sieve kwayoyin abu ne mai yuwuwa wanda ke da ƙananan ramuka masu girman iri ɗaya. Yana aiki kamar sieve na dafa abinci, sai dai akan sikelin kwayoyin halitta, yana raba gaurayawan iskar gas masu dauke da kwayoyin halitta masu girma dabam. Kwayoyin da ke ƙasa da pores ne kawai za su iya wucewa; yayin da, manyan kwayoyin suna toshe. Idan kwayoyin da kuke son raba girmansu iri daya ne, simintin kwayoyin zai iya rabuwa ta hanyar polarity. Ana amfani da sikeli a aikace-aikace iri-iri azaman danshi yana cire abubuwan bushewa kuma yana taimakawa hana lalata samfuran.
Nau'in Sieves na Kwayoyin Halitta
Siffofin kwayoyin halitta suna zuwa iri daban-daban kamar 3A, 4A, 5A da 13X. Ma'auni na ƙididdigewa suna bayyana girman ramuka da sinadarai na sieve. An canza ions na potassium, sodium, da calcium a cikin abun da ke ciki don sarrafa girman pore. Akwai lambobi daban-daban na raga a cikin daban-daban sieves. Ana amfani da sieve na ƙwayoyin cuta tare da ƙaramin adadin raga don raba iskar gas, kuma wanda yake da ƙarin raga ana amfani dashi don ruwa. Sauran mahimman sigogi na sieves na kwayoyin sun haɗa da nau'i (foda ko bead), yawan yawa, matakan pH, yanayin sake farfadowa (kunnawa), danshi, da dai sauransu.
Molecular Sieve vs. Silica Gel
Hakanan za'a iya amfani da gel na silica azaman danshi mai cire desiccant amma ya sha bamban da sieve kwayoyin halitta. Abubuwa daban-daban waɗanda za a iya la'akari da su yayin zabar tsakanin su biyu sune zaɓuɓɓukan haɗuwa, canje-canje a cikin matsa lamba, matakan danshi, sojojin inji, kewayon zafin jiki, da dai sauransu. Maɓallin bambance-bambance tsakanin sieve kwayoyin da silica gel sune:
Adadin adsorption na sieve kwayoyin ya fi na silica gel. Wannan saboda sieve shine wakili mai bushewa da sauri.
Siffar kwayoyin halitta tana aiki mafi kyau fiye da gel silica a cikin yanayin zafi, saboda yana da tsari iri ɗaya wanda ke ɗaure ruwa da ƙarfi.
A ƙananan Danshi mai ɗanɗano, ƙarfin sieve kwayoyin ya fi na silica gel.
An bayyana tsarin sieve na kwayoyin halitta kuma yana da pores iri ɗaya, yayin da tsarin gel na silica yana da amorphous da ƙananan pores marasa daidaituwa.
Yadda ake Kunna Sieves na Kwayoyin Halitta
Don kunna sieves na kwayoyin halitta, ainihin abin da ake buƙata shine fallasa zuwa babban yanayin zafi, kuma zafi ya kamata ya yi girma don adsorbate ya yi tururi. Zazzabi zai bambanta tare da kayan da ake tallatawa da nau'in adsorbent. Za a buƙaci kewayon zafin jiki akai-akai na 170-315oC (338-600oF) don nau'ikan sieves ɗin da aka tattauna a baya. Dukansu kayan da ake tallatawa, da kuma adsorbent suna mai zafi a wannan zafin jiki. Bushewar bushewa hanya ce mafi sauri ta yin wannan kuma tana buƙatar ƙananan yanayin zafi idan aka kwatanta da bushewar harshen wuta.
Da zarar an kunna, za a iya adana sieves a cikin akwati na gilashi tare da nannade biyu. Wannan zai sa su kunna har zuwa watanni shida. Don bincika idan sieves suna aiki, zaku iya riƙe su a hannun ku yayin sanye da safar hannu kuma ku ƙara musu ruwa. Idan sun kasance gaba ɗaya aiki, to, yawan zafin jiki ya tashi sosai, kuma ba za ku iya riƙe su ba ko da lokacin safofin hannu.
Ana ba da shawarar yin amfani da kayan aiki na aminci kamar PPE kits, safar hannu, da gilashin aminci kamar yadda tsarin kunna sieves na ƙwayoyin cuta ya haɗa da ma'amala da yanayin zafi da sinadarai, da haɗarin haɗari.
Lokacin aikawa: Mayu-30-2023
