Study On Organic Wastewater Disposal By Single-chamber Microbial Fuel Cell

This paper introduces the development of Microbial Fuel Cell, the latest research process and the focus of this area nowadays. .The cathode electrode and structure of the single-chamber fuel cell were modified, while the single-chamber fuel cell was seeded with anaerobic sludge and with the self-made cathode(Ti-β-PbO2),which was set up on the base of the dual chambers microbial fuel cell. The mechanism of electricity production and influencing factor of the fuel performance were discussed.The results show that: this study investigates the process of electricity production integrated with COD reduction by use of two comparative substrates glucose and beef-grease. Sustained power generation was recorded as high as 120 mW/m2 in beef-MFC, and as high as 98mW/m2 in glucose-MFC. The COD reduction of beef-grease reaching 83%, and glucose-MFC reaching 79% at running time 15 days.But the COD removal rate of glucose is much higher than that of beef-grease. It was founded that the more cathode area, the more power output, and the more substrate consistency the more power output and the more time of steadily running. It was proved that the single-chamber microbial fuel cell by use of the self-made cathode(Ti-β-PbO2)was feasible. This kind of fuel cell could reduce cost and volume, and had the advantage of simple operation. So the further application of this technique would have a promising future. The effect of operational parameters to the power output of a microbial fuel cell was partially tested in this thesis. The bottleneck of the microbial fuel cell was pointed out and suggestions to improve the performance of microbial fuel cells were given. Work presented in this thesis would certainly promote the development of microbial fuel cells.