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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的同时将其逆转化合成高附加值的生物合成燃料的装置。实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循环伏安测试,当发生还原反应时,在-0.5V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24h时甲醇的积累量达到最大3.13mmol/L;当CO2气体比例为15%时甲醇积累量最大,为2.98mmol/L。在细菌接种量为1m L时,甲醇积累量达到最大,为2.76mmol/L,最适条件下的CO2转化率为7.5%。
Microbial fuel cell (MFC) reactors are devices that use hydrogen-producing microorganisms attached to anodes to reverse convert CO 2 to high value-added biosynthetic fuels while absorbing CO 2. Clostridium sp. Was screened from cow dung as a synthetic bacterium for biofuel synthesis. The MFC reaction device access electrochemical workstation cyclic voltammetry test, when the reduction reaction, the reduction peak appears at -0.5V. The use of DC constant voltage electrolysis of constant voltage electrolysis, the synthesis of biofuel was detected as methanol, the methanol accumulation reached a maximum of 3.13mmol / L 24h; when the CO2 gas ratio of 15% methanol accumulation was the largest, 2.98mmol / L . Methanol accumulation reached the maximum at 2.76 mmol / L at a bacterial inoculum of 1 mL, with a CO2 conversion of 7.5% under the optimum conditions.