Rov qab osmosis (RO) thev naus laus zis tau nyiam ntau qhov kev mloog vim nws siv dav rau kev sib tsoo thiab dej hiav txwv desalination. Nyias zaj duab xis composite (TFC) polyamide (PA) thim rov qab osmosis daim nyias nyias, muaj cov txheej txheem sib cais ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom polyamide (PA) thim rov qab osmosis membranes Txawm li cas los xij, qhov tsawg permeability ntawm PA RO daim nyias nyias thiab fouling ntawm TFC thim rov qab osmosis daim nyias nyias txwv qhov dav siv ntawm PA RO TFC daim nyias nyias. googletag.cmd.push(function() { googletag.display('div-gpt-ad-1449240174198-2′); });
Lub synthesis ntawm nanocomposite daim nyias nyias tau ua pov thawj los ua ib txoj hauv kev zoo rau kev sib txuas qhov zoo ntawm cov khoom siv polymeric thiab inorganic nanomaterials. Lub ntuj yam ntxwv ntawm thim rov qab osmosis daim nyias nyias tuaj yeem txhim kho los ntawm kev kho kom zoo ntawm qhov muaj pes tsawg leeg thiab cov qauv. Piv txwv li, hydrotalcite (HT) tau tawg mus rau hauv cov tshuaj aqueous thiab suav nrog PA matrix ntawm theem ntawm interfacial polymerization los tsim cov kev thauj dej.
Cov kua nplaum uas ua rau muaj kev xaiv zoo permeability thiab nce dej ntws yam tsis muaj ntsev ntsev. Tsis tas li ntawd, kev hloov kho daim nyias nyias, suav nrog kev koom ua ke ntawm nanoparticle, txheej txheej, thiab grafting, tau pom tias yog ib txoj hauv kev zoo los tiv thaiv biofouling. Ntawm lawv, grafting anti-fouling agents mus rau nanoparticles embedded nyob rau hauv lub PA matrix yog ib tug zoo heev lub tswv yim rau impart anti-fouling zog rau thim rov qab osmosis daim nyias nyias yam tsis ua puas PA matrix.
HT nanoparticles yog nplua nuj nyob rau hauv hydroxyl pawg, uas tuaj yeem hnov mob nrog siloxy pawg ntawm silane coupling agents kom ua tiav antifouling grafting. Yog li ntawd, ib qho tshiab TFC rov qab osmosis daim nyias nyias uas muaj kev xaiv siab thiab cov khoom tiv thaiv fouling tuaj yeem tau txais los ntawm kev siv HT nanoparticles ua dopants hauv PA txheej thiab grafting anti-fouling functional pawg-muaj silane coupling agents mus rau daim nyias nyias.
Prof. Wang Jian los ntawm lub koom haum ntawm Desalination thiab Integrated Seawater Utilization, Prof. Ma Zhong los ntawm Shandong University of Science thiab Technology, Dr. Tian Xinxia los ntawm Suav Academy ntawm Sciences, tshwm sim los ntawm cov yam ntxwv ntawm HT nanoparticles thiab silane coupling agents uas muaj quaternary ammonium ntsev. , thiab cov tswv cuab ntawm lawv pab neeg ua ke. Kev siv zog tau tsim los tsim ib hom tshiab ntawm thim rov qab osmosis membrane nrog lub sijhawm ntev ruaj khov ua haujlwm siab los ntawm ib txhij txhim kho cov thawj permeability selectivity thiab anti-fouling.
Lawv txoj haujlwm tau txhim kho qhov ua tau zoo ntawm TFC PA rov qab osmosis daim nyias nyias thiab muab cov lus qhia muaj txiaj ntsig zoo rau yav tom ntej ntawm seawater desalination. Txoj kev tshawb no tau luam tawm nyob rau hauv phau ntawv Journal Frontiers of Environmental Science & Engineering.
Nyob rau hauv txoj kev tshawb no, Mg-Al-CO3 HT nanoparticles tau muab tso rau hauv ib txheej PA los ntawm dispersion nyob rau hauv cov organic tov thaum interfacial polymerization. Kev suav nrog HT ua si ob lub luag haujlwm, txhim kho cov dej ntws thiab ua haujlwm raws li qhov chaw grafting. Kev suav nrog HT nce cov dej ntws yam tsis muaj kev cuam tshuam cov ntsev tsis lees paub, them nyiaj rau qhov poob los ntawm cov tshuaj tiv thaiv tom qab grafting. Qhov chaw nthuav tawm ntawm HT ua haujlwm ua qhov chaw grafting rau cov tshuaj tua kab mob dimethyloctadecyl[3-(trimethoxysilyl)propyl]ammonium chloride (DMOT-PAC).
Kev sib xyaw ua ke ntawm HT incorporation thiab DMOTPAC grafting endows thim rov qab osmosis membranes nrog siab permeability selectivity thiab anti-fouling zog. Cov dej ntws ntawm PA-NT-0.06 yog 49.8 l / m2·h, uas yog 16.4% siab dua li ntawm daim nyias nyias. Qib ntawm kev tsis lees paub ntawm PA-HT-0.06 ntsev yog 99.1%, uas yog piv rau qhov qub membrane. Nrog rau qhov tsis zoo them nyiaj lysozyme paug, cov dej ntws rov qab los ntawm cov ntaub ntawv hloov pauv tau siab dua li ntawm cov ntaub ntawv qub (piv txwv li, 86.8% rau PA-HT-0.06 piv rau 78.2% rau PA-original). Qib ntawm cov kab mob bactericidal ntawm PA-HT-0.06 tiv thaiv Escherichia coli thiab Bacillus subtilis yog 97.3% thiab 98.7%, feem.
Txoj kev tshawb no yog thawj zaug qhia txog kev tsim cov ntawv cog lus ntawm DMOTPAC thiab HT nanoparticles embedded hauv PA matrices los tsim cov rov qab osmosis membranes nrog siab permeability selectivity thiab anti-fouling zog. Kev koom ua ke ntawm kev sib xyaw nanoparticles thiab kev ua haujlwm pab pawg grafting pab txoj kev txhim kho ntawm rov qab osmosis daim nyias nyias nrog siab permeability selectivity thiab anti-fouling zog.
Cov ntaub ntawv ntxiv: Xinxia Tian li al., Kev Npaj ntawm qhov rov qab osmosis membrane nrog kev xaiv siab thiab tiv thaiv fouling zog rau seawater desalination, Frontiers hauv Environmental Science thiab Engineering (2021). PIB: 10.1007/s11783-021-1497-0
Yog tias koj ntsib qhov typo, tsis raug, lossis xav xa daim ntawv thov los hloov cov ntsiab lus ntawm nplooj ntawv no, thov siv daim foos no. Rau cov lus nug dav dav, thov siv peb daim foos tiv tauj. Rau kev tawm tswv yim dav dav, thov siv cov lus qhia pej xeem hauv qab no (cov lus pom zoo thov).
Koj cov lus teb tseem ceeb heev rau peb. Txawm li cas los xij, vim qhov ntim ntawm cov lus, peb tsis tuaj yeem lav cov lus teb rau tus kheej.
Koj tus email chaw nyob tsuas yog siv los qhia rau cov neeg tau txais kev paub tias leej twg xa email. Tsis yog koj qhov chaw nyob lossis tus neeg txais qhov chaw nyob yuav tsis raug siv rau lwm lub hom phiaj. Cov ntaub ntawv koj tau nkag mus yuav tshwm sim hauv koj tus email thiab yuav tsis muab khaws cia los ntawm Phys.org hauv ib daim ntawv.
Tau txais cov hloov tshiab txhua lub lim tiam thiab / lossis txhua hnub hauv koj lub inbox. Koj tuaj yeem tso npe tau txhua lub sijhawm thiab peb yuav tsis qhia koj cov ntaub ntawv rau peb tog.
Lub vev xaib no siv cov ncuav qab zib los pab txhawb kev taug kev, txheeb xyuas koj qhov kev siv peb cov kev pabcuam, sau cov ntaub ntawv los ua tus kheej tshaj tawm, thiab muab cov ntsiab lus los ntawm peb tog. Los ntawm kev siv peb lub vev xaib, koj lees paub tias koj tau nyeem thiab nkag siab peb Txoj Cai Tswjfwm Ntiag Tug thiab Cov Cai Siv.
Post lub sij hawm: Jan-04-2023