He ʻenehana hou e hoʻomaikaʻi i ke koho kiʻekiʻe a me ka anti-fouling o nā membrane reverse osmosis.

Ua hoʻokipa nui ʻia ka ʻenehana Reverse osmosis (RO) ma muli o kona hoʻohana ākea no ka hoʻohemo ʻana i ka wai paʻakai a me ke kai. ʻO nā membranes osmosis hoʻohuli ʻo TFC (TFC) polyamide (PA) i loko o kahi papa hoʻokaʻawale ākea a me kahi papa kākoʻo porous, ʻo ia nā huahana alakaʻi i kēia kahua. Eia nō naʻe, ʻo ka haʻahaʻa haʻahaʻa o nā membrane PA RO a me ka hoʻoheheʻe ʻana o ka TFC reverse osmosis membranes e kaupalena i ka hoʻohana nui ʻana o nā membrane PA RO TFC. googletag.cmd.push(hana() {googletag.display('div-gpt-ad-1449240174198-2′); });
Ua hōʻike ʻia ka synthesis o nā membrane nanocomposite he ala maikaʻi loa no ka hoʻohui ʻana i nā pono o ka polymeric a me nā nanomaterials anorganic. Hiki ke hoʻomaikaʻi ʻia nā hiʻohiʻona kūlohelohe o nā membrane reverse osmosis ma ka hoʻoponopono maikaʻi ʻana i ka haku mele a me ke ʻano. No ka laʻana, ua hoʻopuehu ʻia ka hydrotalcite (HT) i loko o kahi wai wai a hoʻokomo ʻia i loko o ka matrix PA ma ke kahua o ka polymerization interfacial e hana i nā ala lawe wai.
ʻO ka hopena o nā membrane e hōʻike ana i ke koho permeability kiʻekiʻe a me ka hoʻonui ʻana i ka kahe wai me ka ʻole o ka ʻai ʻana i ka paʻakai. Eia kekahi, ua hōʻike ʻia ka hoʻololi ʻana o ka membrane, me ka hoʻohui ʻana i ka nanoparticle, ka uhi ʻana o ka ʻili, a me ka grafting, he ala kūpono e pale ai i ka biofouling. Ma waena o lākou, ʻo ka hoʻopili ʻana i nā mea anti-fouling i nā nanoparticles i hoʻokomo ʻia i ka matrix PA he hoʻolālā maikaʻi loa e hāʻawi i nā waiwai anti-fouling e hoʻohuli i nā membrane osmosis me ka ʻole e hōʻino i ka matrix PA.
He waiwai nā nanoparticles HT i nā pūʻulu hydroxyl, hiki ke hana me nā pūʻulu siloxy o nā mea hoʻohui silane e hoʻokō ai i ka grafting antifouling. No laila, hiki ke kiʻi ʻia kahi moʻolelo TFC reverse osmosis membrane me ke koho kiʻekiʻe a me nā waiwai anti-fouling ma o ka hoʻohana ʻana i nā nanoparticles HT ma ke ʻano he dopants ma ka papa PA a me ka hoʻopili ʻana i nā hui hana anti-fouling me nā mea hoʻohui silane ma ka ʻili o ka membrane.
ʻO Prof. Wang Jian mai ka Institute of Desalination and Integrated Seawater Utilization, Prof. Ma Zhong mai Shandong University of Science and Technology, Dr. Tian Xinxia mai ka Chinese Academy of Sciences, i hoʻouluʻia e nāʻano o HT nanoparticles a me silane coupling agents i loaʻa ka quaternary nā paʻakai ammonium. , a hui pū nā lālā o kā lākou hui. Ua hoʻoikaika ʻia e hoʻomohala i kahi ʻano hou o ka membrane reverse osmosis me ka hana kiʻekiʻe paʻa paʻa lōʻihi ma ka hoʻomaikaʻi ʻana i ka koho permeability mua a me ka anti-fouling.
ʻO kā lākou hana i hoʻomaikaʻi nui i ka hana o TFC PA reverse osmosis membranes a hāʻawi i nā ʻōlelo aʻoaʻo ʻenehana waiwai no ka wā e hiki mai ana o ka desalination wai kai. Ua paʻi ʻia ke aʻo ʻana ma ka puke pai Frontiers of Environmental Science & Engineering.
I loko o kēia haʻawina, ua hoʻokomo ʻia nā nanoparticles Mg-Al-CO3 HT i loko o kahi papa PA ma o ka hoʻopuehu ʻana i loko o kahi hopena organik i ka wā o ka polymerization interfacial. ʻO ka hoʻokomo ʻana o HT he ʻelua hana, hoʻonui i ka kahe wai a lawelawe ma ke ʻano he grafting site. ʻO ka hoʻokomo ʻana o HT i hoʻonui i ka kahe wai me ka ʻole o ka mōhai ʻana i ka paʻakai paʻakai, e uku ana i nā poho i hana ʻia e ka hopena grafting ma hope. ʻO ka ʻili i hōʻike ʻia o ka HT he kahua grafting no ka antifouling agent dimethyloctadecyl[3-(trimethoxysilyl)propyl]ammonium chloride (DMOT-PAC).
ʻO ka hui pū ʻana o ka HT incorporation a me DMOTPAC grafting endows reverse osmosis membranes me ke kiʻekiʻe permeability selectivity a me nā waiwai anti-fouling. ʻO ka kahe wai o PA-NT-0.06 he 49.8 l / m2·h, ʻo ia ka 16.4% kiʻekiʻe ma mua o ka membrane mua. ʻO ke kiʻekiʻe o ka hōʻole ʻana i ka paʻakai PA-HT-0.06 he 99.1%, kahi i hoʻohālikelike ʻia me ka membrane mua. E pili ana i ka hoʻohaumia ʻana i ka lysozyme, ʻoi aku ka kiʻekiʻe o ka hoʻihoʻi ʻana i ka wai o ka membrane i hoʻololi ʻia ma mua o ka membrane mua (e laʻa, 86.8% no PA-HT-0.06 versus 78.2% no PA-original). ʻO ke kiʻekiʻe o ka hana bactericidal o PA-HT-0.06 e kūʻē iā Escherichia coli a me Bacillus subtilis he 97.3% a me 98.7%.
ʻO kēia haʻawina ka mea mua i hōʻike i ka hoʻokumu ʻana o nā mea paʻa covalent ma waena o DMOTPAC a me HT nanoparticles i hoʻokomo ʻia i loko o nā matrices PA e hana i nā membrane reverse osmosis me ke kiʻekiʻe permeability selectivity a me nā waiwai anti-fouling. ʻO ka hoʻohui ʻia ʻana o nā nanoparticles i hoʻohui ʻia a me ka hui pū ʻana i hiki ke hoʻomohala i nā membrane reverse osmosis me ka koho permeability kiʻekiʻe a me nā waiwai anti-fouling.
ʻIke hou aku: Xinxia Tian et al., Ka hoʻomākaukau ʻana i kahi membrane reverse osmosis me ke koho kiʻekiʻe a me nā waiwai anti-fouling no ka desalination wai kai, Frontiers in Environmental Science and Engineering (2021). DOI: 10.1007/s11783-021-1497-0
Inā loaʻa iā ʻoe kahi typo, pololei ʻole, a makemake ʻoe e hoʻouna i kahi noi e hoʻoponopono i ka ʻike o kēia ʻaoʻao, e ʻoluʻolu e hoʻohana i kēia palapala. No nā nīnau maʻamau, e ʻoluʻolu e hoʻohana i kā mākou palapala hoʻopili. No nā manaʻo manaʻo nui, e ʻoluʻolu e hoʻohana i ka ʻāpana manaʻo lehulehu ma lalo nei (ʻoluʻolu nā manaʻo).
He mea nui loa kāu manaʻo iā mākou. Eia naʻe, ma muli o ka nui o nā memo, ʻaʻole hiki iā mākou ke hōʻoiaʻiʻo i nā pane pākahi.
Hoʻohana wale ʻia kāu leka uila e hōʻike i ka poʻe loaʻa i ka mea nāna i hoʻouna i ka leka uila. ʻAʻole hoʻohana ʻia kāu helu wahi a i ʻole ka helu o ka mea i loaʻa no kekahi kumu ʻē aʻe. E ʻike ʻia ka ʻike āu i hoʻokomo ai ma kāu leka uila a ʻaʻole e mālama ʻia e Phys.org ma kekahi ʻano.
E kiʻi i nā mea hou i kēlā me kēia pule a/a i kēlā me kēia lā ma kāu pahu pahu. Hiki iā ʻoe ke wehe i ka inoa i kēlā me kēia manawa a ʻaʻole mākou e kaʻana like i kāu ʻikepili me nā ʻaoʻao ʻekolu.
Ke hoʻohana nei kēia pūnaewele i nā kuki e maʻalahi i ka hoʻokele ʻana, e nānā i kāu hoʻohana ʻana i kā mākou lawelawe, e hōʻiliʻili i ka ʻikepili no ka hoʻolaha pilikino, a hāʻawi i nā ʻike mai nā ʻaoʻao ʻekolu. Ma ka hoʻohana ʻana i kā mākou pūnaewele, ʻae ʻoe ua heluhelu a hoʻomaopopo ʻoe i kā mākou Kulekele pilikino a me nā ʻōlelo hoʻohana.


Ka manawa hoʻouna: Jan-04-2023