State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, PR China.
Bioresour Technol. 2011 Dec;102(23):10886-91. doi: 10.1016/j.biortech.2011.09.038. Epub 2011 Sep 20.
Four materials, carbon felt cube (CFC), granular graphite (GG), granular activated carbon (GAC) and granular semicoke (GS) were tested as packed anodic materials to seek a potentially practical material for microbial fuel cells (MFCs). The microbial community and its correlation with the electricity generation performance of MFCs were explored. The maximum power density was found in GAC, followed by CFC, GG and GS. In GAC and CFC packed MFCs, Geobacter was the dominating genus, while Azospira was the most populous group in GG. Results further indicated that GAC was the most favorable for Geobacter adherence and growth, and the maximum power densities had positive correlation with the total biomass and the relative abundance of Geobacter, but without apparent correlation with the microbial diversity. Due to the low content of Geobacter in GS, power generated in this system may be attributed to other microorganisms such as Synergistes, Bacteroidetes and Castellaniella.
四种材料，即碳纤维毡（CFC）、粒状石墨（GG）、粒状活性炭（GAC）和粒状半焦（GS），被测试为填充阳极材料，以寻找一种用于微生物燃料电池（MFC）的潜在实用材料。研究了微生物群落及其与 MFC 发电性能的相关性。发现最大的功率密度出现在 GAC 中，其次是 CFC、GG 和 GS。在 GAC 和 CFC 填充的 MFC 中，优势属为 Geobacter，而在 GG 中最常见的是 Azospira。结果进一步表明，GAC 最有利于 Geobacter 的附着和生长，最大功率密度与总生物量和 Geobacter 的相对丰度呈正相关，但与微生物多样性没有明显的相关性。由于 GS 中 Geobacter 的含量较低，该系统产生的电量可能归因于其他微生物，如 Synergistes、Bacteroidetes 和 Castellaniella。
