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Experimental Studies for Construction of a Microbial Fuel Cell (MFC) in Continuous Flow Mode

Sadeghi Haskoo, Mohammad Amin | 2011

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 43039 (06)
  4. University: Sharif University of Technology
  5. Department: Chemical and Petroleum Engineering
  6. Advisor(s): Vossoughi, Manoochehr; Aalemzadeh, Iran
  7. Abstract:
  8. In this research performance of microbial fuel cells (MFCs) in continuous flow mode was studied. Different anodic chambers were tested and it was found that granular activated carbons (GACs) produced the highest power density (1228 mW/m3) in comparison with multiple anodes (731 mW/m3), single anode (294 mW/m3) and polymeric packings (40 mW/m3). It was also shown that in a plug-anodic chamber (PAC) the power output is reduced by reducing agitation of anodic volume. Adding more GACs to anodic chamber results in power increase, however by increasing occupied volume from 80% to 100% the power increase was negligible in result of cathodic reactions limitations. Feed flowrate was increased from 0.33cc/min to 0.86cc/min and by this increase power output reached a maximum in 0.45cc/min and then is reduced. Increase in feed concentration resulted in increasing of power output which could be represented by Michaelis-Menten equation. Power output trend in serial MFCs was studied and it was observed that power output diminishes with diminishing of COD content in the latest chambers, the same trend was observed when molasses and domestic sewage were used as initial feed. At the end two different volumes of anodic chambers were examined and it was found that small MFCs have better mass transfer and produce higher power densities
  9. Keywords:
  10. Waste Treatment ; Granular Activated Carbon ; Continuous Microbial Fuel Cell ; Anodic Chamber ; Power Density

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