Cov adsorbent adsorbs VOCs hauv cov roj,cescov pa purified yog tawm mus rau hauv qhov chaw. Cov pa roj carbon activated muaj kev ua haujlwm zoo adsorption thiab tsim nyog tus nqi kom zoo dua,nwsyog cov adsorbent feem ntau siv. Txoj kev tshawb no qhia tau hais tias activated carbon muaj ib tugzoopurification nyhuv ntawm VOCs nrog ib tug loj concentration ntawm txog 100 mg / m3, thiab covlub neejyog ntau tshaj 1000h. Siv cov tshuaj tshwj xeeb impregnated rauuaactivated carbon,uasmuaj cov nyhuv adsorption zoorausulfur, hydrogen sulfide, benzene, acetone, octane chav thiab lwm yam roj,thiab nwstau siv davnyob rau hauv cov chaw tshwj xeeb thiab kev lag luam tshwj xeeb.
Tsis tas li ntawd, activated carbon fiber (ACF) muaj kev coj tus cwj pwm zoo dua li cov pa roj carbon activated, nws's nrog loj adsorption muaj peev xwm, ceev ceev adsorption thiab desorption ceev, zoo adsorption selectivity, piv nrog zoo tib yam activated carbon muaj zoo adsorption nyhuv nyob rau hauv lub adsorption concentration yog tsawg, yog li activated carbon fiber adsorption tau dav siv nyob rau hauv lub roj theem.
Cov pa roj carbon activated adsorbent tau hloov kho kom nws muaj qhov zoo dua adsorption thiab desorption kev ua haujlwm. Kev hloov kho adsorbent feem ntau suav nrog kev hloov kho cov qauv saum npoo thiab kev hloov kho tshuaj lom neeg. Hloov kho cov pa roj carbon monoxide feem ntau muaj thaj tsam loj dua, cov qauv pore nplua nuj, qhov sib txawv ntawm qhov pore loj dua, thiab kev ua kom zoo dua adsorption rau cov khoom sib txawv. Cov nyhuv adsorption ntawm qee yam tshuaj yog txhim kho thiab lwm yam khoom. Yog li ntawd, nws yog tsim nyog rau adsorption thiab purification ntawm txawv pollutants. Cov pa roj carbon activated yog impregnated thiab hloov nrog HNO3, H2SO4, HCl, H3PO4, CH3COOH, KOH, thiab NaOH cov kev daws teeb meem los ntxuav cov roj khib nyiab sib xyaw ntawm benzene, toluene, xylene, methanol, ethanol, isopropanol, thiab butanone. Txoj kev tshawb nrhiav pom tias lub peev xwm adsorption ntawm cov pa roj carbon activated tom qab hloov kho cov tshuaj alkali raug txo, ntawm cov kua qaub - hloov pauv, kev ua haujlwm ntawm cov pa roj carbon activated impregnated nrog H3PO4 nce ntau tshaj. Tsuas yog qhov txo qis ntawm qhov muaj peev xwm adsorption ntawm m - xylene thiab butanone, lub peev xwm adsorption ntawm lwm cov pa phem tau zoo tuaj. Qhov no yog vim qhov txo qis hauv qhov muaj peev xwm adsorption ntawm ob yam khoom yog vim kev hloov kho ntawm phosphoric acid, uas txo cov peev xwm ntawm cov pa roj carbon activated rau adsorb macromolecular organic tshuaj. Nyob rau tib lub sijhawm, txawm hais tias phosphoric acid nqaim cov micropores ntawm cov pa roj carbon activated, nws hloov nws qhov chaw, uas ua rau cov khoom siv tshuaj lom neeg ntawm cov hloov kho cov pa roj carbon monoxide nce lub peev xwm adsorption ntawm lwm cov organic tshuaj.
Thaum cov pa roj carbon monoxide muaj cov pa hluav taws xob, muaj kev nyab xeeb kev nyab xeeb vim cov cua sov tsim thaum lub sij hawm adsorption. Txoj kev daws teeb meem yog txwv tsis pub VOCs cov ntsiab lus ntawm cov cua nkag mus rau tsawg dua 25 %, thiab huab cua dilution yog ib txoj hauv kev ua tau. Thaum qhov hnyav molecular ntawm VOCs ntau dua 130 thiab muaj qhov tsis haum (qhov kub ntawm qhov kub siab tshaj 240 degree), cov adsorbent yuav ua rau nws nqus tau, uas yuav ua rau nyuaj rau desorption.. On qhov tsis sib xws, thaum qhov hnyav molecular ntawm VOCs tsawg dua 45, qhov adsorption tsis muaj zog, thiab Rau kev sib xyaw - hom organic khib nyiab, thaum qhov hnyav molecular ntawm cov organic teeb meem hauv cov pa khib nyiab sib txawv ntau dhau, cov nyhuv adsorption yog. tsis zoo. Yog li ntawd, txoj kev adsorption yuav tsum tau txais kev pom zoo raws li qhov xwm txheej ntawm cov pa roj carbon monoxide.
