Screening and Selection of Ferric Reducing Bacteria by Electrical Current for Microbial Fuel Cell

Authors

  • Kamol Rodyou Chulalongkorn University
  • Sirirat Rengpipat Chulalongkorn University
  • Mana Sriyudthsak Chulalongkorn University

DOI:

https://doi.org/10.4186/ej.2017.21.5.25

Abstract

The efficiency of microbial fuel cell (MFC) performance depends on the competence of microorganisms on being an essential role in primarily converting organic compound into electricity. In this study, the possibility of using electrical current to select electrochemical active bacteria from sub-sediment for use in MFC was conducted. By using an alternating current (AC) of 0.6 - 12 mA and selective media, 16 Gram-positive ferric reducing bacteria (GP-FRB), 15 Gram-negative ferric reducing bacteria (GN-FRB) and 9 Gram-negative non FRB (GN-nonFRB) were characterized. GN-FRB and GP-FRB were obtained from the current of 0.6 - 6 and 9 - 12 mA, respectively. After tested in MFC, GN-FRB had a greater current density and power density than those from GN-nonFRB and GP-FRB. However, the greatest voltage was obtained from GP-FRB, followed by those of GN-nonFRB and GN-FRB, respectively. The highest current and power density of 13.33 mA/m2 and 0.32 mW/m2, respectively were from GN-FRB namely KL14 which was identified later as Proteus sp. This research could contribute a promising method for screening and selection of ferric reducing bacteria using electrical current. MFC inoculated with our selected bacteria could be a model for next study in wastewater treatment.

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Author Biographies

Kamol Rodyou

Program in Biotechnology, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand

Sirirat Rengpipat

Department of Microbiology, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand

Mana Sriyudthsak

Department of Electrical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand

Published

Vol 21 No 5, Sep 29, 2017

How to Cite

[1]
K. Rodyou, S. Rengpipat, and M. Sriyudthsak, “Screening and Selection of Ferric Reducing Bacteria by Electrical Current for Microbial Fuel Cell”, Eng. J., vol. 21, no. 5, pp. 25-35, Sep. 2017.