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Optimising the proportion of pure and mixed culture in inoculum to enhance the performance of microbial fuel cells

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  • Dipak A. Jadhav
  • Makarand M. Ghangrekar

Abstract

Single-chambered microbial fuel cells (MFCs) were inoculated with different proportions of Shewanella putrefaciens and mixed-anaerobic sludge, viz. 100:0% (MFC-1), 0:100% (MFC-2), 10:90% (MFC-3), 30:70% (MFC-4) and 50:50% (MFC-5). Performance of these MFCs was evaluated using different electrochemical analyses. Due to specific substrate-selectivity, MFC-1 showed lower power (1.22 W.m−3) than MFC-2 (2.15 W.m−3). Power performance increased from 2.21 (MFC-3) to 2.56 W.m−3 (MFC-4) with increased fraction of Shewanella from 10 to 30% in the inoculum, and power density further enhanced to 3.1 W.m−3 in MFC-5 inoculated with equal-fraction of Shewanella and mixed sludge. Bioelectrochemical analyses showed higher electron transfer rate and lower charge-transfer resistance in MFC-5 due to synergy between both the inoculums and promoted the electron transfer at anode. Thus, inoculation of MFC with equal-fraction of mixed-anaerobic sludge and Shewanella showed effective bio-augmentation to improve the anodic bioactivity and power generation from MFC.

Suggested Citation

  • Dipak A. Jadhav & Makarand M. Ghangrekar, 2020. "Optimising the proportion of pure and mixed culture in inoculum to enhance the performance of microbial fuel cells," International Journal of Environmental Technology and Management, Inderscience Enterprises Ltd, vol. 23(1), pages 50-67.
    • Handle: RePEc:ids:ijetma:v:23:y:2020:i:1:p:50-67
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    Citations

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    Cited by:

    1. Dawid Nosek & Piotr Jachimowicz & Agnieszka Cydzik-Kwiatkowska, 2020. "Anode Modification as an Alternative Approach to Improve Electricity Generation in Microbial Fuel Cells," Energies, MDPI, vol. 13(24), pages 1-22, December.
    2. Jadhav, Dipak A. & Park, Sung-Gwan & Eisa, Tasnim & Mungray, Arvind K. & Madenli, Evrim Celik & Olabi, Abdul-Ghani & Abdelkareem, Mohammad Ali & Chae, Kyu-Jung, 2022. "Current outlook towards feasibility and sustainability of ceramic membranes for practical scalable applications of microbial fuel cells," Renewable and Sustainable Energy Reviews, Elsevier, vol. 167(C).

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