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A novel electron acceptor for microbial fuel cells: Nature of circuit connection on internal resistance

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Author(s): OMODIA LUCKY YUSUF MOMOH

Journal: Journal of Biochemical Technology
ISSN 0974-2328

Volume: 2;
Issue: 4;
Start page: 216;
Date: 2010;
Original page

ABSTRACT
The generation of electricity from high strength abattoir waste water has been demonstrated to be feasible at room temperature, using a novel electron acceptor as catholyte with the potential of prolong usage in dual-chambered microbial fuel cell (MFC) systems with agar- salt bridge inter-connection. The utilization of this electron acceptor in the single dual-chambered and double dual-chambered MFC’s in parallel and series was observed to produce an open circuit voltage of 1560mV, 1400mV and 2860mV respectively. Maximum power density was observed to be 12.26mW/m2, 20.71mW/m2 for the single dual-chambered and double dual-chambered in parallel respectively. However, due to very high internal resistance of the double dual-chambered in series (>9999Ω) a very poor polarization data was obtained. Current densities at maximum power for the single dual-chambered and double dual-chambered in parallel were observed to be 16.09mA/m2 and 35.77mA/m2 with internal resistances 4000Ω and 600Ω respectively.   
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