Kev xaiv ntawm ultrafiltration membrane pob
Xaiv cov khoom lim membrane
Hauv kev sib cais ntawm cov khoom siv roj ntsha, kev xaiv cov ntaub ntawv membrane yog qhov tseem ceeb heev. Nws yuav tsum ua tau raws li cov cai hauv qab no: tsis muaj protein ntau adsorption, tsawg DNA khi, siab rov qab tus nqi, loj flux, ruaj khov lub cev thiab tshuaj lom neeg thiab alkali ntxuav tsis kam. Tam sim no, cov ntaub ntawv tseem ceeb ntawm cov hnab ntim khoom lag luam yog polyvinylidene fluoride, regenerated cellulose thiab polyethersulfone, tab sis ob qho tib si tsis muaj alkali resistant thiab flux tsawg dhau, uas txwv tsis pub lawv daim ntawv thov; Polyethersulfone membrane yog xaiv raws li cov membrane coated substrate, uas muaj zoo heev physicochemical zog, acid thiab alkali tsis kam, tsis tshua muaj protein adsorption thiab loj flux. Nws yog qhov tsim nyog rau cov concentration thiab kev sib cais ntawm cov khoom siv roj ntsha.
Dab tsi yog ultrafiltration membrane
Raws li lub hauv paus ntsiab lus ntawm pore loj, qhov pore loj ntawm 2nm mus rau 0.1um tuaj yeem hu ua ultrafiltration membrane. Ultrafiltration tuaj yeem cais tshwj xeeb me me colloids thiab yaj macromolecules; Hauv txhua hom khoom siv, kev ua haujlwm ntawm ultrafiltration membrane nyob ntawm nws cov duab. Lub ultrafiltration membrane muaj cov qauv asymmetric, yog li cov khoom loj dua li qhov hnyav molecular cuam tshuam los ntawm daim nyias nyias yog cuam tshuam rau ntawm daim nyias nyias, thiab cov khoom me me raug tso cai kom dhau los ntawm cov qauv qis ntawm daim nyias nyias. Yog hais tias qhov chaw ntawm lub lim membrane yog du heev, kev cuam tshuam tawm los ntawm biomolecules thiab kab mob yuav nce. Vim yog cov qauv qis ntawm lub lim membrane, cov khoom xa mus sai sai, sib cais los ntawm ultrafiltration membrane thiab txheej txheej, thiab cov concentration polarization ntawm qhov chaw lim membrane raug tiv thaiv.
Kev xaiv ntawm ultrafiltration membrane pob
Yuav ua li cas xaiv qhov tsim nyog membrane pore loj rau concentration thiab sib cais ntawm ultrafiltration membrane pob? Raws li kev lag luam kev paub thiab cov yam ntxwv ntawm cov khoom siv roj ntsha, cov khoom siv hluav taws xob tau xaiv feem ntau yog 3 mus rau 6 npaug me dua li qhov loj me ntawm cov khoom siv los cuam tshuam, uas tuaj yeem tsis tsuas yog xyuas kom muaj qhov txaus txaus, tab sis kuj ua kom muaj siab. cov khoom rov qab tus nqi; Tsis tas li ntawd, kev xaiv ntawm kab sib chaws channel kuj tseem ceeb heev. Rau kev teeb tsa ntawm kab sib chaws, lub vijtsam tsim cov turbulence nyob rau hauv lub lim logistics lub cev, uas txo cov fouling ntawm lim membrane mus rau qhov loj tshaj; Nyob rau hauv txoj kev rov qab, cov kua dej configuration ntawm lub ncua kev kawm ntawv screen muaj ib tug ntau qhib qauv, thiab cov kev ua tau zoo yog zoo dua thaum soj ntsuam nrog viscous los yog particle ntom daws.
