College of Environmental Science and Engineering, Hunan University, Changsha 410082, China.
Water Sci Technol. 2009;60(9):2399-404. doi: 10.2166/wst.2009.313.
A single-chamber, membrane-less and floating-cathode microbial fuel cells (MFC) was successfully started up using surplus sludge as fuel without adding carbohydrate after 20 days. The electricity generation of the MFC was investigated. The results showed that the obtained maximum voltage was 440.7 mV when external resistance was 1,000 Omega. There were four phases (rapid fall phase, stationary phase, fall phase and stationary phase of low voltage) in the periodic time of MFC, and the output voltage range of 150-300 mV lasted for 107 hours during stationary phase. In addition, the obtained maximum power density was 220.7 mW m(-2) and internal resistance was 368.13 Omega in the MFC. Consequently, surplus sludge could be used to generate electricity in MFC, which could provide a novel process for sludge recycling.
采用剩余污泥作为启动基质，无需额外添加碳源，成功启动了单室无膜漂浮阴极微生物燃料电池（MFC）。对 MFC 的发电性能进行了研究。结果表明，当外电阻为 1000 欧姆时，获得的最大电压为 440.7 mV。MFC 的周期时间内存在四个阶段（快速下降阶段、稳定阶段、下降阶段和低电压稳定阶段），在稳定阶段，输出电压范围为 150-300 mV 持续了 107 小时。此外，在 MFC 中获得的最大功率密度为 220.7 mW m(-2)，内阻为 368.13 欧姆。因此，剩余污泥可用于 MFC 发电，为污泥回收提供了一种新途径。
