负载金属镧的壳聚糖对含氟水的处理姚瑞华

、。1.5～20.5mg·L-1、、[1]。GB5949-20061.0mg·L-1。、、、[2-5]、。[6-10]。Zhou[11-12]La3+F-98.8%。[13]La3+--F-19.46mg·g-1。La3+。。11.185%20mg·L-1F-20、40、60、80、100、120mg·L-1F-。1.2F-1DHG-9030APHS-3CBS1241SH2S-HICP-AESoptima5300DCPEAvatar-360Nicolet。1.31.3.1La3+1L1.0g500r·min-12661001g·L-1La3+0.15mol·L-16h0.1mmpH750℃400r·min-160min。1.6g·L-120mg·L-1F-98.4%。0.1mol·L-1NaOH24h。F-LangmuirF-476.190mg·g-1。TQ424A1000-3700(2008)[e-mail][e-mail]。3412200812TECHNOLOGYOFWATERTREATMENTVol.34No.12Dec.,200881DOI:10.16796/j.cnki.1000-3770.2008.12.02460℃。ηLa3+0.05、0.1、0.15、0.2、0.25mol·L-1、2、4、6、8、10h、0.5、0.3、0.25、0.15、0.1mm。η=C0-Ce/C0×100%1η%C0F-mg·L-1CeF-mg·L-1。1.3.2pH5、6、7、8、9、10、20、30、40、50℃、200、300、400、500、600r·min-1。1.3.3、0.2、0.4、0.8、1.2、1.6、2.0g·L-1。1.3.42qe。qe=VC0-Ce/W2qemg·g-1VLWg。1.3.520mg·L-1F-60℃。11000.1mol·L-1NaOH24h。F-F-。1.3.61100400～4000cm-1。22.1La3+La3+H2OLa(H2O)n3+-NH2。-NH2La3+La(H2O)n3+-NH2F-F-[13-14]。La3+0.15mol·L-120mg·L-1F-F-95%F-0.874mg·L-11mg·L-10.3mg·L-1La3+。0.15mol·L-1。La(H2O)n3+1。La(H2O)n3+-NH2H+La(H2O)n3+-NH2La(H2O)n3+-NH2[15]pH[16]-NH2。La(H2O)n3+。16hF-79.54%。、。0.5mm0.1mm1F-51.7%88.3%。1.0g·L-1La3+0.15mol·L-16h0.1mm。2.2pH0.10.20.30.40.5020406080100246810
/%/h /mm1Fig.1EffectofpreparingtimeandparticlesizeonadsorptionofF-341282。2F-pHpH797.8%pH＜7H+-NH2-NH3+pH＞7La3+50%pHOH-F-F-F-pHLa3+[15]。[13]pH5～8。。。F-F-[17]50℃98.5%2。F-。32g·L-120mg·L-124h400r·min-1F-87.28%。50℃pH7400r·min-1。2.3410min94.24%。60minF-98.7%。F-。60min。2.45F-。20mg·L-1F-0.2g·L-136.80%1.6g·L-198.40%F-0.32mg·L-1WHO1.5mg·L-1[18]GB5949-20061mg·L-1。2.510、30、50℃。1qmaxLangmuirkLLangmuirRKFFreundlichF-20～120mg·567897075808590951001020304050
/%pH2pHFig.2EffectoftemperatureandpHvalueonadsorptionofF-20030040050060085.085.586.086.587.087.588.088.589.0
/%/rmin3Fig.3EffectofstirringspeedonadsorptionofF-0102030405060708090949596979899
%/min4Fig.4EffectofcontacttimeonadsorptionofF-5Fig.5EffectofadsorptiondoseonadsorptionofF-0.00.51.01.52.02.50102030405060708090100
gL /%05101520253035404550q/mgL83L-1F-LangmuirF-F-。F-。Langmuir476.19mg·g-1。2.6OH-F-pH[20]。pH750℃400r·min-160min0.1g50mL20mg·L-1F-F-0.10mg·L-1F-0.995mg0.1g10mL0.1mol·L-1NaOH24h400r·min-189.72mg·L-1F-0.8972mg90.2%。1:1HNO3pH。Zhou[12]NaOHHNO398.5%82.3%。2.7。La3+1080cm-1-C-OLa3+La3+La3+。-C-O1580cm-1-N-H1530cm-1La3+-N-H。1650cm-1La3+1637cm-1[19]。31g·L-1La3+0.15mol·L-16h0.1mm。pH750℃400r·min-160min。1.6g·L-120mg·L-198.4%F-0.32mg·L-1。0.1mol·L-1NaOH24hF-Langmuir476.190mg·g-1。[1]SAyoob,AKGupta.Fluorideindrinkingwaterareviewonthestatusandstresseffects[J].CritRevEnvironSciTechnol.,2006(36):433-487.[2]AmorZ,BariouB.Fluorideremovalfrombrackishwaterbyelectrodialysis[J].Desalination,2001,133(3):215-223.[3]KongLingdong,HeJixiu,WangAiying,etal.Theprogressoftheresearchonthetreatmentofthefluorine-containingsewage[J].Sci-techInformationDevelopment&Economy(China),2006,8(12):143-145.[4],.[J].,1990,16(4):298-303.[5]PINdiaye,PMoulin,LDomingwez,etal.RemovaloffluoridefromelectronicindustrialeffluentbyROmembraneseparation[J].Desalination,2005,173(3):25-32.[6]XFan,DJParker,MDSmith.Adsorptionkineticsoffluorideonlowcostmaterials[J].WaterRearch,2003(37):4929-4937.[7]SVMohana,SVRamanaiah,BRajkumar,etal.BiosorptionoffluoridefromaqueousphaseontoalgalSpirogyraandevaluationofadsorptionkinetics[J].BioresTechnol.,2006(3):125-131.[8]WeiMa,Fei-QunYa,MeiHan,etal.Characteristicsofequilibrium,kineticsstudiesforadsorptionoffluorideonmagnetic-chitosanparticle[J].JournalofHazardousMaterial,2006,9(32):1-7.[9]NomuraJ.Removaloffluorideionfromwastewaterbyahydrousceriumoxideadsorbent[J].AmChemSocSympSer.,1990,422:157.[10]TokunagaS.Removaloffluorideionsfromaqueoussolutionsbymultivalentmetalcompounds[J].IntJEnvironStudies,1995,48:17.[11],.[J].,2002,10(20):125-127.[12]YumingZhou,ChuanxiangYu,YunShan.AdsorptionoffluoridefromaqueoussolutiononLa3+-impregnatedcross-linkedgelatin[J].SeparationandPurificationTechnology,2004,36:89-94.[13],.[J].,2000,21(4):34-37.[14]WasaySA,TokunagaS.RemovalofhazardousanionsfromaqueoussolutionsbyLa()andY()-impregnatedalumina[J].SeparationScienceandTechnology,1996,31(10):1501./℃10203075.18899.010476.1900.00360.00300.00080.9930.9960.9990.5230.3870.3951.2761.1211.0330.9850.9870.995qmax/mg·g-1kL/mg-1nRFreundlichkF/g-1RLangmuir1LangmuirFreundlichTable1TheisothermconstantsofLangmuirandFreundlich92341284DEFLUORIDATIONOFWATERUSINGLANTHANUM-MODIFIEDCHITOSANYAORui-hua,MENGFan-ping,ZHANGLong-jun,MaDong-dong,LIUJiao(KeyLabofMarineEnvironmentScienceandEcology,MinistryofEducation,OceanUniversityofChina,Qingdao266100,China)Abstract:Thewatercontaininghighfluorideionscoulddogreatharmtohumanandenvironment.Inthiswork,theapplicabilityofchitosanmodifiedbylanthanumasadsorbentsfortheremovalofexcessfluoridefromwaterwasstudied.Theoptimalpreparingconditionswere:dosageofchitosanwas1g·L-1,concentrationoflanthanumwas0.15mol·L-1,preparingtimewas6h,particlesizewas0.1mm;Andthetreatmentconditionswereoptimizedtoo:pHvaluewas7,watertemperaturewas5