efficiencies, coulombic second (40.43%) first (29.91%). Carbon conversion VC-IS (90.6%) (82.0%).
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