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阴极硝化耦合阳极反硝化实现微生物燃料电池技术脱氮.docx

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阴极硝化耦合阳极反硝化实现微生物燃料电池技术脱氮 Title:CathodicNitrationCoupledwithAnodicDenitrificationforNitrogenRemovalinMicrobialFuelCellTechnology Abstract: Theincreasingdemandforsustainablewastewatertreatmentmethodshaspromptedthedevelopmentofinnovativetechnologies,suchasmicrobialfuelcells(MFCs),thatprovideefficientnitrogenremoval.Thispaperaimstopresentanoverviewofthecathodicnitrationcoupledwithanodicdenitrificationtechnique,whichhasemergedasapromisingapproachfornitrogenremovalinMFCs.Thepaperdiscussestheprinciple,operation,performance,andchallengesassociatedwiththistechnology,highlightingitspotentialapplicationinwastewatertreatment. 1.Introduction Wastewatertreatmentisacriticalenvironmentalchallengeduetothepresenceofexcessivenitrogencompounds,whichcancauseeutrophicationandharmaquaticecosystems.Microbialfuelcellshavegainedattentionasanalternativetechnologyforwastewatertreatment,offeringenergyrecoveryandnitrogenremovalsimultaneously.ThissectionprovidesanintroductiontotheconceptofMFCsandtheimportanceofnitrogenremovalinthecontextofsustainablewastewatertreatment. 2.CathodicNitration Thissectionexplainstheconceptofcathodicnitration,whichinvolvesthereductionofnitrateornitriteatthecathodeofanMFC.Theprocessoccursthroughthecatalyticactivityofelectrochemicallyactivebacteria,whichconvertnitrate/nitriteintonitrogengas.Themechanisms,biofilmformation,andreactionkineticsassociatedwithcathodicnitrationarediscussedindetail. 3.AnodicDenitrification Anodicdenitrificationreferstotheoxidationoforganicmatterunderanodeconditions,coupledwiththereductionofnitrateornitrite.Thissectionexplorestheprinciples,microorganismsinvolved,andoperatingparametersofanodicdenitrification.Theroleofelectrodematerials,biofilmdevelopment,andelectrontransfermechanismsarealsodiscussed. 4.CouplingofCathodicNitrationandAnodicDenitrification TheintegrationofcathodicnitrationandanodicdenitrificationinMFCsprovidesacomprehensivesolutionfornitrogenremoval.Thissectionpresentsvariousconfigurationsandelectrodearrangementsusedtoachieveefficie