Removal of Phenol and Electricity Generation in Microbial Fuel Cell by Using Microbial Seeds from Wastewater of Oil Refinery

Authors

1 Faculty of Health, Mazandaran University of Medical Sciences, Sari, Iran

2 Faculty of Chemical Engineering, Noshrivani Universityof Technology, Babol, Iran

Abstract

Microbial fuel cells are an emerging technology that can convert biochemical energy into electrical energy. The driving force in these cells is the result of oxidation-reduction reactions of an organic substance in which microorganisms are used as biocatalysts. In these cells, the bacteria convert the biodegradable organic matter into electrical energy that is biodegradable. This can both treat wastewater and generate electricity. The main components of a microbial fuel cell are the anode, cathode, proton exchange membrane (PEM) and an electrical circuit. The bacterial population around the anode consumes the organic substrate as food and produces electrons and protons. Electrons are absorbed through the electron transfer chain at the anode surface and transferred to the cathode by an external electrical circuit, resulting in a measurable electric current.  The anode part is anaerobic and the cathode part is aerobic (Logan et al. 2006). In the effluents of oil refineries and petrochemicals, there is phenol and its derivatives that cause environmental pollution. On the other hand, in the wastewater treatment system of these industries, there are natural bacteria that cause the biological decomposition of phenolic compounds (Luo et al. 2009). According to the literature, research has been done to remove phenol in the microbial fuel cell, but none of them used the microbial seeds of a refinery wastewater treatment plant. By conducting this research, using this type of microbial seed, the decomposition of phenol and electricity produced in the microbial fuel cell was investigated. The purpose of this study was to determine the rate of decomposition of phenol and electricity produced in microbial fuel cells using microbial seeds obtained from wastewater treatment plants of oil refineries.

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References

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Journal of Civil and Environmental Engineering
Volume 52.3, Issue 108 - Serial Number 108
Autumn of 2022
November 2022
Pages 21-27

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