MFC中瘤胃微生物降解纤维素产电的研究

为了解除微生物燃料电池中阴极高氧化物对阳极微生物的毒害作用,本研究采用焦性没食子酸厌氧培养法,从牛瘤胃液中分离纯化出纤维素分解菌和产甲烷菌。并以两种菌株生理学研究为基础,在阴阳极分别采用纤维素分解菌和产甲烷菌催化。产电结果表明:200mL纤维素分解菌株单菌电池,以CuSO4为阴极电子受体时,最大电池电位差达到1.2V,最大输出电压为1.03V。在相同条件下,用甲烷菌代替CuSO4作为阴极电子受体,200mL菌液能产生1.08V的电池电位差和1.04V的最大输出电压,可持续产电180h。

Cellulose Converted into Electricity in MFC by Rumen Bacteria

The purpose of this study was to eliminate the mediator toxicity of catholyte in microbial fuel cells. Anaerobic culture with pyrogallic acid was used to isolate cellulose - degenenerating and methanogenic microorganisms from the tureen fluid. The performance of two - strain microbial fuel cell was discussed based on their characters, and in the cathode and anode, the cellulose -degenenerating and methanogenic microorganisms were used as catalyst respectively. The results indicated： when using CuSO4 as catholyte and cellulose -degenenerating microorganism as anode, the maximum output voltage and potential were 1.03V and 1.2V within 200mL broth respectively; while methanogenic microorganism was used in cathode instead of CuSO4, the maximum output voltage and potential could also get to 1.04V and I. 08V at the same conditions respectively, and it could produce electricity for 180 hours continually.