Preparationandapplicationofpolyacrylamidemodifiedmontmorillonitenano-compositeflocculantLuoYaofa,MeiGang,ChengXu,DuZongliang,ZhuPuxin(InstituteofTextile,SichuanUniversity,Chengdu610065,China)PAM/,,,,(,610065)Abstract:Thenano-compositeflocculantnamelyPAM/MMThasbeenpreparedbypolymerizationusingacrylamidemonomerandNa+-montmorillonitemodifiedbyin-situintercalationwithdimethyldiallylammoniumchloride.Thisflocculantcombiningwithcoagulantpolyaluminumchloride(PAC)isusedfortreatingsimulatedactivedyestuff(K-GL)wastewater.Theeffectsofthedosagesofcoagulantandflocculant,differentdyeconcentrationsandpHonthetreatmentefficiencyarestudied.ExperimentalresultsshowthatPAC-PAM/MMTflocculationsystemisbetterthanPAC-PAMsystembothondecolorizationrateandsettlementvelocity,andthedecolorizationrateof99.8%isob-tainedwhenthedosagesofPACandPAM/MMTare400mg/Land10mg/Lrespectively.ThePAC-PAM/MMTfloc-culationsystempresentsmoreadvantagesasdealingwithactivedyewastewaterwithlowerconcentrationandlowersensitivityofpH.Keywords:in-situintercalationpolymerization;polyacrylamidemodifiedmontmorillonite;flocculant[],,PAM/MMT。(PAC)K-GL,、pH。:PAC-PAM/MMTPAC-PAM,PAC、PAM/MMT400、10mg/L,99.8%;pH。[];;[]TQ314.253[]A[]1005-829X(2009)10-0014-04[](50673062);863(2007AA03Z344),,〔1〕。、〔2-4〕。,〔5〕。(MMT),1nm〔6〕。Na+、K+、Ca2+、Mg2+,,,,,,〔7〕。,〔8〕。、〔9-10〕。〔11〕(PDMDAAC),,98%。〔12〕,/,2910200910IndustrialWaterTreatmentVol.29No.10Oct.,200914——2009-10,29(10),。(DMDAAC),,,(PAM/MMT)。(PAC),,PAM-PAC。11.1:DMDAAC,60%;(Na-MMT),(CEC)1.25mmol/g,75μm,;K-GL(λmax620nm);PAC;(PAM),,900,;。:723,;,。1.2MMTPAM/MMTMMT,,pH4,MMT。DMDAAC,75℃,2h。,Cl-,DMDAACMMT。,,6%MMT,pH6,2h,0.4%(1∶1),40℃,4h,30%PAM/(PAM/MMT),2%38mPa·s。XRD。PAMNa-MMT(PAM6%)40℃4hPAMMMTPAMbMMT。1.3K-GL。〔13〕,pH6.7。30minHmaxt1/2(1/2Hmax)。:50mL100mL,PAC,5min,PAM/MMT,5min,30min5mm,620nm,。22.1PAC,PAC,,,,。PAC400mg/L、K-GL500mg/L,1。1,PAC,PAM、PAMbMMTPAM/MMT15mg/L,。,20mg/L,。,,,,,。,,PAM/MMTPAMPAMbMMT。PAM/MMT,MMT,,MMT,;,MMTMMT〔18〕。PAMbMMT,PAMMMT。PAC400mg/L,K-GL200mg/L(1)、500mg/L(2)1000mg/L(3),,:PAM/15——2009-10,29(10)2。2,,,。,PAM/MMTPAM,99.8%。PAM/MMT,MMT。,2,,,;,。PAMbMMTPAM,2。PAMMMTMMT。2.2PAC,。,。,10mg/L、K-GL500mg/L,PAC,3、4。3,PAC,,400mg/L,。,,。PAC、、,。3,PAM/MMTPAC。PAM/MMT。4,。PAC,400mg/L。800mg/L,。PAC800mg/L,。PAC,,,;PAC,PAC,。PAC-PAM/MMTPAC-PAM,PAM/MMT。2.3,400mg/L10mg/L,K-GL,5。5,K-GL80016——2009-10,29(10)[](1983—),2007,,E-mail:luoyaofa.happy@163.com。:,E-mail:DZL407@163.com。[]2009-06-17(),:PAM/mg/L,,;,;PAC-PAM/MMTPAC-PAM,,。PAM/MMT,2。2.4pHpH,PAC。pH6。K-GL、PAC、500、400、10mg/L。6,pH2~9,,pH。PAC-PAM/MMTMMTPAC-PAM。pH9,。pH9,PAC,,pH,。,pH。6,pH9,PAC-PAM/MMTPAC-PAM,pH,pH,PAM/MMTMMT,MMT,。3DMDAACMMT,PAM/MMT。PACK-GL,PAC-PAM。,PAMMMT,PAM,PAC,,;MMT,PAM。PAM/MMTPAM,,99.8%,PAC-PAM。PAM/MMTPACPAC,pH。[][1]BaskaralingamP,PulikesiM,ElangoD,etal.Adsorptionofaciddyeontoorganobentonite[J].JournalofHazardousMaterials,2006,128(2/3):138-144.[2]AhnDH,ChangWS,YoonTI.Dyestuffwastewatertreatmentusingchemicaloxidation,physicaladsorptionandfixedbedbiofilmpro-cess[J].ProcessBiochemistry,1999,34(5):429-439.[3],,.PAM/PAC[J].,2005,22(7):540-542.[4]KimTH,ParkC,YangJ,etal.Comparisonofdisperseandreac-tivedyeremovalsbychemicalcoagulationandFentonoxidation[J].JournalofHazardousMaterials2004,112(1/2):95-103.[5],,,./[J].,2001,27(5):267-270.[6],,./[J].,2002,9(4):22-26.[7],,.[J].,2006,23(5):453-456.[8].[M].:,2006:10-24.[9]YildizN,GonulsenR,KoyuncuH,etal.Adsorptionofbenzoicacidandhydroquinonebyorganicallymodifedbentonites[J].ColloidsandSurfacesA:Physicochem.Eng.Aspects,2005,260(1/2/3):87-94.[10]UnuabonahEI,AdebowaleKO,DawoduFA.Equilibrium,ki-neticandsorberdesignstudiesontheadsorptionofAnilinebluedyebysodiumtetraborate-modifiedKaoliniteclayadsorbent[J].JournalofHazardousMaterials,2008,157(2/3):397-409.[11],,.PDMDAAC-[J].,2005,31(12):16-19.[12],./[J].,2007,23(5):104-107.[13],,.P(AM-DM-DAAC-BA)[J].,2003,19(2):97-100.[14].[M].:,2005:94-95.17——