改性活性炭对苯废气吸附性能的研究张丽丹

:2001-08-13;:2002-01-16::(1957-),,,,,E-mail:Zhang)[e-mail]:1007-8827(2002)02-0041-04张丽丹1,赵晓鹏1,马群1,王琪1,郭坤敏2(1.,100029;2.,100083):,,,,,,,,,:,:;;:TQ424.1+1:A1[1,2][3],,,,,,,22.1HCl,150eNaOH,150e2.21,,,,,(FID)2.3BETBET2.4W1,W,800e,200e,,W2,800e,200e,,W3,,,Wn,:(%)=(Wn-W)W1@100%,W:(g),W1:(g),Wn:(g)17200226NEWCARBONMATERIALSVol.17No.2Jun.20021.2.3.4.5.6.7.8.9.10.11.Airpump2.Purifier3.Valve4.Flowmeter5.Vaporizer6.Mixer7.Threewayvalve8.Adsorbentbed9.Sixwayvalve10.ChromatographFig.1Adsorptionsetofnormalpressure33.1,SiO2,Al2O3,Fe2O3,MgO,CaO,K2O,Na2O,P2O5,,[4],,HClNaOHHCl,,:Al2O3+6HCly2AlCl3+3H2OMgO+2HClyMgCl2+H2ONa2O+2HCly2NaCl+H2OK2O+2HCly2KCl+H2OFe2O3+6HCly2FeCl3+3H2OCaO+2HClyCaCl2+H2O,,,:SiO2+OH-ySiO2-3+H2OAl2O3+OH-yAlO-2+H2OPbO2+OH-yPbO2-3+H2OP2O5+OH-yHPO2-4+H2O,11,3h,10%29h,9h31HClNaOHTable1SaturatedbenzeneadsorbabilityonmodifiedactivecarbonusingfordifferentconcentrationHClandNaOHtreatmentModifierBenzenesaturatedadsorbabilityW/mg#(100mg)-1Activecarbon5%modifier10%modifier15%modifierHCl16.6017.0019.6018.10NaOH16.6018.5019.6218.13Notes:Entrancebenzeneconcentration:7200mg/m3,Adsor.temp.25e,Immersetime:3h2Table2SaturatedbenzeneadsorbabilityonmodifiedactivecarbonusingfordifferentimmersestimeImmersetimet/hBenzenesaturatedadsorbabilityW/mg#(100mg)-1Activecarbonmodifiedin10%HClActivecarbonmodifiedin10%NaOH319.6019.62621.4820.17924.3321.811222.9221.59Notes:Entrancebenzeneconcentration:7200mg/m3,Adsor.temp.25e3Table3SaturatedbenzeneadsorbabilityonmodifiedactivecarbonusingforacidandalkalitreatmentBenzenesaturatedadsorbabilityW/mg#(100mg)-110%HCl10%NaOH9halternatingmodified26.97Notes:Entrancebenzeneconcentration:7200mg/m3,Adsor.temp.25e:,#42#17,3.2BET,,Langmuir,,,4,,,,,,,4Table4Specificsurfacearea,poreradiusandashcontentofmodifiedactivecarbonSamples(9hcuring)SpecificsurfaceareaA/m2#g-1Micropore/totalporevolumeV/%AshW/%Activatedcarbon737.8080.749.32Activecarbonmodifiedin10%HCl995.2082.741.03Activecarbonmodifiedin10%NaOH999.2482.760.93Activecarbonmodifiedalternatingmodifiedinacidandbase1395.4882.510.404(1)737.80m2/g1395.48m2/g657.68m2/g16.60mg/100mg26.97mg/100mg,10.37mg/100mg9.32W/%0.4W/%(2)BET,(3),,:[1].[J].,1998,(3):1-4.(YANTing-zhao.Recoverytechniqueofvolatileorganiccomponents[J].GansuChemicalIndustry,1998,(3):1-4.)[2].(VOC))))[J].,1996,(5):26-28.(YANYong.Purificationandrecoveringofvolatileorganiccompo-nentsinoff-gas)adsorptionbycarbonandfoam[J].ChemEngProgress,1996,(5):26-28.)[3].[J].,1978,(1):41-42.(LANShu-deng.Theapplicationofactivecarboninenvironmentalprotection[J].EnvironmentalProtection,1978,(1):41-42.)[4].[M].:,1984.73.(GAOShang-yu.FundamentalsandApplicationofActiveCarbon[M].Beijing:ChineseForestryPublishingHouse,1984.73.)#43#2:STUDYOFTHEADSORPTIONOFBENZENE-CONTAININGOFF-GASESONAMODIFIEDACTIVECARBONZHANGL-idan1,ZHAOXiao-peng1,MAQun1,WANGQi1,GUOKun-min2(1.CollegeofScience,BeijingUniversityofChemicalTechnology,Beijing100029,China;2.ResearchInstituteofChemicalDefense,Beijing100083,China)ABSTRACT:Activecarbonadsorptionisaneffectivemethodforthetreatinglowconcentrationbenzeneinindustrialwastegases.Onpreparingactivecarbonwithahighadsorptionabilityandlowcost,activecarbonsfromcoalwerestudied.Theactivecarbonwasmodifiedbyremovingimpuritiesusingbothacidandbasetreatments.Inthiswaytheashcontentwasreducedandthespecificsurfaceareawasincreasedwithanaccompanyingimprovementintheadsorp-tion.Bystudyingtheeffectsofdifferentmodifyingmethodsonsaturationadsorption,specificsurfacearea,porera-dius,specificsurfaceareaandashcontent,thebestprocedurewasdetermined.Theresultsclearlyshowthatthemethodoftreatingcoa-lbasedactivecarbonbyacidandbaseissimpleandeffectiveforincreasingadsorptionabilityandspecificsurfacearea.KEYWORDS:Benzene;Adsorption;ActivecarbonFoundationitem:TheProjectofScientificandTechnicalDepartmentofChemicalIndustryMinistryofChina.Authorintroduction:ZHANGL-idan(1957-),female,AssociateProfessor,majoredintheresearchofphysicalchemistryandtheresearchanddevelopmentofadsorption,catalysis.E-mail:Zhang)[e-mail]()1.[]..,,():.,[1],,,..,2001,16(4):1-6.(QIUJie-shan,HANHong-mei,ZHOUYing,etal.Carbonnanotubesfromtwobituminouscoals.NewCarbonMaterials(Chinese),2001,16(4):1-6.)[2]MordkovichVZ,BaxendaleM,YoshimuraS,etal.Intercalationintocarbonnanotubes.Carbon,1996,34(10):1301-1303.2.[]..(),:,..3.[].,,.4.[].,,,.5.[]....:,..6.[]..,/.,56#44#17