大分子络合超滤技术去除溶液中镍离子的研究

16环境工程学报Vol.1,No.620076ChineseJournalofEnvironmentalEngineeringJun.2007闫海红1张国俊1*纪树兰1刘忠洲2(1.,100022;2.,100085)(PAA)(CMC)Ni2+,Ni2+,,,,95%;Ni2+30min,(170mg/L)PAA(015wt%)CMC(015wt%)1B2151B1Na+Mg2+,,,Ni2+X703A1673-9108(2007)06-0030-05RemovalofnickelionsbymacromolecularcomplexenhancedultrafiltrationYanHaihong1ZhangGuojun1JiShulan1LiuZhongzhou2(1.CollegeofEnvironmentalandEnergyEngineering,BeijingUniversityofTechnology,Beijing100022;2.ResearchCenterforEco-EnvironmentalSciences,ChineseAcademyofSciences,Beijing100085)AbstractInthisstudy,thenickelionswerefirstlyboundedbyPAAandCMCtoformmeta-lmacromolecu-larcomplex.Thecomplexcouldbeefficientlyretainedbyultrafiltrationmembranewhilethepurifiedpermeatewhichmainlycontainsfreemetalionswereobtained.Itwasnotedthatmorethan95%nickelionscouldbere-movedbyusingPAAandCMCenhancedultrafiltration.Underthereactiontimeof30mins,thesuitablemixturevolumeratiosbetweenNi2+(170mg/L)andthePAA(015w%t)andCMC(015w%t)wasdeterminedas1B215and1B1,respectively.ItwasnotedthattheadditionofNa+andMg2+wouldleadtothedecreaseofthere-jectionratio.Inaddition,therealwatercontainingNi2+ionswastreatedbythismethod.Theexperimentalre-sultssuggestedthatalmostnoNi2+ionsweredeterminedintheUFpermeate.Keywordsnickelions;macromolecularcomplex;enhancedultrafiltration:(05005013200505);2006(63005013200601);(yk-j2005-027):2006-08-01;:2006-10-27:(1981~),,,*,E-mai:[e-mail],,[1],,[2]::,,,,,,,,StrathmannH.[3]1980:,,,,,6:11.1(PES,20000;);(PAA,400;ALDRICH);(CMC;);,,,,,Na2-EDTA,()1.285-2();DZF-6020();HF-6100D();AR-2140();V(TOC,);PHC-2pH();752()1.3,,,,,11Fig.1Schematicdiagramofaultrafiltrationprocessforremovalofnickelionswithmacromolecularcomplex1.4GB11910-89()10mg/L,0125mg/L,1.51.5.1超滤膜纯水通量的测定(011MPa)(18e),(1):Jw=VwA@t(1):Jw),L/m2#h;Vw),L;A),m2;t)Vw,h1.5.2镍离子浓度的计算,,,(2)C(mg/L):C=mV(2):m),Lg;V),mL1.5.3镍离子去除率的测定,(3):RNi=1-C1C0(3):C1),mg/L;C0),mg/L22.1Ni2+,,Ni2+,,,,,,,,,,22,Ni2+,,Ni2+,PES,2,PAACMC3111B2151B1,PES95%(C2+Ni17119mg/L;PAA,CMC015wt%;30min)2Ni2+Fig.2EffectsoftheratiobetweenNi2+andpolymeronremovalofNi2+,CMCPAACMC(3),,,,PAA,PAA,3Fig.3Molecularstructuresofpolymers2.2pHpH,pH3~9,44,pH,,pH,,98%Volchek[4](LH)(H)(M)(C2+Ni17119mg/L;PAA,PAA015wt%;:1B2.5;30min)4pHFig.4EffectsofpHvaluesonremovalofNi2+(4):LHZL+HL+MZML(4)(4),(LH)(L),,,,,,,,L,,2.3,,NaClMgSO4,PAA,5(C2+Ni17119mg/L;PAA015wt%;:1B2.5;30min)5Fig.5EffectsofhybridcationsonremovalofNi2+326:5,,,,,Ni2+,,,[5]2.4,,17119mg/L,CODNH+4-N,,11Table1FiltrationofrealwastewaterCOD(mg/L)NH+4-N(mg/L)(mg/L)115.88564.732171.952.67540.9450(%)54.536.7100,,,PAA,,,,CODNH+4-N2.5,,,,,,667,,,5~7,,95%,PES(C2+Ni17119mg/L;PAA015wt%;:1B2.5;30min)6Fig.6EffectsofvolumeconcentrationratioonUFmembraneperformance2.6,,,,,,250mL,,,7(C2+Ni17119mg/L;PAA015wt%;:1B2.5;30min;0.1MPa)7Fig.7Variationoffluxwithoperatingtime7,,70min,30mL,,,250mL,,3,210min,,331,,1mol/LNaOH015h,9716%,,,,-,,3,,PAACMCNi2+,95%:Ni2+30min,(170mg/L)PAA(015w%t)CMC(015w%t)1B2.51B1,pH,pH,Ni2+,pH7~9,;Na+Mg2+,,,Ni2+,,,,[1]瑄.水溶性高分子.北京:化学工业出版社,1998.196~209[2],,..,1999,16(1):87~91[3]StrathmannH.Selectiveremovalofheavymetalionsfromaqueoussolutionsbyultrafiltrationofmacromolecularcom-plexes.SeparationScienceandTechnology,1980,15(4):1135~1152[4]VolchekK.Polymerbinding/ultrafiltrationasamethodforconcentrationandseparationofmetals.JournalofMem-braneScience,1993,(79):253~272[5],,,..,2006,7(4):69~7334