Impact of graphene oxide on removal of heavy metals using mixed matrix membrane

Impact of graphene oxide on removal of heavy metals using mixed matrix membraneImpactofgrapheneoxideonremovalofheavymetalsusingmixedmatrixmembraneRakaMukherjee,PrasenjitBhunia,SirshenduDe⇑DepartmentofChemicalEngineering,IndianInstituteofTechnologyKharagpur,Kharagpur721302,Indiahighlights�MembranebecamemorehydrophilicandporouswithadditionofGO.�Above90%rejectionofCr,Cd,PbandCuwaseffectedbyMMM.�MembraneperformedbetterinbasicpH,lowpressureandflowrate.�In-situmembraneregenerationwaspossiblebyacidtreatment.graphicalabstract0204060801001201401601802002200204060801001201401601802002202401020304050609092949698100pH=6.4pH=6.7pH=3.5CuCdCrPbRejection(%)Time(min)Membrane:GO0.2TMP:690kPaCFR:20l/hRejectionofdifferentheavymetalpH=6.5GO0.5GO0.35GO0.2Adsorptioncapacity(mg/g)Equilibriumconc.(mg/l)ChromiumpH3.5GO0.1AdsorptionisothermofChromiumasnaturalpH(pH3.5)Discretepoints:experimentaldataLine:DatafittedinLangmuirisothermarticleinfoArticlehistory:Received16December2015Receivedinrevisedform1February2016A