Microbial Fuel Cells and Their Applications in Electricity Generating and Wastewater Treatment
Authors: Shima Fasahat
This research is an experimental research which was done about microbial fuel cells in order to study them for electricity generating and wastewater treatment. These days, it is very important to find new, clean and sustainable ways for energy supplying. Because of this reason there are many researchers around the world who are studying about new and sustainable energies. There are different ways to produce these kind of energies like: solar cells, wind turbines, geothermal energy, fuel cells and many other ways. Fuel cells have different types one of these types is microbial fuel cell. In this research, an MFC was built in order to study how it can be used for electricity generating and wastewater treatment. The microbial fuel cell which was used in this research is a reactor that has two tanks with a catalyst solution. The chemical reaction in microbial fuel cells is a redox reaction. The microbial fuel cell in this research is a two chamber MFC. Anode chamber is an anaerobic one (ABR reactor) and the other chamber is a cathode chamber. Anode chamber consists of stabilized sludge which is the source of microorganisms that do redox reaction. The main microorganisms here are: Propionibacterium and Clostridium. The electrodes of anode chamber are graphite pages. Cathode chamber consists of graphite page electrodes and catalysts like: O2, KMnO4 and C6N6FeK4. The membrane which separates the chambers is Nafion117. The reason of choosing this membrane is explained in the complete paper. The main goal of this research is to generate electricity and treating wastewater. It was found that when you use electron receptor compounds like: O2, MnO4, C6N6FeK4 the velocity of electron receiving speeds up and in a less time more current will be achieved. It was found that the best compounds for this purpose are compounds which have iron in their chemical formula. It is also important to pay attention to the amount of nutrients which enters to bacteria chamber. By adding extra nutrients in some cases the result will be reverse. By using ABR the amount of chemical oxidation demand reduces per day till it arrives to a stable amount.
Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1129013Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 1017
 Nipon P. Future Wasatewater Treatment Technology: Simultaneous Treatment of Wastewater and Electricity Generation, the Joint International Conference on Sustainable Energy and Environment, Hua Hin, Thailand, 2004.
 Habermann, W. and Pommer, E-H. (1991) Biological fuel cells with sulphide storage capacity. Appl. Microbiol. Biotechnol. 35, 128–133
 Microbial Fuel Cells for Wastewater Treatment, Yucatan Centre for Scientific Research (CICY), Mexico, Liliana Alzate-Gaviria, 2010,
 Ghangrekar M.M Shind V.B. Performance of membrane- less microbial fuel cell treating wastewater and effect of electrode distance and area on electricity production Bioresourse Technology Vol .98 pp:2879-2885 2007.
 Huang L. Zeng R.J. Irini A. Electricity production from xylose using a mediator less microbial fuel cell Bioresourse Technology article in press 2008.
 Environmental Health Perspectives Microbial power Rhodoferax ferrireducens Vol.113 pp: 755-759 2005.
 Liu Z.D Li H.R. Effects of bio-and bio-factors on electricity production in a mediator -less microbial fuel cell Biochemical Engineering vol.36 pp:209-214 2007.
 Zielke E.A. Application of Microbial Fuel Cell technology for a Waste Water Treatment Alternative February15 2006.
 Bitton G. Wastewater microbiology third edition published by John Wiley & Sons Inc. pp:307-321 2005
 Bennetto, H. P., 1990. Electricity Generation by microorganisms. Biotechnology Education, 1(4): 163-163.
 Choi, Y. et al. (2003) Dynamic behaviors of redox mediators within the hydrophobic layers as an important factor for effective microbial fuel cell operation. B. Kor. Chem. Soc. 24, 437–440
 Madigan, M.T. et al. (2000) Brock Biology of Microorganisms, Prentice Hall
 Tender, L.M. et al. (2002) Harnessing microbially generated power on the seafloor. Nat. Biotechnol. 20, 821–825
 Oh, S. et al. (2004) Cathode performance as a factor in electricity generation in microbial fuel cells. Environ. Sci. Technol. 38, 4900–4904
 Chen, Xi., Sun, Yaqin., Xiu, Zhilong, Li, Xiaohui., Zhang, Daijia., Stoichiometric analysis of biological hydrogen production by fermentative bacteria
 Tatsuya, Noike., Osamu, Mizuno., Takashi Miyahara., Method of producing hydrogen gas by using hydrogen bacteria, United State Patent March1, 2005