e-ISSN 2231-8542
ISSN 1511-3701

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Microbial Fuel Cell's Performance of Original and Deoxygenated Palm Oil Mill Effluent in 3 Different Stages of Fermentation Process

Khairul BaqirAlkhair Khairul Amin, Oskar Hasdinor Hassan, Sharifah Aminah Syed Mohamed, Yap Kian Chung Andrew, Zulkifli Ab. Rahman, Hazlini Mohmad Ameran, Nurul Khamsatul Akma Kamaruzaman, Tunku Ishak Tunku Kudin, Ab. Malik Marwan Ali, Mohd Zu Azhan Yahya

Pertanika Journal of Tropical Agricultural Science, Volume 25, Issue S, April 2017

Keywords: Microbial Fuel Cell (MFC), Palm Oil Mill Effluent (POME), pH value

Published on: 21 Dec 2017

Bio-electricity generation by Microbial Fuel Cell (MFC) has gained considerable attention due to its integration with wastewater treatment such as Palm Oil Mill Effluent (POME). Investigation into pH effect and determination of optimal pH value ranges growth for acidogenic, acetogenic and methanogenic by natural mixed culture electroactive bacteria (exoelectrogens) growth in original non-Deoxygenated Mixed POME (nDMP) and Deoxygenated Mixed POME (DMP) in MFC was carried out. Current generation, power generation and maximum power were also monitored. Experimental results show that exoelectrogens in nDMP with pH 6.8 yielded the highest current generation of 61.51 mAm-2 and maximum power of 17.63 mWm-2. Overall, nDMP substrates with 3 pH ranges (5.5, 6.8 and 8.0) showed equal potential to generate power that is higher than DMP substrates. Comparison carried out for inter DMP substrates demonstrated that DMP with pH 6.8 and DMP with pH 8.0 showed equal potential to generate power, but not for DMP with pH 5.5. Subsequently, nDMP with pH 6.8 and nDMP with pH 8.0 showed equal potential for higher maximum power compared to nDMP with pH 5.5 and DMP substrates. This finding indicates that mixed microbial communities in DMP substrate are dominant with obligate anaerobic exoelectrogens bacteria which have less capability to generate electricity compared to nDMP substrate that was dominated by the aerotolerant and/or facultative anaerobic exoelectrogens bacteria.

ISSN 1511-3701

e-ISSN 2231-8542

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