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1、BioresourceTechnology102(2011)416–421ContentslistsavailableatScienceDirectBioresourceTechnologyjournalhomepage:www.elsevier.com/locate/biortechTime-coursecorrelationofbiofilmpropertiesandelectrochemicalperformanceinsingle-chambermicrobialfuelcellsa,cb,1babZhiyongRen,RamarajaP.Ramasamy,Su
2、sanRedCloud-Owen,HengjingYan,MatthewM.Mench,a,*JohnM.ReganaDepartmentofCivilandEnvironmentalEngineering,ThePennsylvaniaStateUniversity,UniversityPark,PA16802,USAbDepartmentofMechanicalandNuclearEngineering,ThePennsylvaniaStateUniversity,UniversityPark,PA16802,USAcDepartmentofCivilEngine
3、ering,UniversityofColoradoDenver,Denver,Colorado80217,USAarticleinfoabstractArticlehistory:TherelationshipbetweenanodemicrobialcharacteristicsandelectrochemicalparametersinmicrobialReceived14March2010fuelcells(MFCs)wasanalyzedbytime-coursesamplingofparallelsingle-bottleMFCsoperatedunder
4、Receivedinrevisedform1June2010identicalconditions.Whilevoltagestabilizedwithin4days,anodebiofilmscontinuedgrowingduringAccepted2June2010thesix-weekoperation.Viablecelldensityincreasedasymptotically,butmembrane-compromisedcellsAvailableonline29June2010accumulatedsteadilyfromonly9%oftotalc
5、ellsonday3to52%at6weeks.Electrochemicalperformancefollowedtheviablecelltrend,withapositivecorrelationforpowerdensityandaninversecorrelationforKeywords:anodechargetransferresistance.Thebiofilmarchitectureshiftedfromrod-shaped,dispersedcellstoMicrobialfuelcellmorefilamentousstructures,witht
6、hecontinuousdetectionofGeobactersulfurreducens-like16SrRNAElectricityBiofilmfragmentsthroughoutoperationandtheemergenceofacommunitymemberrelatedtoaknownphen-Electrochemicalimpedancespectroscopyazine-producingPseudomonasspecies.Adropincathodeopencircuitpotentialbetweenweekstwoandthreesugg
7、estedthatuncontrolledbiofilmgrowthonthecathodedeleteriouslyaffectssystemperformance.Ó2010ElsevierLtd.Allrightsreserved.1.Introductiontemperformancebasedonpolarizationandpowerdensitycurves(Loganetal.,2006).ThesecollectiveMFCdatahavehadlittleorMicrobialfuelcells(MFCs)employmicroor
