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Sustainable Power Generation In Continuous Flow Microbial Fuel Cell Treating Actual Wastewater: Influence Of Biocatalyst Type On Electricity Production

Zainab Z. Ismail, Ali Jwied Jaeel

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Microbial fuel cells (MFCs) have the potential to simultaneously treat wastewater for reuse and to generate electricity. This study mainly considers the performance of an upflow dual-chambered MFC continuously fueled with actual domestic wastewater and alternatively biocatalyzed with aerobic activated sludge and strain ofBacillus Subtilis. The behavior of MFCs during initial biofilm growth and characterization of anodic biofilm were studied. After 45 days of continuous operation, the biofilms on the anodic electrode were well developed. The performance of MFCs was mainly evaluated in terms of COD reductions and electrical power output. Results revealed that the COD removal efficiency was 84% and 90% and the stabilized power outputs were clearly observed achieving a maximum value of 120 and 270 mW/m2obtained for MFCs inoculated with mixed cultures andBacillus Subtilisstrain, respectively.