硅胶载体除氟剂的性能研究崔卫华1

CHEMICALINDUSTRYANDENGINEERINGPROGRESS2007268·1170·1000830.98mg/g1.00mg/g1.72mg/g//SO42ClCa2+Mg2+//X52A10006613200708117004Studyonfluorideremovalperformanceofsilica/activatedaluminaandailica/activatedmagnesiaCUIWeihuaDONGBangzhenLIUFei(ChinaUniversityofGeosciences,Beijing100083,China)Abstract:Usingsilicaascarrier,activatedaluminaandactivatedmagnesiaassorbent,twokindsoffluoride-removalmaterialswereprepared.Orthogonaldesignwasusedtodevelopthebestpreparationsteps.Thefluorideremovalcapacityofsilica/activatedaluminaandsilica/activatedmagnesiawasmeasured.Underthesameconditions,thefluorideremovalcapacityofactivatedzeolitewas0.98mg/greportedbypriorresearchers,butthefluoride-removalcapacitiesofthesetwokindsoffluoride-removalmaterialswere1.00and1.72mg/grespectively.TheresistancetointerferencebySO42ClCa2+andMg2+weretested.Thenewfluorideremovalmaterialshadhighresistancetointerferencebyionsandhighfluorideremovalcapacity.Keywords:drinkingwaterfluoride-removalcapacitysilica/activatedaluminasilica/activatedmagnesiaresistancetoinreferencebyotherironsindrinkingwater20[12]7700[3][47][8][9]2.650mg/g[10][11][e-mail]:10.16085/j.issn.1000-6613.2007.08.0288·1171·12[4]11//1.1/10.20.27mmNa20.5mol/L1.0mol/L30min24h31.0mol/L12h410054003h1.2/(1)0.20.27mmNa(2)0.5mol/L1.0mol/L48h(3)1.0mol/L12h(4)100(5)5002h22.1////21l/mm/g·cm3/0.20.270.5673/0.20.270.84362.20.05mg/L2(mg/g)()oeCCVQM−×=Qmg/gComg/LCemg/LVLMg2.2.12pH22Q(CF=10mg/L15pH=6.05)/mg·g1Q(CF=10mg/L28pH=5.90)/mg·g1∆Q/mg·g1pH/2.500.981.526.77.5/1.920.501.428.59.5200726·1172·212pH0.15132215222pHpH/pH(6.58.5)/pHpH8.5pHpH102.2.2,33pH3/mg·L1Ca2+Mg2+HCO3SO42ClCO32FpH46.0316.24318.785.16158.26182.27.8212425g21.0mg/L424/mg·g1/mL·min1/mg·g1[8]//0.830.0540.1561.72178/1.000.0300.1021.00102[8]0.98mg/g41Q(/)Q(/)2//////2//3//348·1173·ClSO42Ca2+Mg2+1200100080060040020000.51.01.52.02.53.03.5/mg·g1/mg·L13/ClSO42Ca2+Mg2+1200100080060040020000.2/mg·g1/mg·L10.40.60.81.01.21.41.61.82.04/34:1Cl//Cl//2SO42/SO42/SO42(3)Ca2+///(4)Mg2+//421/pH6.57.5/pH8.59.5pHpH102///2.5mg/g/0.5mg/g2[1][M]1990[2]WangXCFluoridecontaminationofgroundwateranditsimpactsonhumanhealthininnerMongoliaarea[J]JournalWaterSRTAqua1999484146153[3][J]19961252932[4][J]()2002344325328[5][J]2006(10)1114[6][J]20022131619[7][J]200455397398[8]NigamanandaDas,PragyanPattanaik,RitaDasDefluoridationofdrinkingwaterusingactivatedtitaniumrichbauxite[J]JournalofColloidandInterfaceScience20052921110[9][J]1999194345348[10][J]200620101214[11]Ce2O2TiO2/SiO2[J]199861221492153