Cov pa roj carbon activated

Cov pa roj carbon activated, qee zaum hu ua activated charcoal, yog ib qho adsorbent tshwj xeeb uas tau txais txiaj ntsig rau nws cov qauv ntxeem tau uas tso cai rau nws kom ntes tau thiab tuav cov ntaub ntawv zoo.

Siv dav hauv ntau qhov kev lag luam los tshem tawm cov khoom tsis zoo los ntawm cov kua lossis roj, cov pa roj carbon activated tuaj yeem siv rau ntau qhov kev siv uas yuav tsum tau tshem tawm cov kab mob lossis cov khoom tsis zoo, los ntawm dej thiab huab cua purification, mus rau kev kho av, thiab txawm kub. rov qab los.

Muab ntawm no yog ib tug txheej txheem cej luam ntawm no incredibly ntau yam khoom.

ACTIVATED CARBON yog dab tsi?
Cov pa roj carbon activated yog cov khoom siv carbon uas tau ua tiav kom ua tiav nws cov khoom adsorptive, yielding cov khoom adsorbent zoo tshaj.

Activated carbon boasts ib tug impressive pore qauv uas ua rau nws muaj ib tug heev deg cheeb tsam uas yuav ntes thiab tuav cov ntaub ntawv, thiab yuav ua tau los ntawm ib tug xov tooj ntawm carbon-nplua nuj organic cov ntaub ntawv, xws li:

Txiv maj phaub
Ntoo
Thee
Peat
Thiab ntau…
Nyob ntawm cov khoom siv, thiab cov txheej txheem siv los tsim cov pa roj carbon monoxide, lub cev thiab tshuaj lom neeg ntawm cov khoom kawg tuaj yeem sib txawv ntau.² Qhov no tsim cov matrix ntawm kev muaj peev xwm hloov pauv hauv kev lag luam tsim carbons, nrog ntau pua hom muaj. Vim li no, kev lag luam tsim cov pa roj carbon monoxide tshwj xeeb kom ua tiav cov txiaj ntsig zoo tshaj plaws rau daim ntawv thov.

Txawm hais tias qhov kev hloov pauv no, muaj peb yam tseem ceeb ntawm activated carbon tsim:

Powdered Activated Carbon (PAC)

Powdered activated carbons feem ntau poob rau hauv qhov loj me me ntawm 5 txog 150 Å, nrog qee qhov ntau thiab tsawg. PAC's feem ntau yog siv rau hauv cov ntawv thov ua kua-theem adsorption thiab muab cov nqi txo qis thiab ua haujlwm yooj yim.

Granular Activated Carbon (GAC)

Granular activated carbons feem ntau nyob rau hauv qhov ntau thiab tsawg ntawm 0.2 hli mus rau 5 hli thiab tuaj yeem siv tau rau hauv ob qho tib si roj thiab kua theem daim ntawv thov. GACs yog nrov vim lawv muab kev tuav huv thiab zoo li yuav kav ntev dua PACs.

Tsis tas li ntawd, lawv muaj kev txhim kho lub zog (hardness) thiab tuaj yeem rov tsim dua thiab rov siv dua.

Extruded Activated Carbon (EAC)

Extruded activated carbons yog cylindrical pellet khoom xws li qhov loj ntawm 1 hli mus rau 5 hli. Feem ntau siv nyob rau hauv cov roj theem cov tshuaj tiv thaiv, EACs yog lub luag hauj lwm hnyav activated carbon raws li cov txheej txheem extrusion.

Yam ntxiv

Ntxiv ntau hom activated carbon muaj xws li:

Bead Activated Carbon
Impregnated carbon
Polymer Coated Carbon
Activated Carbon Cloths
Activated Carbon Fibers
PROPERTIES NTAWM ACTIVATED CARBON
Thaum xaiv cov pa roj carbon activated rau ib daim ntawv thov, ntau yam yam ntxwv yuav tsum xav txog:

Pore ​​Structure

Cov qauv pore ntawm cov pa roj carbon activated sib txawv thiab feem ntau yog los ntawm cov khoom siv thiab cov txheej txheem ntawm kev tsim khoom.¹ Cov qauv pore, ua ke nrog cov rog txaus nyiam, yog qhov tso cai rau adsorption tshwm sim.

Hardness/Abrasion

Hardness / abrasion kuj yog ib qho tseem ceeb ntawm kev xaiv. Ntau daim ntawv thov yuav xav tau cov pa roj carbon activated kom muaj lub zog particle siab thiab tiv thaiv kom tsis txhob raug mob (kev tawg ntawm cov khoom siv rau hauv kev nplua). Cov pa roj carbon activated uas ua los ntawm cov txiv maj phaub plhaub muaj qhov nyuaj tshaj plaws ntawm activated carbons.4

Adsorptive Properties

Lub zog nqus ntawm cov pa roj carbon activated encompass ob peb yam ntxwv, nrog rau lub peev xwm adsorptive, tus nqi ntawm adsorption, thiab tag nrho cov txiaj ntsig ntawm activated carbon.4

Nyob ntawm daim ntawv thov (kua lossis roj), cov khoom no yuav raug qhia los ntawm ntau yam, suav nrog tus lej iodine, thaj chaw nto, thiab Carbon Tetrachloride Activity (CTC).4

Pom Ntsig

Thaum pom tseeb qhov ceev yuav tsis cuam tshuam rau adsorption ib chav tsev qhov hnyav, nws yuav cuam tshuam rau qhov adsorption ib chav tsev ntim.4

Moisture

Qhov zoo tshaj plaws, tus nqi ntawm lub cev noo noo nyob hauv cov pa roj carbon activated yuav tsum poob li ntawm 3-6%.

Tshauv Ntsiab Lus

Cov hmoov tshauv ntawm cov pa roj carbon activated yog ib qho kev ntsuas ntawm inert, amorphous, inorganic, thiab siv tsis tau ib feem ntawm cov khoom. Cov ntsiab lus tshauv yuav zoo li tsawg li tsawg tau, vim qhov zoo ntawm cov pa roj carbon activated nce ntxiv thaum cov hmoov tshauv txo. 4