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:2007-10-15;:2007-11-30:(1969-),,,,,。1,2,3(1., 841000;2., 841000;3., 841000) :(Pb2+、Cu2+、Cd2+、Cr6+、Ni2+),pH、、、。,,5,590%。:;;;:X830.2 :B :1007-1504(2008)01-0011-04TheAdsorptionofModifiedPeattoHeavyMetalIonsWANGLi-bin1,DUANXiu-rong2,HUSui-xi3(1.EnvironmentalProtectionBureau,BayingolinMongoliaAutonomousPrefecture,KuerleXinjiang841000,China;2.EnvironmentalMonitoringStation,BayinggolinMongoliaAutonomousPrefecture,KuerleXinjiang841000,China;3.TheInstituteofBostenLake,EnvironmentalProtectionBureauofBayingolinMongoliaAutonomousPrefecture,KuerleXinjiang841000,China)Abstract:Thepaperstudiedvariousfactorsofpeatontheadsorptionrateofheavymetalions(Pb2+,Cu2+,Cd2+,Cr6+,Ni2+ionsfive).SolutionpH,oscillationtime,modifiedpeatandotherconditionsofinitialconcentrationwereexperimented.Theresultsshowedthatfiveheavymetalionshadastrongeradsorptiontothemodifiedpeatinthemostsuitableconditions.Maximumadsorptionefficiencywereover90%.Keywords:modifiedpeat;heavymetalions;adsorption;maximumadsorptionefficiency ,,,,,。,,pH、、、。1 1.1 [1,2]:80,1molLNaOH1∶10,80℃2h。,pH7～8,,,,120℃。 22 120083 AridEnvironmentalMonitoring Vol.22 No.1Mar..2008 1.2 1.2.1 [3],,540nm。1.2.2 [4,5],,,1∶4。440nm530nm2,1.5×104L·mol-1·cm-16.6×103L·mol-1·cm-1。、,530nm。1.2.3 、[6,7]Cu2+、Pb2+、Cd2+。,,,。1。1 (L·min-1) 2 2 2(L·min-1)666nm0.20.20.2cm111111s555mA121nm271.1217.1316.52 2.1 pH50mgLCu2+10mgLCd2+、Cr6+、Ni2+、Pb2+100ml,pH2、3、4、5、6、7,0.2g。()2h(200rmin),,,Cu2+、Pb2+、Cd2+,Ni2+,Cr6+。pH1。 1,Cr6+pH=2,90%,pH,,,pH3;Ni2+pH=6,49.24%,pHNi2+,,pH6;pHPb2+,pH,,。pH=5,pH;pH,Cd2+,pH=7(73.21%),pH7,;pH2·12· 223,Cu2+,,pH=7,76.74%。2.2 ,,。。,。2,、。,Cu2+、Pb2+、Cd2+,Ni2+,Cr6+。2 、pH、pH(mg·L-1)gminCr6+2100.25、10、20、30、60、90、120、150Ni2+6100.25、20、40、60、90、120、150Cd2+7100.25、20、40、60、90、120、150Pb2+5100.25、20、40、60、90、120、150Cu2+7500.25、20、40、60、90、120、150 Cr6+,5min30min,75%,60min150min,80%,150min,120min0.96,120min;Ni2+,150min(67.85%)。,4;Cd2+,90min,81.93%。90min,,,;Pb2+,120min,76.54%,,,;Cu2+,40min,(78.38%),,。2.3 。2。Cr6+、Cd2+,0.05g,,,,Cr6+0.3g,;Cd2+,。Pb2+、Cu2+0.1g,,,Cu2+,78.93%15.32%;Ni2+,0.2g(88.58%),。,Ni2+,0.2g。2.4 (2),,,Cu2+、Pb2+、Cd2+,Ni2+,Cr6+。3。1) Cu2+、Pb2+、Cd2+、Cr6+、Ni2+,92.98%、95.54%、92.27%、99.63%、93.28%。2) Pb2+(10～100mgL),100mgL,95.12%。3) Cu2+、Ni2+。Cu2+50～200mgL,50mgL,77.83%;Ni2+5～50mgL,80%。4) Cd2+,Cd2+·13·1 ,,Cd2+,Cd2+10～150mgL,Cd2+68.89%。3 pH(mg·L-1)gminCr6+2,3,5,6,75,10,20,50,100,150,2000.3 120Ni2+2,3,5,6,75,10,20,30,50,70,1000.290Cd2+2,3,5,6,75,10,30,50,100,150,2000.3120Pb2+2,3,5,6,75,10,30,50,100,150,2000.1120Cu2+2,3,5,6,710,30,50,70,100,1500.1403 ,Cr6+pH=2、120min、0.3g、10mgL,99.63%;Ni2+pH=6、120min、0.2g、10mgL,93.28%;Cd2+pH=7、90min、0.3g、150mgL,92.27%;Pb2+pH=5、120min、0.1g、50mgL,95.54%;Cu2+pH=7、40min、0.1g、150mgL,92.98%。:[1] NICHOLSDS,BOEHERDH.Treatmentofsecondarysewageef-fluentwithapeatsandfilterbed[J].JEnvironQua1,1982,11(1):86—92.[2] SMITHEF,MACARTHYP,YUTC.Sulfuricacidtreatmentofpeatforcationexchange[J].JWatPollutContrFed.,1977,49(5):633—638.[3] .Cr6+[J].,1993,13(5):310—312.[4] ,.[J].,1995,7(6):256.[5] .[J].,2000,34(1):41—42.[6] KERTMANSV,KERTMANGM,CHIBRIKOVAZS.Peataheavymetalsorbent[J].JApp1Chem,U.S.S.R,1993,66(2):465—466.[7] ,,,.[J].,2001,21(6):35—37.·14· 22