Eminyakeni embalwa edlule, ama-membrane e-graphene oxide asetshenziswe kakhulu ekususeni usawoti emanzini olwandle kanye nokuhlukaniswa kodayi. Kodwa-ke, ama-membrane anezindlela eziningi zokusetshenziswa, njengemboni yokudla.
Ithimba locwaningo elivela e-Global Aquatic Innovation Center yaseShinshu University lifunde ukusetshenziswa kwe-graphene oxide membranes ebisini. Lolu hlobo lwe-membrane luvame ukwakha ungqimba olunodaka olujiyile (i-carbon, “i-Graphene oxide membranes yobisi olungenayo i-lactose” kuma-polymer membranes.).
Vala ulwelwesi lwe-graphene oxide olugcwele i-lactose namanzi; shiya amafutha, amaprotheni nama-macromolecule obisini.
Ama-membrane e-graphene oxide anenzuzo yokukhiqiza izendlalelo ezimboziwe, ngakho-ke ukusebenza kwawo kokuhlunga kungagcinwa kangcono kune-membrane ye-polymer yezohwebo. I-chemistry eyingqayizivele kanye nesakhiwo esinezingqimba se-membrane ye-graphene oxide kuvumela ukuthuthukisa ukungena kwe-lactose namanzi, kuyilapho kuxosha amafutha, amaprotheni kanye namaminerali athile. Ngakho-ke, ukuthungwa, ukunambitheka kanye nenani lokudla okunempilo kobisi kungagcinwa kangcono uma kuqhathaniswa namafilimu e-polymer ezohwebo.
Ngenxa yesakhiwo esiyingqayizivele sesendlalelo se-porous fouling kanye ne-graphene oxide membrane, ukugcwala kwe-lactose kanye ne-lactose permeation flux kuphakeme kakhulu kunokwe-commercial nanofiltration membranes. Ngokusebenzisa i-support membrane enosayizi we-pore ongu-1 μm njenge-graphene oxide membrane, ukungcola okungenakuguqulwa kuyathuthuka. Lokhu kuholela ekwakhekeni kwesendlalelo se-porous fouling, okwenza kube nesilinganiso esiphezulu sokululama kwe-flux yamanzi ngemva kokuba ubisi seluhlungiwe.
Iqokomisa ukusebenza kwayo okuhle kakhulu kokuvimbela ukungcola kanye nokukhetha okuphezulu kwe-lactose, lo msebenzi ophambili ubonisa ukusetshenziswa kwe-graphene oxide membranes embonini yokudla, ikakhulukazi embonini yobisi. Le ndlela igcina amandla amakhulu okususa ushukela eziphuzweni, ngenkathi igcina ezinye izithako, ngaleyo ndlela ikhulisa inani lazo lokudla okunempilo.
Izakhiwo eziphezulu zokuvimbela ukungcola kwezixazululo ezicebile ngezinto eziphilayo (njengobisi) zenza kube ukukhetha okuhle kwezinye izinhlelo zokusebenza (njengokwelashwa kwamanzi amdaka kanye nezinhlelo zezokwelapha). Iqembu lihlela ukuqhubeka nokuhlola ukusetshenziswa kwefilimu ye-graphene oxide.
Lo msebenzi usekelwe emiphumeleni yocwaningo yangaphambilini yeqembu, okungukuthi ukudalwa kwama-membrane e-graphene oxide afuthwe (“I-NaCl ephumelelayo kanye nokwenqatshwa kodayi kwama-membrane e-hybrid graphene oxide/graphene layered”) ukuze kukhishwe usawoti emanzini olwandle ku-nanotechnology yemvelo. I-membrane ikhombisa ukuzinza kwamakhemikhali okuthuthukisiwe ngokungeza izendlalelo ezimbalwa ze-graphene, kuyilapho ibonisa ukusebenza okuzinzile kokuhlunga ngemva kwezinsuku ezinhlanu zokusebenza. Ngaphezu kwalokho, indlela yokufaka i-spray ithembisa kakhulu maqondana nokukhula.
Iqokomisa ukusebenza kwayo okuhle kakhulu kokuvimbela ukungcola kanye nokukhetha okuphezulu kwe-lactose, lo msebenzi ophambili ubonisa ukusetshenziswa kwe-graphene oxide membranes embonini yokudla, ikakhulukazi embonini yobisi. Le ndlela igcina amandla amakhulu okususa ushukela eziphuzweni, ngenkathi igcina ezinye izithako, ngaleyo ndlela ikhulisa inani lazo lokudla okunempilo.
Izakhiwo eziphezulu zokuvimbela ukungcola kwezixazululo ezicebile ngezinto eziphilayo (njengobisi) zenza kube ukukhetha okuhle kwezinye izinhlelo zokusebenza (njengokwelashwa kwamanzi amdaka kanye nezinhlelo zezokwelapha). Iqembu lihlela ukuqhubeka nokuhlola ukusetshenziswa kwefilimu ye-graphene oxide.
Lo msebenzi usekelwe emiphumeleni yocwaningo yangaphambilini yeqembu, okungukuthi ukudalwa kwama-membrane e-graphene oxide afuthwe (“I-NaCl ephumelelayo kanye nokwenqatshwa kodayi kwama-membrane e-hybrid graphene oxide/graphene layered”) ukuze kukhishwe usawoti emanzini olwandle ku-nanotechnology yemvelo. I-membrane ikhombisa ukuzinza kwamakhemikhali okuthuthukisiwe ngokungeza izendlalelo ezimbalwa ze-graphene, kuyilapho ibonisa ukusebenza okuzinzile kokuhlunga ngemva kwezinsuku ezinhlanu zokusebenza. Ngaphezu kwalokho, indlela yokufaka i-spray ithembisa kakhulu maqondana nokukhula.
Isikhathi sokuthunyelwe: Julayi-20-2021
