Dab tsi yog qhov txawv ntawm cation thiab anion exchange resin?
Thaum nws los txog rau dej softening thiab purification, ion exchange resin yog ib txoj kev siv los tshem tawm cov kab mob. Cov txheej txheem no suav nrog kev siv cation lossis anion txauv resin, nyob ntawm seb hom kab mob uas yuav tsum tau muab tshem tawm. Tab sis dab tsi yog qhov txawv ntawm cation thiab anion exchange resin?
Ua ntej, cia peb nkag siab lub hauv paus ntawm ion exchange resin. Txoj kev no suav nrog kev sib pauv ions tam sim no hauv dej nrog ions tam sim no ntawm cov hlaws hlaws. Piv txwv li, hauv dej tawv, calcium thiab magnesium ions muaj nyob, uas tuaj yeem hloov nrog sodium ions tam sim no ntawm cov hlaws hlaws. Qhov no ua rau cov dej softening, vim sodium ions tsis ua rau hardness.
Tam sim no, los rau qhov sib txawv ntawm cation thiab anion txauv resin. Cation exchange resin yog siv los tshem tawm cov ions zoo li calcium, magnesium, thiab hlau, uas yog lub luag haujlwm rau hardness. Cov resins no muaj sulfonate-functionalized polymers, uas muaj qhov chaw tsis zoo kom nyiam cov ions zoo. Thaum sib cuag nrog cov hlaws hlaws, cov ions pauv nrog cov sodium ions hauv cov resin, ua rau cov dej softening.
Ntawm qhov tod tes, anion txauv resin yog siv los tshem tawm cov ions tsis zoo xws li nitrate, sulfate, thiab fluoride. Cov resins no muaj amine-functionalized polymers, uas muaj qhov zoo them qhov chaw kom nyiam cov ions tsis zoo. Thaum sib cuag nrog cov hlaws hlaws, cov ions pauv nrog cov chloride ions hauv cov resin, ua rau tshem tawm cov kab mob no.
Thaum ob qho tib si cation thiab anion txauv resin ua haujlwm ntawm tib lub hauv paus ntsiab lus ntawm kev sib pauv ion, lawv txawv ntawm hom ions lawv tuaj yeem tshem tawm. Cation exchange resin yog siv rau kev tshem tawm cov ions zoo li calcium thiab magnesium, thaum anion exchange resin yog siv rau kev tshem tawm cov tsis zoo ions xws li nitrate thiab fluoride. Kev nkag siab txog qhov sib txawv ntawm ob hom resin no yog qhov tseem ceeb rau kev xaiv cov resin txoj cai rau kev lim dej thiab muag muag.
