Qhov sib txawv tseem ceeb ntawm kev nqus thiab adsorption yog qhov nqus, ib yam khoom (tshwj xeeb lossis lub zog) siv lwm yam khoom rau hauv cov khoom ntawd thaum lub adsorption tsuas yog qhov sib cuam tshuam ntawm qhov chaw.
Sorption yog txheej txheem uas ib yam khoom siv los yog tuav lwm yam khoom. Qhov no tuaj yeem yog qhov tshwm sim tshuaj lom neeg txij li cov khoom siv tshuaj lom neeg koom nrog kev noj thiab tuav ob yam khoom. Sorption yog qhov zoo rau qee lub sijhawm, tab sis qee zaus nws tsis zoo ib yam. Piv txwv li, sorption tuaj yeem txo cov dej paug hauv av. Thaum peb ntxiv cov khoom paug rau hauv av, lawv nyiam cov av; Yog li, lawv txoj kev txav mus rau cov av hauv av tau qeeb qeeb. Thaum kawg, qhov no yuav ua rau muaj kab mob tsawg. Raws li cov tshuaj sorption tshwm sim sai, nws yuav siv sij hawm tsawg. Sorption tuaj yeem yog ob hom, nqus thiab adsorption.
Kev nqus yog dab tsi?
Hauv kev nqus, ib yam khoom raug coj mus rau hauv lub cev qauv ntawm lwm yam khoom. Cov khoom, uas yog absorbing rau lwm yam khoom, yog "absorbate." Cov khoom uas nqus cov absorbate yog "absorbent."
YPiv txwv li, yog tias cov organic molecule nkag mus rau hauv cov khoom siv (av particle), ces cov organic molecule yog absorbate, thiab cov av particle yog absorbent. Cov absorbent tuaj yeem yog cov roj, kua lossis cov khoom, qhov nqus tau tuaj yeem yog atom, ion lossis molecule. Feem ntau, absorbate thiab absorbent yog nyob rau hauv ob theem sib txawv.
Daim duab 01: Absorption vs Absorption
Cov cuab yeej nqus ntawm cov tshuaj siv rau ntau lub sijhawm. Piv txwv li, qhov no yog lub hauv paus ntsiab lus qab kua-kua extraction. Ntawm no, peb tuaj yeem rho tawm cov kua dej los ntawm ib cov kua mus rau lwm cov kua, vim hais tias cov kua dej yog absorbed ntau dua nyob rau hauv ib cov kua ntau dua li lwm yam thaum lawv nyob rau hauv tib lub thawv. Yuav kom nqus tau, lub absorbent yuav tsum muaj ib tug ntxeem tau qauv los yog txaus qhov chaw nyob rau hauv uas lub absorbate yuav haum. Ntxiv mus, lub absorbate molecule yuav tsum muaj ib tug haum loj, mus rau hauv lub absorbent qauv. Tsis tas li ntawd, lub zog txaus nyiam ntawm ob lub ntsiab lus pab txhawb txoj kev nqus. Ib yam li ib pawg; lub zog kuj tuaj yeem nqus tau (rau hauv cov khoom). Qhov no yog lub hauv paus tom qab spectrophotometric. Nyob ntawd, atoms, molecules lossis lwm hom nqus lub teeb.
Adsorption yog dab tsi?
Nyob rau hauv adsorption, ib yam khoom los yog lub zog yog attracted rau ib tug nto ntawm lwm yam teeb meem. Cov khoom nyiam yog "adsorbate", thiab qhov chaw yog "adsorbent." Lub attraction ntawm cov ntaub ntawv organic thiab activated charcoal yog ib qho piv txwv ntawm adsorption. Organic khoom yog adsorbate nyob rau hauv lub ntees no, thiab cov adsorbent yog activated charcoal.
Lwm qhov piv txwv ntawm adsorption yog nyiam cov protein mus rau biomaterial. Adsorption tshwm sim nyob rau hauv peb hom, lub cev adsorption, chemisorption, thiab electrostatic adsorption. Nyob rau hauv lub cev adsorption, tsis muaj zog van der Waals rog yog cov attracting rog. Nyob rau hauv chemisorption, qhov attraction yog tshwm sim los ntawm cov tshuaj tiv thaiv ntawm cov adsorbent thiab cov adsorbate. Raws li lub npe qhia, hauv electrostatic adsorption, electrostatic kev sib cuam tshuam yog tsim ntawm ions thiab cov chaw.
Qhov txawv ntawm qhov nqus thiab adsorption yog dab tsi?
Absorption vs Adsorption |
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| Nyob rau hauv kev nqus, ib yam khoom raug coj mus rau hauv lub cev qauv ntawm lwm yam khoom. | Nyob rau hauv adsorption, ib yam khoom los yog lub zog yog attracted rau ib tug nto ntawm lwm yam teeb meem. |
| tshuaj hom | |
| Ob yam khoom koom nrog hauv kev nqus yog nqus thiab nqus tau. | Ob yam khoom koom nrog hauv adsorption yog adsorbate thiab adsorbent. |
Summary – Absorption vs Adsorption
Absorption thiab adsorption yog ob hom txheej txheem sorption. Qhov sib txawv ntawm kev nqus thiab adsorption yog tias, hauv kev nqus, ib yam khoom (qhov teeb meem lossis lub zog) siv lwm yam khoom rau hauv cov khoom ntawd thaum lub adsorption tsuas yog qhov sib cuam tshuam ntawm qhov chaw.
