生物膜电极在以苯酚为燃料的微生物燃料电池中的应用

以苯酚为燃料, 生物膜电极为负极, Ti/SnO₂-Sb₂O₅/PbO₂电极为正极, 构建了双室微生物燃料电池. 利用微电流驯化法和自然驯化法分别制备了生物膜电极, 研究了微生物的挂膜方法、 挂膜时间和负极基底材料种类对微生物燃料电池产电能力的影响. 结果表明, 微电流驯化法优于自然驯化法, 微电流驯化法制备的生物膜电极更利于电池的产电; 微生物的挂膜时间为8 d时, 电池的产电能力最高, 其最大输出功率密度达到39 mW/m²; 不同基底材料生物膜电极所组建的微生物燃料电池产电能力高低顺序为碳毡>石墨>钛网>泡沫钛.

Application of Biofilm Electrode in Microbial Fuel Cell with Phenol as the Fuel

A dual-chamber microbial fuel cell(MFC) which used phenol as the fuel, biofilm electrode as the negative electrode, Ti/SnO2-Sb2O5/PbO2 electrode as the positive electrode was set up. The biofilm electrodes were prepared by micro-current culture and natural culture methods, respectively. Effects of the microbial culture methods, biofilm formation time and substrate materials on the electricity generation ability of the MFC were investigated. The experimental results showed that the micro-current culture method was better than natural culture method, the biofilm electrodes which were prepared by micro-current culture method had higher electricity generation ability than those prepared by natural culture method. When the biofilm formation time was 8 d, the MFC had the best electricity generation ability, and its maximum power density was 39 mW/m2. The order of the substrate materials of which the MFC with higher to lower electricity generation ability was carbon felt>graphite>titanium mesh>foam titanium.