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Int. J. Mol. Sci. 2014, 15(9), 16772-16786; doi:10.3390/ijms150916772

Electricity Generation and Wastewater Treatment of Oil Refinery in Microbial Fuel Cells Using Pseudomonas putida

1
Department of Life Science, National Chung Cheng University, 168 University Road, Minhsiung, Chia-Yi 62102, Taiwan
2
Department of Earth and Environmental Sciences, National Chung Cheng University 168, University Rd., Min-Hsiung, Chia-Yi 62102, Taiwan
3
Department of Chemical Engineering, University Institute of Chemical Technology, Nathalal Parekh Road, Matunga East, Mumbai, Maharashtra 400019, India
4
Department of Biotechnology, National Kaohsiung Normal University, No. 62, Shenjhong Rd., Yanchao Township, Kaohsiung County 82444, Taiwan
5
Department of Hotel and Restaurant Management, Chia-Nan University of Pharmacy and Science, Tainan 71751, Taiwan
6
Advanced Institute of Manufacturing with High-tech Innovations, National Chung Cheng University, Minhsiung, Chiayi 62102, Taiwan
*
Author to whom correspondence should be addressed.
Received: 12 June 2014 / Revised: 8 September 2014 / Accepted: 10 September 2014 / Published: 22 September 2014
(This article belongs to the Section Green Chemistry)
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Abstract

Microbial fuel cells (MFCs) represent a novel platform for treating wastewater and at the same time generating electricity. Using Pseudomonas putida (BCRC 1059), a wild-type bacterium, we demonstrated that the refinery wastewater could be treated and also generate electric current in an air-cathode chamber over four-batch cycles for 63 cumulative days. Our study indicated that the oil refinery wastewater containing 2213 mg/L (ppm) chemical oxygen demand (COD) could be used as a substrate for electricity generation in the reactor of the MFC. A maximum voltage of 355 mV was obtained with the highest power density of 0.005 mW/cm2 in the third cycle with a maximum current density of 0.015 mA/cm2 in regard to the external resistor of 1000 Ω. A maximum coulombic efficiency of 6 × 10−2% was obtained in the fourth cycle. The removal efficiency of the COD reached 30% as a function of time. Electron transfer mechanism was studied using cyclic voltammetry, which indicated the presence of a soluble electron shuttle in the reactor. Our study demonstrated that oil refinery wastewater could be used as a substrate for electricity generation. View Full-Text
Keywords: microbial fuel cell; oil refinery; air-cathode; Pseudomonas putida; chemical oxygen demand microbial fuel cell; oil refinery; air-cathode; Pseudomonas putida; chemical oxygen demand
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

Majumder, D.; Maity, J.P.; Tseng, M.-J.; Nimje, V.R.; Chen, H.-R.; Chen, C.-C.; Chang, Y.-F.; Yang, T.-C.; Chen, C.-Y. Electricity Generation and Wastewater Treatment of Oil Refinery in Microbial Fuel Cells Using Pseudomonas putida. Int. J. Mol. Sci. 2014, 15, 16772-16786.

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