Journal
PROCESSES
Volume 9, Issue 12, Pages -Publisher
MDPI
DOI: 10.3390/pr9122194
Keywords
microbial fuel cell; bamboo charcoal; potato wastewater; in-series connection
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This study demonstrated that connecting microbial fuel cells in series can increase power output, but it is crucial to choose low resistance bamboo charcoal to enhance power density.
In this study, three single-chamber microbial fuel cells (MFCs), each having Pt-coated carbon cloth as a cathode and four bamboo charcoal (BC) plates as an anode, were run in a fed-batch mode, individually and in series. Simulated potato-processing wastewater was used as a substrate for supporting the growth of a mixed bacterial culture. The maximum power output increased from 0.386 mW with one MFC to 1.047 mW with three MFCs connected in series. The maximum power density, however, decreased from 576 mW/m(2) (normalized to the cathode area) with one MFC to 520 mW/m(2) with three MFCs in series. The experimental results showed that power can be increased by connecting the MFCs in series; however, choosing low resistance BC is crucial for increasing power density.
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