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Experimental Investigation of Electricity Generation in Dual Chamber Microbial Fuel Cell- Effective Parameters in Cathode Chamber

Bakhshian, Sahar | 2010

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 41326 (06)
  4. University: Sharif University of Technology
  5. Department: Chemical and Petroleum Engineering
  6. Advisor(s): Kariminia, Hamid Reza; Roshandel, Ramin
  7. Abstract:
  8. Two major challenges facing countries all around the world are the demand for renewable energy resources and treatment of large quantities of industrial and household wastewaters. One of the new and environmentally acceptable methods to produce green energy is Microbial Fuel Cells (MFCs), which has been noted by many researchers in recent years. MFC is a new technology which has the ability to produce green energy along with treatment of wastewater stream, based on oxidation of organic maters through microbial metabolism. In this study we investigated the effects of different cathode chamber parameters on operation and efficiency of a two chamber MFC at laboratory scale. These parameters include: types of electrode, electrode surface area, ionic strength in catholic solution and graphite electrode using immobilized laccas and manganese peroxide (MnP) enzymes. Presence of these enzymes in the cathode led to increase of output power and current density and also decreased activation overpotential of MFC. To show positive effect of decolorization by laccase, we used soluble laccas in the cathode chamber of MFC where Reactive Blue 221 was applied. Efficiencies of electricity generation, wastewater treatment in the anode chamber and decolorization in the cathode chamber of MFC were examined and effect of different parameters was investigated. Simultaneous electricity generation and RB221 decolorization had a positive effect on MFC performance and maximum power density of MFC coupled with decolorization during its stabilization period was 30% higher than that of MFC operated under no decolorization
  9. Keywords:
  10. Fuel Cell ; Decolorization ; Renewable Energy Resources ; Cathode Chamber ; Enzyme Stabilization

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