Journal
JOURNAL OF BIOSCIENCE AND BIOENGINEERING
Volume 133, Issue 5, Pages 467-473Publisher
SOC BIOSCIENCE BIOENGINEERING JAPAN
DOI: 10.1016/j.jbiosc.2022.02.004
Keywords
Microbial fuel cell; Wastewater treatment; Shochu waste; Microbial community; Clostridiaceae; Acetobacteraceae
Funding
- Miyazaki Prefectural Industrial Support Foundation
- University of Miyazaki
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This study examined the treatment of barley-shochu waste combined with electricity generation using stacked microbial fuel cells (SMFCs). The results showed that the maximum chemical oxygen demand removal efficiency and maximum power density were achieved, and the concentrations of acetic acid, citric acid, ethanol, and sugar changed during the operation. Microbial community analysis revealed the dominant microorganism families involved in organic waste decomposition and electricity generation in the SMFCs.
The treatment of barley-shochu waste combined with electricity generation was examined using stacked microbial fuel cells (SMFCs). The maximum chemical oxygen demand (CODCr) removal efficiency and maximum power density were achieved at 36.7 +/- 1.1% and 43 +/- 0.2 W m(-3) (15.7 +/- 0.9 mW m(-2)). The acetic acid concentration in effluent increased, whereas the citric acid, ethanol and sugar concentrations decreased during the operation. Microbial community analysis of the anode cell suspension and raw barley-shochu waste revealed that aostridiaceae, Acetobacteraceae, and Enterobacteriaceae became predominant after the operation, implying that microorganisms belonging to these families might be involved in organic waste decomposition and electricity generation in the SMFCs. (C) 2022, The Society for Biotechnology, Japan. All rights reserved.
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