Department of Biochemistry and Applied Biosciences, Faculty of Agriculture, University of Miyazaki, Miyazaki 889-2192, Japan.
Department of Civil and Environmental Engineering, Faculty of Engineering, University of Miyazaki, Miyazaki 889-2192, Japan.
J Biosci Bioeng. 2019 Jul;128(1):56-63. doi: 10.1016/j.jbiosc.2018.12.015. Epub 2019 Feb 6.
Electricity generation and treatment of sweet potato-shochu waste, acidic and organic-rich slurry, was examined using cassette-electrode microbial fuel cells (CE-MFCs). Among CE-MFCs with raw (73 g-chemical oxygen demand chromium COD/L) and different concentration of diluted sweet potato-shochu waste (0.5, 1, 5, 10, and 20 g-COD/L) without pH control, the maximum power density (1.2 W/m) and COD removal efficiency (67.4 ± 1.8%) were observed in the CE-MFCs with 10 g-COD/L shochu waste. The concentration of organic acid was decreased to below the quantification limits during the 9-day operation in the CE-MFC with 10 g-COD/L shochu waste. During the same period, the electrolyte pH was increased from 4.2 to 6.6. Microbial community analysis revealed that the genus Clostridium (75.4%) was predominant in the CE-MFCs with raw shochu waste, whereas Bacteroides (65.3%) and Clostridium (12.1%) were predominant in the CE-MFCs with 10 g-CODCr/L shochu waste.
利用盒式电极微生物燃料电池（CE-MFC）对甘薯烧酒废水（酸性且富含有机物的浆液）进行发电和处理。在未进行 pH 控制的情况下，原始（73 g-化学需氧量铬 COD/L）和不同浓度稀释的甘薯烧酒废水（0.5、1、5、10 和 20 g-COD/L）的 CE-MFC 中，CE-MFC 中 10 g-COD/L 烧酒废水中观察到最大的功率密度（1.2 W/m）和 COD 去除效率（67.4 ± 1.8%）。在 CE-MFC 中，10 g-COD/L 烧酒废水运行 9 天期间，有机酸浓度降低至定量限以下。在此期间，电解液 pH 值从 4.2 增加到 6.6。微生物群落分析表明，在含有原始烧酒废水的 CE-MFC 中，梭菌属（75.4%）占优势，而在含有 10 g-CODCr/L 烧酒废水的 CE-MFC 中，拟杆菌属（65.3%）和梭菌属（12.1%）占优势。
