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Correlation of Power Generation With Time-Course Biofilm Architecture Using Klebsiella Variicola In Dual Chamber Microbial Fuel Cell

Islam, M. Amirul and Chee, Wai Woon and Ethiraj, Baranitharan and Cheng, C. K. and Yousuf, Abu and Khan, Maksudur R. (2017) Correlation of Power Generation With Time-Course Biofilm Architecture Using Klebsiella Variicola In Dual Chamber Microbial Fuel Cell. International Journal of Hydrogen Energy, 42 (41). pp. 25933-25941. ISSN 0360-3199

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Abstract

In the present work, the wild type Klebsiella variicola was investigated in double chamber microbial fuel cell (MFC) using palm oil mill effluent as substrate which achieved high power density (4.5 W/m3) and coulombic efficiency (63%) while maintaining the moderate chemical oxygen demand (COD) removal efficiency (58%). The effect of biofilm formation on power generation over time was also evaluated and found that an effective biofilm with the discrete distribution of single layer microorganisms can produce high power corresponding to low charge transfer resistance. The growth of biofilm in multilayers consisting of outnumbered dead cells in the vicinity of the electrode surface caused the polarization resistance and diffusion resistance resulting in a sharp drop in the current generation. The removal of multilayer biofilm from the anode surface positively influenced the cell performance which led to a rapid increase in current generation and thus revealed that effective biofilm predominated by live cells can be an emergent factor for achieving maximum performance in MFC.

Item Type: Article
Uncontrolled Keywords: Microbial fuel cell; Klebsiella variicola; Biofilm architecture; Palm oil mill effluent; Cell viability
Subjects: T Technology > TP Chemical technology
Faculty/Division: Centre of Excellence: Centre of Excellence for Advanced Research in Fluid Flow
Faculty of Chemical & Natural Resources Engineering
Faculty of Engineering Technology
Depositing User: Noorul Farina Arifin
Date Deposited: 12 Jan 2018 03:04
Last Modified: 12 Jan 2018 03:04
URI: http://umpir.ump.edu.my/id/eprint/19998
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