Hong Seok Won, Chang In Seop, Choi Yong Su, Chung Tai Hak
Center for Environmental Technology Research, Korea Institute of Science and Technology, P.O. Box 131, Cheongryang, Seoul 130-650, Republic of Korea.
Bioresour Technol. 2009 Jun;100(12):3029-35. doi: 10.1016/j.biortech.2009.01.030. Epub 2009 Feb 28.
The aim of this study was to evaluate limiting factors affecting electricity output from sediment microbial fuel cells (sediment MFCs). In laboratory tests, various factors likely to be encountered in field application were divided into controllable and uncontrollable ones. Based on the findings, it could be suggested that the sediment MFCs can be operated with an anode to cathode area ratio of at least 5:1 and at high external loads (1000 ohms) when the cathode is closely placed to the anode, though DO concentration at the cathode must be kept above 3 mg/l. Furthermore, no significant effect on current production over a prolonged period was observed within the sediment temperature range of 20-35 degrees C, but was negatively affected by lower temperatures (10 degrees C). These observations provide important factors with respect to the construction and operation of sediment MFCs at field sites, which will aid in maximizing electricity output.
本研究的目的是评估影响沉积物微生物燃料电池（沉积物MFC）电力输出的限制因素。在实验室测试中，将现场应用中可能遇到的各种因素分为可控和不可控因素。基于这些发现，可以提出，当阴极靠近阳极放置时，沉积物MFC可以在阳极与阴极面积比至少为5:1且外部负载较高（1000欧姆）的情况下运行，不过阴极处的溶解氧浓度必须保持在3毫克/升以上。此外，在20-35摄氏度的沉积物温度范围内，长时间内对电流产生没有显著影响，但在较低温度（10摄氏度）下会受到负面影响。这些观察结果为现场沉积物MFC的构建和运行提供了重要因素，这将有助于实现电力输出最大化。
