电絮凝-Using electrocoagulation for metal and

电絮凝-Using electrocoagulation for metal andJournalofHazardousMaterials174(2010)670–678ContentslistsavailableatScienceDirectJournalofHazardousMaterialsjournalhomepage:www.elsevier.com/locate/jhazmatUsingelectrocoagulationformetalandchelantseparationfromwashingsolutionafterEDTAleachingofPb,ZnandCdcontaminatedsoilMajaPociecha,DomenLestan∗AgronomyDepartment,BiotechnicalFaculty,UniversityofLjubljana,Jamnikarjeva101,1000Ljubljana,SloveniaarticleinfoArticlehistory:Received30March2009Receivedinrevisedform18September2009Accepted18September2009Availableonline25September2009Keywords:HeavymetalsSoilremediationSoilwashingEDTAElectrocoagulationabstractElectrocoagulationwithanAlsacrificialanodewastestedfortheseparationofchelantandheavymetalsfromawashingsolutionobtainedafterleachingPb(3200mgkg−1),Zn(1100mgkg−1),andCd(21mgkg−1)contaminatedsoilwithEDTA.Intheelectrochemicalprocess,thesacrificialanodecorrodedtoreleaseAl3+whichservedascoagulantforprecipitationofchelantandmetals.Aconstantcurrentdensityof16–1