Kev kho ntawm Chromium muaj cov dej khib nyiab los ntawm Electroplating Activated Carbon nrog Hluav Taws Xob Hluav Taws Xob Tube
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Kev kho ntawm Chromium muaj cov dej khib nyiab los ntawm Electroplating Activated Carbon nrog Hluav Taws Xob Hluav Taws Xob Tube
Tus nqi pH thiab qhov kub thiab txias ntawm cov dej phwj tuaj kuj muaj feem cuam tshuam rau cov adsorption ntawm activated carbon. Cov pa roj carbon activated feem ntau muaj peev xwm adsorption ntau dua nyob rau hauv acidic tej yam kev mob dua li nyob rau hauv alkaline tej yam kev mob. Cov tshuaj tiv thaiv adsorption feem ntau yog cov tshuaj tiv thaiv exothermic, yog li qhov kub tsis tshua muaj txiaj ntsig zoo rau cov tshuaj tiv thaiv adsorption.
Ntawm chav kawm, lub peev xwm adsorption ntawm cov pa roj carbon activated muaj feem xyuam rau cov concentration ntawm cov dej khib nyiab. Ntawm qhov kub thiab txias, lub peev xwm adsorption ntawm cov pa roj carbon activated nce nrog qhov nce ntawm qhov sib npaug ntawm cov khoom adsorbed.
3. Kev siv cov pa roj carbon activated hauv kev kho dej khib nyiab
Vim tias qhov kev xav tau siab rau kev kho dej ua ntej thiab tus nqi siab ntawm cov pa roj carbon activated, cov pa roj carbon activated feem ntau yog siv los tshem tawm cov kab mob hauv cov dej khib nyiab kom ua tiav kev ntxuav kom tob.
3.1 Activated carbon kho ntawm chromium uas muaj dej khib nyiab
Chromium yog cov khoom siv hlau uas muaj nyiaj ntau hauv electroplating, thiab hexavalent chromium muaj nyob rau hauv cov ntaub ntawv sib txawv hauv cov dej khib nyiab nrog cov pH sib txawv.
Cov pa roj carbon activated muaj cov qauv tsim microporous zoo thiab thaj chaw siab tshwj xeeb, uas muaj peev xwm adsorption lub cev muaj zog thiab tuaj yeem adsorb Cr (VI) hauv dej khib nyiab. Muaj ntau pawg uas muaj pa oxygen nyob rau saum npoo ntawm cov pa roj carbon activated, xws li hydroxyl (- OH) thiab carboxyl (- COOH), uas muaj electrostatic adsorption muaj nuj nqi thiab tsim tshuaj adsorption ntawm Cr (VI). Nws tuaj yeem siv tag nrho los kho Cr (VI) hauv electroplating wastewater, thiab cov dej khib nyiab adsorbed tuaj yeem ua tau raws li cov qauv kev tawm hauv lub tebchaws.
Qhov kev sim tau pom tias thaum qhov loj ntawm Cr (VI) nyob rau hauv cov tshuaj yog 50mg / L, pH =3, thiab lub sij hawm adsorption yog 1.5 teev, adsorption kev ua tau zoo ntawm activated carbon thiab tshem tawm tus nqi ntawm Cr (VI. ) ua tiav cov txiaj ntsig zoo tshaj plaws.
Yog li ntawd, cov txheej txheem ntawm kev siv cov pa roj carbon activated los kho cov chromium uas muaj cov dej khib nyiab yog qhov tshwm sim los ntawm cov txiaj ntsig zoo ntawm lub cev adsorption, tshuaj adsorption, thiab tshuaj txo qis ntawm Cr (VI) hauv kev daws los ntawm cov pa roj carbon activated. Activated carbon kev kho mob ntawm chromium uas muaj cov dej khib nyiab muaj qhov ua haujlwm ruaj khov adsorption, kev kho mob siab, cov nqi khiav lag luam qis, thiab qee cov txiaj ntsig kev noj qab haus huv.
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