Ke lisebelisoa life ho tse 5 tsa lera la reverse osmosis tseo u sa li tsebeng?
01
Cellulose acetate membrane (CA membrane sheet)
Cellulose acetate ke karoloana e tšoeu e hlephileng kapa phofo e nang le fibrous, e sa nkhang hamonate, e seng chefo, e tsitsitseng e khanyang, le e nang le hygroscopic haholo. Hajoale ke sesebelisoa se ithutoang haholo sa reverse osmosis membrane. Le hoja cellulose acetate e le lisebelisoa tse ntle tsa membrane, - COOR ka ketane ea eona ea molek'hule e etsa hore ho be bonolo ho hydrolyze tlas'a maemo a phahameng a mocheso le acid-base, 'me alkaline kapa acidic hydrolysis e ka etsa hore sehlopha sa acetyl se nyamele. Ka hona, tšebeliso ea lisebelisoa tse hloekileng tsa CA e tlas'a mefokolo e itseng.
02
Filimi e nkhang hamonate ea polyamide (PA membrane sheet)
Li-polyamides tse nkhang hamonate li sebelisoa haholo indastering ea membrane ka lebaka la botsitso ba 'mele le lik'hemik'hale, ho hanyetsa li-alkali tse matla, li-ester tsa oli, le li-solvents tsa organic, le matla a matle a mochini. Leha ho le joalo, ka lebaka la tlhaho e qosoang ea li-membrane tsa PA tse sebetsang ho pH 6-10, likaroloana tse metsing li na le tšekamelo ea ho beha holim'a lera, li fokotsa bophelo ba eona ba tšebeletso.
03
Chitosan membrane (CS membrane sheet)
Chitosan (CS) e fumanoa ka ho tlosa lihlopha tsa acetyl ho limolek'hule tsa chitosan. E na le mehloli e mengata e fapaneng, thepa e ntle ea ho etsa lifilimi le biocompatibility, 'me e bonolo ho fetola lik'hemik'hale. Ka lebaka la sebopeho sa eona sa limolek'hule, metsi a hloekileng a sebelisoang ho reverse osmosis a ka theha maqhama a matla a hydrogen le limolek'hule tsa metsi, 'me matla a eona a ho tlosa li-ion tsa tšepe tsa lefatše tsa alkaline a matla. Ka hona, e phahametse li-membrane tsa CA le li-membrane tsa polyamide 'me e nkoa e le lisebelisoa tse tšepisang haholo, tse fumaneng tlhokomelo e pharaletseng linaheng tse ling. Cs reverse osmosis membrane e na le phallo e phahameng le khetho, 'me e na le phello e ntle ea ho tlosa letsoai la divalent metal. Ka lebaka la khanyetso ea eona e matla ea alkali le ho hanyetsa acid ka mor'a ho kopana, li-membrane tsa Cs ha li khone ho ikatisa habonolo 'me hangata li sebelisoa e le li-membrane tsa reverse osmosis bakeng sa ho nolofatsa metsi a thata.
04
Polyphenylene reverse osmosis membrane
Lisebelisoa tsa polyphenylene tse kang polybenzimidazole (PBD) le polyphenylene oxide (PPO) le tsona li hohetse tlhokomelo e atileng ka lebaka la ho hanyetsa mocheso o phahameng, ho hanyetsa acid le alkali, 'me li ka fetoloa ho fumana lisebelisoa tse molemo tsa filimi tse tšesaane.
05
Li-membrane tse ling tse kopaneng tsa reverse osmosis
Composite reverse osmosis membrane ke mofuta oa lera o kopanyang lera le tšesaane, le teteaneng la lisebelisoa tse fapaneng tse nang le mesebetsi e khethehileng ea karohano holim'a substrate e tšehetsang porous. E na le sekhahla se phahameng sa karohano ea solute le sekhahla sa ho kenella ha metsi ho feta li-membrane tse kopaneng, ka hona e na le karolo ea 'maraka e fetang 90%. Hajoale, li-membrane tsa composite reverse osmosis li sebelisitsoe haholo masimong a kang li-petrochemicals, lisebelisoa tsa elektroniki, masela, indasteri e bobebe, metallurgy, meriana, biotechnology, lijo le ts'ireletso ea tikoloho.