ELECTRICITY GENERATION PROPERTIES OF MICROBIAL FUEL CELL WITH CORN COB ACID PYROLYSIS SOLUTION AS THE SUBSTRATE

GAO Yan-ming; WANG Ting; LI Jie-ling; WEI Shi-cheng; LIU Guang-li; LUO Hai-ping; ZHANG Ren-duo

doi:10.13205/j.hjgc.202111016

Volume 39 Issue 11

Jan. 2022

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Article Navigation > ENVIRONMENTAL ENGINEERING > 2021 > 39(11): 127-134

GAO Yan-ming, WANG Ting, LI Jie-ling, WEI Shi-cheng, LIU Guang-li, LUO Hai-ping, ZHANG Ren-duo. ELECTRICITY GENERATION PROPERTIES OF MICROBIAL FUEL CELL WITH CORN COB ACID PYROLYSIS SOLUTION AS THE SUBSTRATE[J]. ENVIRONMENTAL ENGINEERING , 2021, 39(11): 127-134. doi: 10.13205/j.hjgc.202111016

Citation:

GAO Yan-ming, WANG Ting, LI Jie-ling, WEI Shi-cheng, LIU Guang-li, LUO Hai-ping, ZHANG Ren-duo. ELECTRICITY GENERATION PROPERTIES OF MICROBIAL FUEL CELL WITH CORN COB ACID PYROLYSIS SOLUTION AS THE SUBSTRATE[J]. ENVIRONMENTAL ENGINEERING , 2021, 39(11): 127-134. doi: 10.13205/j.hjgc.202111016

Citation:

GAO Yan-ming, WANG Ting, LI Jie-ling, WEI Shi-cheng, LIU Guang-li, LUO Hai-ping, ZHANG Ren-duo. ELECTRICITY GENERATION PROPERTIES OF MICROBIAL FUEL CELL WITH CORN COB ACID PYROLYSIS SOLUTION AS THE SUBSTRATE[J]. ENVIRONMENTAL ENGINEERING , 2021, 39(11): 127-134. doi: 10.13205/j.hjgc.202111016

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ELECTRICITY GENERATION PROPERTIES OF MICROBIAL FUEL CELL WITH CORN COB ACID PYROLYSIS SOLUTION AS THE SUBSTRATE

doi: 10.13205/j.hjgc.202111016

1. CSG Power Generation Company, Guangzhou 510630, China;
2. School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510006, China;
3. Environmental Protection Research Institute of Guangxi Zhuang Autonomous Region, Nanning 530022, China

Received Date: 2021-06-14
Available Online: 2022-01-26

Abstract

Abstract

The aim of this study is to explore the electricity generation properties in the single-chamber air-cathode microbial fuel cell (MFC) with corn cob acid pyrolysis solution as the substrate. The optimized conditions for the pretreatment of corn cob with oxalic acid pyrolysis were as follows:reaction temperature of 160℃, reaction time of 90 min, oxalic acid dosage of 2% (by mass percentage). Under the optimized condition, the concentration of reducing sugar was 0.44 g/g corn cob and the solid digestibility was about 58%. Fed by the 20 times diluted solution of acid pyrolysis, the MFC could produce the maximum power density of 278 mW/m². The period of electricity generation in the MFC was about 120 h. The COD removal rate in the MFC fed by different concentrations of corn cob acid pyrolysis solution reached more than 90.0%. With the decrease of the diluted factor, the coulombic efficiency (CE) of MFC decreased from 18.6% to 9.72%. Under different concentrations of corn cob hydrolysate, the highest relative abundance of Geobacter, a typical electrically active bacteria (EAB), was 3.40% in the bacterial community in the anodic biofilm of MFC at the genus level. The relative abundance of Klebsiella reached 41.6% under 20 times diluted corn cob acid pyrolysis solution. The results provided a scientific basis for the effective utilization of corn cob in MFC.
- corn cob,
- microbial fuel cell,
- acid pyrolysis,
- degradation,
- electricity generation

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References(33)

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