高锰酸钾改性对颗粒活性炭吸附Cu-2-的影响

SeriesNo.389November2008金属矿山METALMINE总第389期2008年第11期*(:20477009),(:E2005000183)(1984),,,,050016113(1965),,,,,:050016113高锰酸钾改性对颗粒活性炭吸附Cu2+的影响*赵梅青马子川张立艳吴银素张丽娜(河北师范大学)KMnO4KMnO4Cu2+-pHpH,KMnO4Cu2+,KMnO4Cu2+-pHpHpHKMnO40.03mol/L,;KMnO4Cu2+,3;Cu2+Freundlich,Cu2+,KMnO4Cu2+2.7;0.35mol/LHCl,Cu2+KMnO491.1%,Cu2+8.8%KMnO4,活性炭改性高锰酸钾吸附Cu2+EffectofModificationwithKMnO4ontheCu2+AdsorptionofGranularActivatedCarbonZhaoMeiqingMaZichuanZhangLiyanWuYinsuZhangLina(HebeiNormalUniversity)AbstractGranularactivatedcarbonwasmodifiedwithKMnO4atrefluxing.TheinfluenceofKMnO4concentrationontheCu2+adsorptionratepHcurvesandpHwasinvestigatedandtheeffectofthemodificationwithKMnO4ontheCu2+adsorptionanddesorptioncapacitiesofactivatedcarbonwasstudied.TheresultsshowthattheCu2+adsorptionratepHcurvesandpHofactivatedcarbonmovetothelowerpHsideaftermodificationwithKMnO4.Thebestresultisachievedat0.03mol/LKMnO4concentration.ThemodificationwithKMnO4hasimprovedtheadsorptionrateofCu2+andreducedtheconsumptionofadsorbentbythreetimescomparedwiththatofunmodifiedcarbon.TheCu2+adsorptiononthemodifiedandunmodifiedactivatedcarbonconformstotheFreundlichisothermaladsorptionequation.AtasameequilibriumconcentrationofCu2+,theCu2+adsorptionamountontheactivatedcarbonmodifiedwithKMnO4isabout2.7timeshigherthanthatonunmodifiedcarbon.When0.35mol/LHClsolutionisusedaselutionsolution,thedesorptionratesofCu2+ontheKMnO4modifiedactivatedcarbonandunmodifiedactivatedcarbonare91.1%and8.8%respectively.ThemodificationwithKMnO4hasnotonlyincreasedtheadsorptioncapacityofgranularactivatedcarbonforheavymetalions,butalsoimproveditsdesorptionregenerationperformance.KeywordsActivatedcarbon,Modification,KMnO4,Adsorption,Cu2+Cu2+Pb2+Cd2+Zn2+Hg2+Cr(,),[1],,[23],[46],,,Cu2+Cu(NH3)42+Ni2+Cr()[79],,110,,,,,Cu2+,,Cu2+,111(Cu(NO3)23H2O)(KMnO4)(HCl)(NaOH)100mg/L1000mg/LCu2+,,PHS-3BpHHZQ-F160DG/20-002180-70()98--B1.2250m,,250g,1000mL500mL,,30min,,,,11011h,AC-0,45gAC-0,0.020.030.040.05mol/LKMnO4,30min,,MnO2,11011h,AC-2AC-3AC-4AC-5,KMnO4S-570(SEM)1.3Cu2+30mL50mg/LCu2+,50mL,0.5g,50mL,HClNaOHpH,,254h,pH,0.22m,Cu2+,-pH,pH=6.0[Cu2+]=50mg/L,Cu2+;pH=6.0[Cu2+]=50mg/L0.5gAC,Cu2+;pH=6.00.5gAC,Cu2+22.1KMnO4Cu2+-pHpH,-pHS,pH,[7],KMnO4(AC-0AC-2AC-3AC-4AC-5),Cu2+-pH,11,KMnO4,-pH,(100%)pH,Cu2+-pHpH,50%pH,pH50,1,Cu2+AC-3AC-5AC-4AC-2AC-0,0.03mol/LKMnO4(AC-3)1Cu2+-pH-AC-0;-AC-2;-AC-3;-AC-4;-AC-51Cu2+pH50AC-0AC-2AC-3AC-4AC-5pH505.54.93.54.64.3111赵梅青等:高锰酸钾改性对颗粒活性炭吸附Cu2+的影响2008年第11期:KMnO4,()[10],,MnO2;,2AC-0AC-3SEM,,KMnO4,MnO22SEM2.2Cu2+3pH=6.0Cu2+AC-0AC-3,Cu2+,5min,30.2%,,4.5h,54.6%,[11];Cu2+KMnO4,,2h,97.6%KMnO4,2.3Cu2+4pH=6.0[Cu2+]=50mg/LCu2+4,,0.5gKMnO4(AC-3)(97.6%),2g(95.6%),KMnO4,Cu2+,3,3Cu2+-AC-0;-AC-34Cu2+-AC-0;-AC-32.4Cu2+25pH=6.00.5g,30mLCu2+,Cu2+AC-0AC-3,55,Cu2+,AC-3AC-0,2.75,,Cu2+,,Cu2+,Cu(OH)2,,Cu2+Freundlich((1))lgQ=lgKf+1nlgCeq,(1),Kf1/nFreundlich;QCeq112总第389期金属矿山2008年第11期Cu2+5Cu2+-AC-0;-AC-3FreundlichKf1/n,2,Cu2+2,AC-3Cu2+KfAC-0,1/n,KMnO4,Cu2+2Freundlich1/nKfR2AC-00.770.170.9991AC-30.720.620.99062.5KMnO4,2.2Cu2+AC-0AC-3,30mL0.35mol/LHCl,,Cu2+,,66,KMnO4(5min),91.1%;20min,8.8%KMnO46Cu2+-AC-0;-AC-33(1)KMnO4Cu2+,-pHpH50pH,0.03mol/LKMnO4(2)KMnO4Cu2+,3;Cu2+FreundlichCu2+,KMnO4Cu2+2.7(3)0.35mol/LHCl,KMnO4,Cu2+91.1%[1]AjmalM,RaoRAK,AhmadR,eta.lRemovalandrecoveryofheavymetalsfromelectroplatingwastewaterbyusingKyaniteasanadsorbent[J].JournalofHazardousMaterials,2001,87:127137.[2]ChenJP,WuSN,ChongKH.Surfacemodificationofagranularactivatedcarbonbycitricacidforenhancementofcopperadsorption[J].Carbon,2003,41:19791986.[3]ShimJW,ParkSJ,RyuSK.EffectofmodificationwithHNO3andNaOHonmetaladsorptionbypitchbasedactivatedcarbonfibers[J].Carbon,2001,39:16351642.[4],,,.Mn3O4Cr()[J].,2007(12):119121.[5]RobertMW,MichaelFHJ,andEugeneSI.DynamicprocessesoccurringattheCrIIIaqmanganite(-MnOOH)interface:Simultaneousadsorption,microprecipitation,oxidation/reduction,anddissolution[J].GeochimicaetCosmochimicaActa,2002,66:49114132.[6],,,.[J].(),2005,26(3):1519.[7],,,.[J].,2006(9):7880.[8],,,.Cu(NH3)2+4[J].,2007(2):7276.[9],,,.Ni2+[J].,2007(9):106108.[10],,.HNO3[J].,2007(17):663667.[11]BabelS,KurniawanTA.Cr(VI)removalfromsyntheticwastewaterusingcoconutshellcharcoalandcommercialactivatedcarbonmodifiedwithoxidizingagentsand/orchitosan[J].Chemosphere,2004,54:951967.(收稿日期20080922)113赵梅青等:高锰酸钾改性对颗粒活性炭吸附Cu2+的影响2008年第11期