电絮凝ElectrochemicalReactionsforElectrocoagulati

211thECSMeeting,Abstract#883,©TheElectrochemicalSocietyELECTROCHEMICALREACTIONSFORELECTROCOAGULATIONUSINGIRONELECTRODESH.A.MorenoC.a,D.L.Cockea,J.A.G.Gomesa,P.Morkovskyb,J.R.Pargac,E.PetersonaaGillChairofChemistryandChemicalEngineeringLamarUniversity,POBox10022,BeaumontTX77710,USAbKasparElectroplatingCorporation,Shiner,TX77984,USAcInstitutoTecnológicodeSaltillo,DepartmentofMetallurgyandMaterialsScience,V.Carranza2400,C.P.25280,Saltillo,Coahuila,MéxicoABSTRACT:Electrocoagulationhasbeenknownformorethanacentury.Applicationsinindustriesasawaterandwastewatertreatmenthavebeendonefortheremovalofmetals,nonmetals,suspendedsolids,organiccompounds,CODandBOD.Ironelectrodeshavebeenpreferredoveraluminumduetoitsdensity,andprice.However,theelectrochemicalreactionsbehindelectrocoagulationusingironelectrodeshavenotbeensystematicallystudied.ForabetterunderstandingofthemechanismandreactionsforECusingironelectrodes,wepresentareviewofthecurrenttheoryofEC.ExperimentalresultsfrommeasuringpHatdifferentzonesoftheironelectrodesduringtheECprocessaredetailed,andusedtoillustratethemechanismandreactionsthatoccuratboth,anodeandcathode.Themechanismandreactionspresentedexplainphenomenaassociatedwithelectrocoagulation,andarecongruentwithsolubilityandPourbaixdiagrams.