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1、EvaluationofActivatedCarbonFibersforRemovalofVolatileOrganicCompoundsinIndoorEnvironmentsHuajunLuNeilZimmermanPhDCIHPurdueUniversitySchoolofHealthSciencesOct.,17th,2003OVERVIEWIntroductionofIndoorairquality(IAQ)PurposesofStudyMaterialsandMethodsTheoreticalBackgroundResultsConcl

2、usionsIAQBackgroundIndevelopingcountries,useofbiomassfuelsforcookingandheatingResultin2milliondeathannually.AssociatedwithadversepregnanciesIncreasetheriskofyoungchild’sseriousrespiratoryinfectionOne-halfofU.SschoolshaveproblemslinkedtoindoorairqualityproblemsRanksamongtopfivee

3、nvironmentalriskstopublichealthLostproductivityestimated$60billionperyearSourcesofConcernforIAQInadequateventilationHazardousgasessuchasCO,NOx,etc.FormaldehydeRespirableparticlesPesticidesBiologicalcontaminantsBacteriaMoldVirusesPollenVolatileorganiccompounds(VOCs)AdsorptionAds

4、orptionistheprocessoftrappinggasandvapormoleculeswithintheporesofamicroporoussolidsuchasactivatedcarbon.InfluencefactorsSurfaceinteractionsbetweenadsorbateandadsorbentSurfaceareaofadsorbatePoresizeofadsorbateAdsorptionmediaAlumina/potassiumpermanganateZeolite(molecularsieve)Gra

5、nularactivatedcarbon(GAC)Activatedcarbonfiber(ACF)WhyACF?ComparedtoGAC,ACFhasthefollowingadvantages:Greatlyimprovedcontactefficiencywithadsorbatesleadingtogreaterratesofadsorption,Superiorbreakthroughcapacityandexcellentadsorptionpropertiestolowconcentrationofcontaminants(Yue,e

6、tal.,2001).Availabilityoffeltorfabricforms:occupyingsmallerspaceElectricalreactivation:savingreactivationcost(Suzuki,1994,EconomyandLin,1976).WhatDoestheFiberLookLike?TypicalSEMmicrographofACF-15Dia.=16mReference:Foster,K.L.,Doctoraldissertation,UIUC,IL,1993TypicalSurfaceImage

7、ofSingleFiberReference:Foster,K.L.,Doctoraldissertation,UIUC,IL,1993TypicalCross-sectionImageofSingleFiberReference:Foster,K.L.,Doctoraldissertation,UIUC,IL,1993PurposesofStudyTodetermineadsorptionanddesorptionparametersforselectedVOCsonACFandtypicalindoormaterials;Toestablisha

8、nIAQmodelbasedonthesinkeffectsofindoormaterialsandadso