Ikoranabuhanga rishya ryo kunoza guhitamo kwinshi no kurwanya kwanduza membrane osmose membrane.

Ikoranabuhanga rya osmose (RO) ryashimishije abantu benshi kubera ko rikoreshwa cyane mu kuvoma amazi meza. Filime ntoya (TFC) polyamide (PA) ihindura osmose membrane, igizwe nigice cyo gutandukanya cyinshi hamwe nigice kinini cyo gushyigikira, byabaye ibicuruzwa byambere muriki gice. Nyamara, ubushobozi buke bwa PA RO hamwe no kwanduza TFC revers osmose membrane bigabanya ikoreshwa ryinshi rya PA RO TFC. googletag.cmd.push (imikorere () {googletag.ikinamico ('div-gpt-ad-1449240174198-2 ′);});
Synthesis ya nanocomposite membrane yerekanye ko ari uburyo bwiza bwo guhuza ibyiza bya nanomateriali ya polymeric na organic organique. Ibiranga kamere biranga osmose membrane irashobora kunozwa muguhuza neza imiterere nimiterere. Kurugero, hydrotalcite (HT) yatatanijwe mugisubizo cyamazi kandi ishyirwa muri matrike ya PA murwego rwo guhuza polymerisime hagati kugirango habeho imiyoboro yo gutwara amazi.
Ibivamo bivamo kwerekana uburyo bwo guhitamo neza no kongera amazi atarinze kwigomeka umunyu. Byongeye kandi, guhindura membrane, harimo kwinjiza nanoparticle, gutwikira hejuru, hamwe no gushushanya, byagaragaye ko ari uburyo bwiza bwo gukumira ibinyabuzima. Muri byo, gushushanya imiti igabanya ubukana kuri nanoparticles yashyizwe muri matrike ya PA ni ingamba nziza yo gutanga imitungo irwanya ububi kugirango ihindure osmose itabangamiye matrike ya PA.
HT nanoparticles ikungahaye kumatsinda ya hydroxyl, ishobora kwitwara hamwe na siloxy ya matsinda ya silane ihuza ibikoresho kugirango igere kuri antifouling. Kubwibyo, igitabo gishya cya TFC gihindura osmose membrane hamwe no guhitamo byinshi hamwe no kurwanya anti-fouling urashobora kuboneka ukoresheje HT nanoparticles nka dopants murwego rwa PA hanyuma ugashushanya anti-fouling imikorere ikora irimo silane ihuza ibintu hejuru ya membrane.
Prof. Wang Jian wo mu kigo cy’ubutayu no gukoresha amazi yo mu nyanja, Prof. Ma Zhong wo muri kaminuza y’ubumenyi n’ikoranabuhanga ya Shandong, Dr. Tian Xinxia wo mu Ishuri Rikuru ry’Ubumenyi ry’Ubushinwa, yatewe inkunga n’ibiranga HT nanoparticles hamwe n’ibikoresho bya silane birimo ibice bine. umunyu wa amonium. , hamwe n'abagize itsinda ryabo hamwe. Hashyizweho ingufu kugirango habeho ubwoko bushya bwa rezo osmose membrane hamwe nigihe kirekire gihamye cyo gukora murwego rwo hejuru icyarimwe kunoza uburyo bwambere bwo guhitamo no kurwanya ikosa.
Ibikorwa byabo byateje imbere cyane imikorere ya TFC PA revers osmose membrane kandi itanga inama zubuhanga zigihe kizaza cyo guta amazi yinyanja. Ubushakashatsi bwasohotse mu kinyamakuru Frontiers of Environmental Science & Engineering.
Muri ubu bushakashatsi, Mg-Al-CO3 HT nanoparticles yashyizwe mubice bya PA ikwirakwizwa mugisubizo kama mugihe cya polymerisiyasi. Kwinjizamo HT bigira uruhare runini, kuzamura amazi no gukora nk'ahantu hateganijwe. Kwinjizamo HT byongereye amazi atitanze ngo yange umunyu, yishyure igihombo cyatewe nigisubizo cyakurikiyeho. Ubuso bugaragara bwa HT bukora nk'urubuga rwo gushushanya antifouling agent dimethyloctadecyl [3- (trimethoxysilyl) propyl] ammonium chloride (DMOT-PAC).
Gukomatanya kwinjizamo HT hamwe na DMOTPAC gushushanya bihindura osmose membrane ihindagurika hamwe no guhitamo kwinshi kandi birwanya kurwanya. Amazi ya PA-NT-0.06 yari 49.8 l / m2 · h, akaba arenga 16.4% ugereranije n’ayambere. Urwego rwo kwangwa umunyu PA-HT-0.06 wari 99.1%, ugereranije nuwa mbere. Kubijyanye no kwanduza lysozyme nabi, kugarura amazi yo mumazi yahinduwe byari hejuru kurenza iyambere (urugero, 86.8% kuri PA-HT-0.06 na 78.2% kuri PA-umwimerere). Urwego rwibikorwa bya bagiteri yica PA-HT-0.06 kurwanya Escherichia coli na Bacillus subtilis yari 97.3% na 98.7%.
Ubu bushakashatsi nubwa mbere bwatangaje ko hashyizweho imiyoboro ya covalent hagati ya DMOTPAC na HT nanoparticles yashyizwe muri matrices ya PA kugirango itange imiterere ya osmose ihindagurika kandi ihitamo neza kandi irwanya ububi. Kwinjizamo nanoparticles ihuriweho hamwe no gukora amatsinda yibikorwa bifasha iterambere ryimyanya ndangagitsina ya osmose hamwe no guhitamo kwinshi kwinshi hamwe no kurwanya ibintu bibi.
Andi makuru: Xinxia Tian et al., Gutegura icyerekezo cya osmose ihindagurika hamwe no guhitamo byinshi hamwe no kurwanya ibicuruzwa biva mu nyanja, Imipaka mu bumenyi bw’ibidukikije n’ubuhanga (2021). DOI: 10.1007 / s11783-021-1497-0
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