Polyacrylamide: Polymer e sebetsang ka bongata indastering ea sejoale-joale
Polyacrylamide (PAM), ke polymer e nang le limolek'hule tse ngata tse qhibilihang ka metsing e bapalang karolo ea bohlokoa masimong a fapaneng a indasteri. Ke polymer e nkiloeng ho li-monomer tsa acrylamide, 'me indastering, li-polymer tse nang le li-unit tsa sebopeho sa acrylamide monomer tse fetang 50% hangata li bitsoa polyacrylamide.
PAM e ka aroloa ka mefuta e seng ea ionic, anionic, cationic, le amphoteric ho latela thepa ea eona ea ionic. PAM e seng ea ionic ha e na lihlopha tse ka ioniang ketaneng ea eona ea limolek'hule, PAM ea anionic e na le lihlopha tse chajileng hampe, PAM ea cationic e na le lihlopha tse chajileng hantle, 'me PAM ea amphoteric e na le lihlopha tse chajileng hampe le tse chajileng hantle.
Mekhoa ea tlhahiso ea PAM e kenyelletsa polymerization ea tharollo ea metsi, polymerization ea emulsion e khutlelang morao, le polymerization e qalileng ka mahlaseli. Polimerization ea tharollo ea metsi ke mokhoa oa khale ka ho fetisisa le o sebelisoang haholo ka lebaka la polokeho ea oona le litšenyehelo tse tlase. Polimerization ea emulsion e khutlelang morao e khethoa bakeng sa lits'ebetso tse sebetsang hantle, 'me polymerization e qalileng ka mahlaseli ke mokhoa o hlahang o ka hlahisang PAM mochesong o tloaelehileng ntle le lik'hemik'hale tse qalang.
PAME na le thepa e ntle haholo ea 'mele le ea lik'hemik'hale. E na le ho qhibiliha ho hotle ha metsi 'me e ka qhibiliha ka metsing a batang ho etsa tharollo e tiileng. Liketane tsa eona tse boima ba limolek'hule li ka etsa "marokho" pakeng tsa likaroloana tse monngoang, e leng se nolofalletsang ho phaphamala le ho senngoa ha likaroloana tse emisitsoeng ka metsing. Ho phaella moo, PAM e na le thepa ea ho teteana, ho khomarela le ho fokotsa ho hula.
Mabapi le likopo, PAM e sebelisoa haholo ho phekola metsi, merafo ea peterole, ho etsa pampiri le liindasteri tse ling. Ka ho hloekisa metsi, e ka sebelisoa e le flocculant ho sebelisana le coagulants tse kang PAC ho hlakisa likhoerekhoere tsa masepala, metsi a litšila a indasteri, le metsi a litšila a hlatsoang mashala. Indastering ea peterole, e sebelisoa e le sesebelisoa sa likhohola ho ntlafatsa ho hlaphoheloa ha oli. Ka indasteri ea ho etsa pampiri, e ka ntlafatsa sekhahla sa ho boloka li-filler le li-pigments le ho matlafatsa matla a pampiri.
Leha ho le joalo, ha u sebelisa PAM, mehato e meng ea tšireletso e lokela ho nkoa. Ka mohlala, e lokela ho qhibiliha ka metsing a hloekileng, 'me lebelo le susumetsang ha lea lokela ho ba ka potlako ho thibela ketane ea molek'hule hore e se ke ea robeha. Tekanyetso e lokela ho khethoa ka liteko tse nyane, hobane ts'ebeliso e feteletseng e tla etsa hore metsi a hlahelle le ho ama sedimentation.
Ka kakaretso, PAM ke polymer e feto-fetohang le ea bohlokoa. Ka nts'etsopele e tsoelang pele ea indasteri, menyetla ea ts'ebeliso ea eona e tla ba pharaletse, empa ka nako e ts'oanang, re lokela ho ela hloko ts'ebeliso ea eona e sireletsehileng le tšusumetso ea tikoloho.
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