title: Substrate concentration dependence of voltage and power production characteristics in two-chambered mediator-less microbial fuel cells with acetate and peptone substrates.
abstract: OBJECTIVE
  Power production characteristics and substrate concentration dependence of voltage have been investigated together with the determination of kinetic constants in two-chambered mediator-less microbial fuel cells (MFC) for acetate and peptone substrates.
  
  
  RESULTS
  At 500 mg DOC l-1(dissolved organic carbon), power densities normalized to the anode surface of 112 mW m-2with acetate and 114 mW m-2with peptone as electron donor were attained by applying cathodes with a Pt catalyst layer. Related anode surface specific substrate removal rate was 44 g DOC m-2h-1for acetate and 52 g DOC m-2h-1for peptone. Substrate concentration dependency of the voltage suggests Monod-like kinetics with extremely low, <1 mg DOC l-1, half saturation constants and with final DOC concentrations of 6-10 mg l-1.
  
  
  CONCLUSIONS
  Acetate and peptone are equivalent substrates for the exoelectrogenic bacteria both from the point of view of biodegradation kinetics and power production characteristics.
authors.affiliation: Department of Applied Biotechnology and Food Science, Budapest University of Technology and Economics, Szt. Gellért tér 4, Budapest, 1111, Hungary. gtardy@mail.bme.hu.
authors.forename: Gábor Márk
authors.initials: GM
authors.lastname: Tardy
authors.affiliation: Department of Applied Biotechnology and Food Science, Budapest University of Technology and Economics, Szt. Gellért tér 4, Budapest, 1111, Hungary.
authors.forename: Bálint
authors.initials: B
authors.lastname: Lóránt
authors.affiliation: Department of Applied Biotechnology and Food Science, Budapest University of Technology and Economics, Szt. Gellért tér 4, Budapest, 1111, Hungary.
authors.forename: Máté
authors.initials: M
authors.lastname: Lóka
mesh_terms: D000085:Acetates / Q000378:metabolism*; D001674:Bioelectric Energy Sources; D002244:Carbon / Q000032:analysis; D004560:Electricity; D004566:Electrodes; D007700:Kinetics; D009930:Organic Chemicals / Q000032:analysis; D010461:Peptones / Q000378:metabolism*; D013379:Substrate Specificity
chemical_list: D000085:Acetates; D009930:Organic Chemicals; D010461:Peptones; D002244:Carbon
keywords: Biodegradation kinetics; Electricity generation; Microbial fuel cell; Power production