Kev siv lub hnub ci los ua kom cov dej tsis muaj dej ntau (SIE) yog ib qho ntawm cov thev naus laus zis zoo tshaj plaws los pab txo qhov tsis txaus dej tshiab vim nws muaj peev xwm siv lub zog hnub ci los tsim dej tshiab tau zoo. Tsis tas li ntawd xwb, cov tshuab cua sov hnub ci muaj cov txiaj ntsig tshwj xeeb hauv kev kho cov dej ntsev uas muaj cov ntsev ntau . Cov txheej txheem ua kom cov dej ntsev tsuas yog tsim cov ntsev ua cov khoom seem xwb, yog li ua tiav xoom cov kua dej tawm. Txawm li cas los xij, kev sib sau ua ke ntawm cov ntsev hauv lub tshuab cua sov yuav cuam tshuam kev nqus ntawm lub teeb thiab cuam tshuam rau kev tawm ntawm cov pa dej, thaum kawg ua rau kev ua haujlwm ntawm lub tshuab cua sov txo qis lossis txawm tias ua tsis tiav.
Txhawm rau daws qhov teeb meem no, qee cov kws tshawb fawb tau tawm tswv yim "kev siv ntsev" lub tswv yim. Ntawd yog, txoj kev ncig yog tsim los rau kev daws teeb meem kom cov ntsev ions ntws rov qab rau hauv brine, yog li tiv thaiv ntsev los ntawm crystallizing ntawm qhov chaw evaporation, yog li ua tiav cov evaporation tas li thiab ruaj khov. Txawm li cas los xij, txoj kev no yuav ua rau salinity ntawm cov tshuaj nce ntxiv, thiab qhov teeb meem ntawm ntsev crystallization tseem tsis tuaj yeem zam.
Lwm qhov kev daws teeb meem yog "salting out" tswv yim. Ntawd yog, cov qauv raug tswj xyuas kom cov ntsev yog qhov zoo tshaj plaws crystallized nyob rau hauv qhov chaw uas tsis yog-evaporation, yog li txo qhov cuam tshuam ntawm ntsev crystallization ntawm evaporation kev ua tau zoo, yog li ua tiav cov kev sib sau ua ke ntawm ntsev thiab dej tshiab. Txawm li cas los xij, lub tswv yim "salting out" tseem ntsib qee qhov teeb meem loj hauv kev siv tswv yim.
Ua ntej, ib-dimensional brine thauj txwv tsis pub muaj peev xwm nqus tau, txo qhov evaporation tag nrho. Qhov thib ob, lub tswv yim ntsev crystallization yuav tsum tsis tu ncua tshem tawm cov ntsev muaju, uas nyuaj rau poob tawm ntawm cov evaporator nto vim lawv cov adhesion muaj zog. Yog hais tias cov ntsev deposited tsis tau muab tshem tawm nyob rau hauv lub sij hawm, lub evaporation kev ua tau zoo yuav inevitably raug txo. Tsis tas li ntawd, ntau lub hnub ci evaporators uas muaj txiaj ntsig zoo yuav tsum tau npaj cov txheej txheem txaus ntshai lossis siv sijhawm, xws li kev kub siab, lub tshuab nqus tsev qis, lossis kev kho cua sov.
Yog li ntawd, kev tsim lub hnub ci evaporator ruaj khov kom ua tiav lub sijhawm ntev, ua haujlwm tau zoo, thiab ruaj khov dej evaporation thiab ntsev sau los ntawm cov txheej txheem yooj yim npaj rau xoom kua paug desalination yog lub hom phiaj kev tshawb fawb tsis tiav.
Raws li cov kev sib tw saum toj no, pab pawg tshawb fawb ntawm Shandong First Medical University tau npaj peb-seem gradient graphene spiral airgel evaporator, uas tuaj yeem ua tiav cov hnub ci evaporation ntawm cov dej ntsev ntsev thiab ua kom tsis muaj kua paug.
Txhawm rau ua kom tau raws li cov kev xav tau nruj ntawm lub hnub ci evaporators nyob rau hauv cov nqe lus ntawm kev siv lub hnub ci kom zoo, kev siv lub zog tag nrho, kev ua kom ntsev zoo thiab kev ruaj ntseg mus sij hawm ntev, qhov project tsim feem ntau tsom rau plaub lub ntsiab lus hauv qab no:
Tsom ntsoov rau kev tsim qauv thiab tshuaj lom neeg ruaj khov txhim kho
Lub evaporator yuav tsum muaj cov qauv network muaj zog thiab kev ruaj khov ntawm cov tshuaj lom neeg, uas yog qhov tseem ceeb rau kev ua kom lub hnub ci desalination mus sij hawm ntev, ua haujlwm tau zoo thiab ruaj khov. Yog li ntawd, lawv tau xaiv cov ua npuas ncauj melamine pheej yig, super-hydrophilic, siab porosity thiab siab resilience ua lub cev txhawb nqa ntawm lub hnub ci evaporator.
Tom qab ntawd lawv tau kawm cov cuab yeej cuab tam ntawm graphene aerogels nrog melamine ua npuas ncauj raws li lub cev pob txha nyob rau hauv ntau hom, nrog rau compression, dabtsi yog khoov, thiab nro, txhawm rau txheeb xyuas lawv cov khoom siv kho tshuab.
Txhawm rau txhawm rau txheeb xyuas nws qhov muaj zog thiab ua haujlwm ntev raws li cov ntawv thov tiag tiag, pab pawg tshawb fawb tau ua cov kev sim hauv ntau yam xwm txheej.
Tshwj xeeb, lawv tau khoov cov qauv 20 zaug hauv huab cua thiab dej, muab nws tsau rau hauv cov kua qaub thiab alkaline , thiab muab tso rau hauv qhov chaw nyuaj xws li kub thiab ultrasonic stirring.
Tom qab cov kev sim nruj no, lawv pom tsis muaj kev hloov pauv tseem ceeb hauv cov qauv zoo li qub thiab microstructure, uas pom tau tias nws zoo heev durability thiab kev ruaj ntseg.
Tsom ntsoov rau kev yooj yim thiab kev txhim kho kev lag luam ntawm cov txheej txheem tsim khoom
Txhawm rau ua kom yooj yim thiab kev lag luam hauv cov txheej txheem tsim khoom evaporator thiab zam kev siv cov cuab yeej kim, lawv tsim cov kauj ruam hauv qab no:
Thawj kauj ruam yog kub nias
Siv cov cuab yeej siv hluav taws xob kub, pab pawg tshawb fawb tau compressed melamine foams ntawm txawv thicknesses kom tau ib tug pre-pressed melamine zaj duab xis nrog ib tug tuab ntawm 1 hli.
Thaum lub sijhawm ua cov txheej txheem no, raws li qhov sib piv ntawm cov tuab qub ntawm cov qauv mus rau qhov tuab kawg uas tau nias nce ntxiv, qhov loj ntawm cov zaj duab xis melamine uas tau nias ua ntej raug tswj hwm zoo los ntawm 150 μ m txog 20 μ m , tsim cov qauv sib txuas lus peb-seem gradient tshwj xeeb.
Qhov thib ob kauj ruam yog nto txau
Siv lub raj mis tsuag los tsuag cov graphene oxide suspension kom sib npaug rau ntawm qhov chaw ntawm cov yeeb yaj kiab melamine uas tau nias ua ntej . Kev faib tawm ntawm graphene oxide hauv cov yeeb yaj kiab tau ua tiav, uas tau tso lub hauv paus rau kev txo qis hnub ci tom qab.
Qhov thib peb kauj ruam yog atmospheric siab kom qhuav
Tom qab txau, lawv tso cov yeeb yaj kiab ncaj qha rau hauv huab cua kom qhuav huab cua. Cov kauj ruam no zam cov txheej txheem kev ua haujlwm nyuaj, siv sijhawm thiab siv lub zog xws li khov kom qhuav, supercritical drying thiab hnyav hloov.
Kauj ruam plaub yog txo lub hnub ci
Ntawd yog, siv lub iav tsom iav kom pom lub hnub ci ntawm tus qauv. Nyob rau hauv qhov kev txiav txim ntawm ultraviolet rays, cov xim ntawm cov qauv nto sai hloov ntawm xim av mus rau dub, qhia tau hais tias cov graphene oxide tau ntse txo kom txo tau graphene oxide.
Txoj kev txo hnub ci no tsis yog tsuas yog yooj yim rau kev khiav lag luam thiab ib puag ncig tus phooj ywg, tab sis kuj tsis tas yuav siv cov tshuaj txo cov neeg ua haujlwm lossis cov txheej txheem thermal txo qis, txo cov nqi tsim khoom thiab kev ua qias tuaj ib puag ncig.
Tsom ntsoov rau kev siv hluav taws xob zoo hnub ci thiab txo qis zog poob
Lub hnub ci evaporators yuav tsum tsis tsuas yog nqus thiab hloov ntau lub hnub ci zog rau hauv thermal zog, tab sis kuj txo qis lub zog poob los ntawm diffuse reflection thiab thermal tawg, thiab khaws lub zog ntxiv los ntawm ib puag ncig. Cov txheej txheem evaporation ntawm lub hnub ci interface yog tswj los ntawm peb lub zog fluxes: hnub ci zog tawm tswv yim, evaporation zog tso zis, thiab lub zog dissipated rau ib puag ncig.
Hmoov tsis zoo, cov pa roj carbon monoxide ob-dimensional solar evaporators ntsib teeb meem ntawm lub zog dissipation vim kev sib pauv cua sov nrog rau ib puag ncig ib puag ncig, ua rau nws nyuaj rau kev ua tiav qhov zoo tshaj 100% hnub ci-rau-kub conversion efficiency. Nyob rau hauv sib piv, peb-dimensional hnub ci evaporators yuav ua txhaum lub theoretical txwv ntawm solar-rau-steam conversion efficiency.
Txhawm rau txo qhov poob ntawm lub zog los ntawm diffuse reflection thiab thermal tawg nyob rau saum npoo ntawm cov qauv peb-seem, pab pawg tsim ib qho peb-dimensional kauv concave graphene aerogel.
Cov qauv no tsis tsuas yog muaj qhov nqus tau siab dua thiab qis dua qhov xav tau, tab sis nws cov phab ntsa sab nraud kuj tseem tuaj yeem nqus cov cua sov thiab cov cua sov diffusely los ntawm hauv qab, yog li ua kom muaj zog rov qab zoo.
Tsom ntsoov rau kev ua kom haum ntsev kom zoo thiab kev tswj hwm ntsev crystallization
Qhov ntawd yog; los ntawm kev tsim ib qho kev thauj mus los tshwj xeeb, kev thauj mus los ntawm radial ntawm brine yog nce, uas ua rau kev coj mus rau crystallization ntawm ntsev. Qhov kev tsim no tsis tsuas yog tiv thaiv ntsev los ntawm depositing thiab clogging ntawm lub evaporator nto, tab sis kuj paub qhov zoo sau thiab siv ntsev, yog li no ho txhim kho efficiency thiab sustainability ntawm cov txheej txheem desalination.
Tshwj xeeb, lawv tau tsim thiab npaj ib lub qauv graphene gradient peb-seem raws li zaj duab xis melamine porous uas tau nias ua ntej . Lub network graphene gradient no, uas tsis tshua muaj sab hauv thiab ntom ntom sab nraud, tuaj yeem tsim qhov sib txawv ntawm lub zog radial capillary, uas txhawb nqa kev thauj mus los ntawm brine. Thaum cov pa dej tseem tsim, cov dej ntws radial ntawm brine ua rau cov brine concentration ntau ntxiv rau thaj chaw sab nraud, ua rau cov ntsev crystallize directional rau ntawm qhov chaw sab nraud es tsis yog sab hauv. Qhov kev tsim no ua kom ntseeg tau tias qhov chaw sab hauv ntawm lub evaporator tswj tau qhov chaw evaporation txaus, yog li ua tiav kev ua kom lub hnub ci evaporation zoo thiab ruaj khov.
Nws yog tsim nyog hais tias lub evaporator siv tag nrho cov txheej txheej rau ntsev crystallization, ua rau lub crystallization cheeb tsam loj dua lwm cov directional crystallization evaporators.
Cov kua ntsev yog tsim los ntawm cov pob zeb ntsev uas muaj kuab heev nrog cov pores ntau, uas muaj txiaj ntsig zoo rau kev thauj cov brine thiab tso tawm ntawm chav.
Tsis tas li ntawd, vim lub evaporative txias nyhuv, qhov kub thiab txias ntawm cov ntsev txheej yog qis dua qhov kub ntawm ambient. Cov yam ntxwv no ua rau lub evaporator nqus tau ntau lub zog los ntawm ib puag ncig, txhim kho kev ua haujlwm evaporation ntxiv.
Qhov chaw: Deep Tech
Pab pawg tshawb fawb: Shandong First Medical University Pab Pawg Tshawb Fawb
Tsab xov xwm no tau muab los ntawm: https://www.163.com/dy/article/J1RENDEH05119734.html
Yog xav paub ntxiv txog SINOYQX Melamine Foam, thov hu rau peb ntawm [email protected] lossis hu rau peb: + 86-28-8411-1861.
Qee cov duab thiab cov ntawv luam tawm los ntawm Is Taws Nem, thiab cov ntawv pov thawj yog los ntawm tus sau thawj. Yog tias muaj kev ua txhaum cai, thov hu rau peb kom tshem tawm.