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Nanomodification of the electrodes in microbial fuel cell: Impact of nanoparticle density on electricity production and microbial community

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  • Alatraktchi, Fatima AlZahra’a
  • Zhang, Yifeng
  • Angelidaki, Irini

Abstract

The nano-decoration of electrode with nanoparticles is one effective way to enhance power output of microbial fuel cells (MFCs). However, the amount of nanoparticles used for decoration has not been optimized yet, and how it affects the microbial community is still unknown. In this study, different densities of gold (Au) nanoparticles were sputtered on carbon paper as electrodes of MFCs. The results show that power generation increased with Au nanoparticle density on the electrodes. The highest power density was obtained by depositing carbon paper with an Au thickness of 50nm and 100nm on each side, respectively, which was 1.22–1.88times higher than that obtained with plain carbon paper electrode (control). Furthermore, the Coulombic efficiency was increased with the Au density. Consequently, the maximum lag time before stable power generation was shortened by 1.22times the lag time of the control. Different densities of Au nanoparticles also resulted in different microbial communities on the anode. More diverse bacterial communities were found with higher Au nanoparticle densities. These results provide new dimensions in understanding electrode modification with nanoparticles in MFC systems.

Suggested Citation

  • Alatraktchi, Fatima AlZahra’a & Zhang, Yifeng & Angelidaki, Irini, 2014. "Nanomodification of the electrodes in microbial fuel cell: Impact of nanoparticle density on electricity production and microbial community," Applied Energy, Elsevier, vol. 116(C), pages 216-222.
    • Handle: RePEc:eee:appene:v:116:y:2014:i:c:p:216-222
    DOI: 10.1016/j.apenergy.2013.11.058
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    12. Kumar, Ravinder & Singh, Lakhveer & Zularisam, A.W., 2016. "Exoelectrogens: Recent advances in molecular drivers involved in extracellular electron transfer and strategies used to improve it for microbial fuel cell applications," Renewable and Sustainable Energy Reviews, Elsevier, vol. 56(C), pages 1322-1336.
    13. Arun, S. & Sinharoy, Arindam & Pakshirajan, Kannan & Lens, Piet N.L., 2020. "Algae based microbial fuel cells for wastewater treatment and recovery of value-added products," Renewable and Sustainable Energy Reviews, Elsevier, vol. 132(C).
    14. Divya Priya, A. & Deva, Sharon & Shalini, P. & Pydi Setty, Y., 2020. "Antimony-tin based intermetallics supported on reduced graphene oxide as anode and MnO2@rGO as cathode electrode for the study of microbial fuel cell performance," Renewable Energy, Elsevier, vol. 150(C), pages 156-166.
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    17. Cai, Weiwei & Zhang, Zhaojing & Ren, Ge & Shen, Qiuxuan & Hou, Yanan & Ma, Anzhou & Deng, Ye & Wang, Aijie & Liu, Wenzong, 2016. "Quorum sensing alters the microbial community of electrode-respiring bacteria and hydrogen scavengers toward improving hydrogen yield in microbial electrolysis cells," Applied Energy, Elsevier, vol. 183(C), pages 1133-1141.
    18. Bahare Salehi & Lijun Wang, 2022. "Critical Review on Nanomaterials for Enhancing Bioconversion and Bioremediation of Agricultural Wastes and Wastewater," Energies, MDPI, vol. 15(15), pages 1-21, July.
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    20. Xu, Lei & Wang, Bodi & Liu, Xiuhua & Yu, Wenzheng & Zhao, Yaqian, 2018. "Maximizing the energy harvest from a microbial fuel cell embedded in a constructed wetland," Applied Energy, Elsevier, vol. 214(C), pages 83-91.

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