MFC逆转化CO2合成甲醇研究

微生物燃料电池(MFC)反应器是利用附着在阳极上的产氢微生物,在吸收烟气CO2的同时将CO2逆转化合成高附加值的生物合成燃料的装置。试验选用从牛粪中分离筛选出的梭状芽孢菌(Clostridium.sp)作为合成生物燃料的合成菌,将MFC反应装置接入电化学工作站进行CV测试,当发生还原反应时,在-0.5 V时出现还原峰,利用直流稳压电源恒电压电解,检测到合成的生物燃料为甲醇。在24 h时甲醇的积累量达到最大3.13 mmol/L；当CO2气体比例为15%时甲醇积累量最大,为2.98 mmol/L。在细菌接种量为1 mL时,甲醇积累量达到最大,为2.76 mmol/L。，最适条件下的CO2转化率为7.5%。

Microbial fuel cell reverses reduction of CO2 and methanol synthesis

Microbial fuel cell (MFC) reactor is attached to the use of hydrogen-producing microbial anode, while in the absorption of CO2, CO2 synthesis high value biofuel reversibly. Fusiform spore fungus(Clostridium. Sp), is choose and separated from cow dung for synthesizing biofuels. CV test proceed in MFC reactor by accessing electrochemical reaction workstation, when reduction reaction occurs, a reduction peak appeared at -0.5 V, and detected synthetic biofuel is methanol in the use of DC constant voltage electrolysis. The methanol cumulants come to maximum of 3.13 mmol/L at 24 h; when CO2 gas proportion is 15 %, the maximum methanol cumulants is 2.98 mmol/L. When bacterial inoculum is 1mL, the methanol cumulants reaches maximum of 2.76 mmol/L.The optimum conditions of CO2 conversion rate is 7.5%.