Reverse osmosis (RO) tekinoroji yakwezva kutarisisa kwakawanda nekuda kwekushanda kwayo kwakakura kwebrackish uye yegungwa desalination. Thin film composite (TFC) polyamide (PA) reverse osmosis membranes, ine dense kupatsanurwa layer uye porous tsigiro layer, anga ari iwo anotungamira zvigadzirwa mumunda uyu. Nekudaro, iyo yakaderera permeability yePA RO membranes uye kusvibiswa kweTFC reverse osmosis membranes inodzikamisa kushandiswa kwakapararira kwePA RO TFC membranes. googletag.cmd.push(basa() {googletag.display('div-gpt-ad-1449240174198-2′);});
Iyo synthesis ye nanocomposite membranes yaratidza kuve yakanakisa nzira yekubatanidza zvakanakira zvepolymeric uye inorganic nanomaterials. Iwo echisikigo maitiro e reverse osmosis membranes anogona kuvandudzwa nekugadzirisa zvakanaka kuumbwa uye chimiro. Semuyenzaniso, hydrotalcite (HT) yakaparadzirwa mune aqueous solution uye yakabatanidzwa muPA matrix padanho reinterfacial polymerization kugadzira nzira dzekufambisa dzemvura.
Iyo inoguma membranes inoratidza yakakwirira permeability selectivity uye kuwedzera kwemvura kuyerera pasina kupira munyu repellency. Uye zvakare, kugadziridzwa kwemembrane, kusanganisira nanoparticle incorporation, kupeta kwepamusoro, uye kubatanidza, kwakaratidzwa senzira inoshanda yekudzivirira biofouling. Pakati pavo, kubatanidza anti-fouling agents pane nanoparticles akaiswa muPA matrix inzira yakanaka yekupa anti-fouling zvivakwa kudzosera osmosis membranes pasina kukuvadza iyo PA matrix.
Iwo HT nanoparticles akapfuma mumapoka ehydroxyl, anogona kuita nemapoka e-siloxy e silane coupling agents kuti awane antifouling grafting. Naizvozvo, novel TFC reverse osmosis membrane ine high selectivity uye anti-fouling zvimiro inogona kuwanikwa nekushandisa HT nanoparticles se dopants muPA layer uye kubatanidza anti-fouling inoshanda boka-ine silane coupling agents pane membrane pamusoro.
Prof. Wang Jian vanobva kuInstitute of Desalination and Integrated Seawater Utilization, Prof. Ma Zhong vekuShandong University of Science and Technology, Dr. Tian Xinxia vanobva kuChinese Academy of Sciences, vachifemerwa nehunhu hweHT nanoparticles uye silane coupling agents zvine quaternary. ammonium munyu. , uye nhengo dzechikwata chavo pamwe chete. Nhamburiko dzakaitwa kuvandudza rudzi rutsva rwe reverse osmosis membrane ine nguva yakareba yakagadzikana yakakwira kuita nekuvandudza panguva imwe chete yepakutanga permeability selectivity uye anti-fouling.
Basa ravo rakavandudza zvakanyanya mashandiro eTFC PA reverse osmosis membranes uye rakapa zano rakakosha rehunyanzvi remangwana rekubvisa mvura yegungwa. Chidzidzo ichi chakaburitswa mupepanhau Frontiers of Environmental Science & Engineering.
Muchidzidzo ichi, Mg-Al-CO3 HT nanoparticles akaverengerwa muPA layer nekupararira mune organic solution panguva yekubatana kwepolymerization. Iko kuiswa kweHT kunoita basa rehuviri, kuwedzera kuyerera kwemvura uye kushanda senzvimbo yekubatanidza. Kuiswa kweHT kwakawedzera kuyerera kwemvura pasina kupira kurambwa kwemunyu, kuripa kurasikirwa kunokonzerwa neanotevera grafting reaction. Nzvimbo yakafumurwa yeHT inoshanda senzvimbo yekubatanidza yeantifouling agent dimethyloctadecyl[3-(trimethoxysilyl)propyl]ammonium chloride (DMOT-PAC).
Iko kusanganiswa kweHT kubatanidzwa uye DMOTPAC yekubatanidza endows reverse osmosis membranes ine yakakwirira permeability selectivity uye anti-fouling zvivakwa. Mvura inoyerera yePA-NT-0.06 yaiva 49.8 l / m2 · h, iyo 16.4% yakakwirira kudarika iyo yepakutanga membrane. Dhigirii yekurambwa kwePA-HT-0.06 munyu yaive 99.1%, iyo inofananidzwa neyekutanga membrane. Nekuremekedza kusvibiswa kwelysozyme yakasvibiswa, mvura yakasvibiswa yekudzorera membrane yakashandurwa yakanga yakakwirira kudarika yepakutanga membrane (semuenzaniso, 86.8% yePA-HT-0.06 maringe ne78.2% yePA-yepakutanga). Dhigirii rekuita kwebhakitiriya kwePA-HT-0.06 paEscherichia coli neBacillus subtilis yaive 97.3% ne98.7%, zvichiteerana.
Chidzidzo ichi ndicho chekutanga kuzivisa kuumbwa kwezvisungo zvecovalent pakati peDMOTPAC neHT nanoparticles akaiswa muPA matrices kuti abudise reverse osmosis membranes ane yakakwira permeability selectivity uye anti-fouling zvimiro. Iko kubatanidzwa kweakasanganiswa nanoparticles uye inoshanda boka grafting inogonesa kusimudzira reverse osmosis membranes ine yakakwirira permeability selectivity uye anti-fouling zvimiro.
Rumwe ruzivo: Xinxia Tian et al., Kugadzirira kwereverse osmosis membrane ine yakakwira selectivity uye anti-kusvibisa zvimiro zvekubvisa mvura yegungwa, Frontiers muEvironment Sayenzi uye Injiniya (2021). DOI: 10.1007/s11783-021-1497-0
Kana ukasangana netaipa, zvisizvo, kana kuti uchida kutumira chikumbiro chekugadzirisa zviri papeji ino, ndapota shandisa fomu iri. Pamibvunzo yakajairika, ndapota shandisa fomu redu rekuonana. Kuti uwane mhinduro, ndapota shandisa chikamu cheruzhinji pazasi (kurudziro ndapota).
Mhinduro yako yakakosha kwatiri. Nekudaro, nekuda kwehuwandu hwemeseji, hatigone kuvimbisa mhinduro dzemunhu mumwe nemumwe.
Yako email kero inongoshandiswa kuita kuti vanogamuchira vazive ndiani atumira email. Kero yako kana kero yemugamuchiri haizoshandiswe kune chimwe chinangwa. Ruzivo rwawakaisa ruchaonekwa mune yako email uye haruchengetwe nePhys.org chero ipi nzira.
Tora vhiki nevhiki uye/kana zvemazuva ese mubhokisi rako rekunyora. Iwe unogona kuzvibvisa chero nguva uye isu hatife takagovana data rako nevechitatu mapato.
Iyi webhusaiti inoshandisa makuki kufambisa kufamba, kuongorora mashandisiro aunoita masevhisi edu, kuunganidza data kugadzira ads, uye kupa zvirimo kubva kune vechitatu mapato. Nekushandisa webhusaiti yedu, unobvuma kuti wakaverenga uye nekunzwisisa yedu Yakavanzika Policy uye Mitemo Yekushandisa.
Nguva yekutumira: Jan-04-2023