Cov pa roj carbon activated muaj qhov sib txawv ntawm lub cev thiab tshuaj lom neeg vim muaj cov khoom sib txawv thiab kev tsim khoom, uas ua rau nws muaj peev xwm adsorption sib txawv. Feem ntau, thaum cov adsorbent tsawg-molecular, txiv maj phaub plhaub tau txais cov pa roj carbon nrog micropores yog qhov tsim nyog, thiab cov pa roj carbon activated ntawm cov thee yog qhov tsim nyog rau kev daws cov khoom adsorbent los ntawm qis-molecular mus rau loj-molecule.
Qhov loj dua qhov chaw tshwj xeeb ntawm cov pa roj carbon activated, qhov muaj zog decolorization muaj peev xwm. Txawm li cas los xij, nyob rau hauv cov ntsiab lus ntawm cov tshuaj adsorption, nws tsis yog qhov tseeb heev los xaiv cov pa roj carbon activated tsuas yog raws li kev ua haujlwm dav dav los ntawm cov chaw tsim khoom siv hluav taws xob, xws li methylene xiav adsorption peev, iodine tus nqi, phenol tus nqi adsorption muaj peev xwm thiab thaj chaw tshwj xeeb. Tshwj xeeb, cov pab pawg ua haujlwm ntawm cov organic impurities hauv syrup feem ntau yog hydroxyl (phenol hom) thiab carboxyl pawg, uas yooj yim ua rau cov polarity ntawm cov pa roj carbon activated. Qhov saum npoo ntawm cov pa roj carbon activated tuaj yeem raug them zoo lossis tsis zoo, yog li kev sib xyaw ua ke nrog cov organic impurities hauv syrup. Hauv qhov no, qhov tsim nyog cov pa roj carbon activated yuav tsum raug xaiv los ntawm kev kuaj decolorization ntawm cov kua dej tiag tiag.
