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Bio fuel cells | Sludge Treatment
Bio fuel cells | Sludge Treatment
Bio fuel cells | Sludge Treatment
Bio fuel cells | Sludge Treatment
Bio fuel cells | Sludge Treatment
Bio fuel cells | Sludge Treatment
Bio fuel cells | Sludge Treatment
Bio fuel cells | Sludge Treatment
Bio fuel cells | Sludge Treatment
Bio fuel cells | Sludge Treatment
Bio fuel cells | Sludge Treatment
Bio fuel cells | Sludge Treatment
Bio fuel cells | Sludge Treatment
Bio fuel cells | Sludge Treatment
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Bio fuel cells | Sludge Treatment

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A short presentation on Microbial fuel cells

A short presentation on Microbial fuel cells

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  • 1. icrobial Fuel CellThe future of Bio-energy…M Vishal .V. DoshiMs in Molecular Biology (Contd.),Skövde University,Skövde-54162,Sweden.
  • 2. What is Microbial Fuel Cells (MFC) ?A microbial fuel cell (MFC) converts chemical energy, available in abio-convertible substrate, directly into electricity. To achieve this,bacteria are used as a catalyst to convert substrate into electrons.A typical microbial fuel cell consists of anode and cathodecompartments separated by a cation (positively charged ion)specific membrane. In the anode compartment, fuel is oxidizedby microorganisms, generating electrons and protons.In general, there are two types of microbial fuel cells: mediator andmediator-less microbial fuel cells.
  • 3. Why Microbial Fuel Cells (MFC) ?• Unlimited supply of fuel• No reliance on foreign oil• Little or no pollutants• Much higher energy conversion %• No moving parts• No noise
  • 4.  Anode Chamber– Stores fuel--> Cathode Chamber– Exposed to air<-- Membrane - Allows for H+ passage^ Often Platinum CatalystV V
  • 5. Examples of microbial-based fuel cellsMicrobe Substrate Mediator Anode VoltageE.coli Glucose MethyleneBluePt- C-cloth 625mVBacillussubtilisGlucose Thionine VitreousCarbon640mVE.coli Acetate Neutral red Graphitefelt250mVPseudomonasmethanicaMethane 1-Naphthol-2-Sulfonate indo-2,6dichlorophenolPt-black 550mVProteusvulgarisSucrose Thionine Carbon rod 350mV
  • 6. Molecular BiologyA General layout of a MFC in which in the anodiccompartment the bacteria can bring aboutoxidative conversions while in the cathodiccompartment chemical and microbial reductiveprocesses can occur.(After Rabaey & Verstraete,2005)Mediator Shuttling ElectronsMediator-less
  • 7. Molecular BiologyMediator-lessETC in Prokaryotes
  • 8. Molecular BiologySummary of componentsproposed to be involvedin the electron transportfrom cells to the anode inMFCs using metalreducing microorganisms(Geobacter species).(Figure drawn withmodifications after Lovleyet al., 2004.)
  • 9. Significant Factors AffectingMFC Operation Type of electrodes Surface area of electrodes Use of catalysts Conc. of hydrocarbon in anode chamber Agitation of hydrocarbon molecules Rate of replacement of hydrocarbons Types of microbes/enzymes Conc. of microbes/enzymes
  • 10. Pollution…An Example
  • 11. Pollution…Bacteria+
  • 12. Pollution…Electricity+ =Bioremediation, which uses microbeslike Geobacter metallireducens andS. oneidensis to facilitate removal ofcontaminants, allows on-sitetreatment.+Electricity (sideproduct)
  • 13. Conclusion..!?
  • 14. Thank you forpatient listening

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