Sulfurous Analysis of Bioelectricity Generation from Sulfate-reducing Bacteria (SRB) in a Microbial Fuel Cell

Authors

  • H. Kazerouni Department of Chemical Engineering, Biotechnology group, Amirkabir University of Technology, Tehran, Iran
  • M.D. Ghaffari Microbiology Group, Shahed University, Tehran, Iran
  • Masood Rahimi PhD Student, University of Science and Technology Tehran, Iran
Abstract:

The current importance of energy emphasizes the use of renewable resources (such as wastewater) for electricity generation by microbial fuel cell (MFC). In the present study, the native sulfate-reducing bacterial strain (R.gh 3) was employed simultaneously for sulfurous component removal and bioelectricity generation. In order to enhance the electrical conductivity and provision of a compatible bed, a complex electrode structure based on stainless steel-304 was prepared. Next, the electrode was coated with a composite of graphite and activated carbon solution. A new approach associated with increasing bacterial population was studied using two electron acceptors composed of iron and sulfate for respiration of sulfate-reducing bacteria. Finally, according to the maximum living cell number (nM = 20 ´108 cell ml-1) and the conditions of the bioreactor including the highly efficient anode electrode, a higher current generation (2.26 mA for the new structure as compared to 1.73 and 1.29 mA for graphite rod and carbon paper, respectively) was observed in the culture media.

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Journal title

volume 4  issue 4

pages  307- 321

publication date 2018-06-13

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