Interdisciplinary Research Organization, University of Miyazaki, Miyazaki 889-1692, Japan.
J Biosci Bioeng. 2013 Nov;116(5):610-5. doi: 10.1016/j.jbiosc.2013.05.011. Epub 2013 Jun 10.
Cassette-electrode microbial fuel cells (CE-MFCs) are efficient and scalable devices for electricity production from organic waste. Previous studies have demonstrated that CE-MFCs are capable of generating electricity from artificial wastewater at relatively high efficiencies. In this study, a single-cassette CE-MFC was constructed, and its capacity for electricity generation from cattle manure suspended in water (solid to water ratio of 1:50) was examined. The CE-MFC reactor was operated in batch mode for 49 days; electricity generation became stable 2 weeks after initiating the operation. The maximum power density was measured at 16.3 W m⁻³ on day 26. Sequencing analysis of PCR-amplified 16S rRNA gene fragments obtained from the original manure and from anode biofilms suggested that Chloroflexi and Geobacteraceae were abundant in the anode biofilm (29% and 18%, respectively), whereas no Geobacteraceae sequences were detected in the original manure sample. The results of this study suggest that CE-MFCs can be used to generate electricity from water-suspended cattle manure in a scalable MFC system.
盒式电极微生物燃料电池（CE-MFC）是一种从有机废物中高效且可扩展地生产电能的装置。先前的研究已经证明，CE-MFC 能够从人工废水中以相对较高的效率发电。在这项研究中，构建了一个单盒 CE-MFC，并检查了其从悬浮在水中的牛粪（固液比为 1:50）中发电的能力。CE-MFC 反应器以批量模式运行了 49 天；在运行两周后，发电变得稳定。在第 26 天，测量到的最大功率密度为 16.3 W m ⁻³ 。从原始粪便和阳极生物膜中扩增的 16S rRNA 基因片段的测序分析表明，阳极生物膜中丰富的是绿弯菌门（29%）和地杆菌科（18%），而在原始粪便样本中未检测到地杆菌科序列。这项研究的结果表明，CE-MFC 可以在可扩展的 MFC 系统中从水悬浮的牛粪中发电。
