Vesainzi vanogadzira nzira ine hushamwari hwezvakatipoteredza yekudzoreredza REE kubva kumadota enhunzi yemarasha
Vatsvagiri veGeorgia Institute of Technology, vakagadzira nzira iri nyore yekudzoreredza zvisingawanzo zvinhu zvepasi kubva mumadota enhunzi yemarasha vachishandisa mvura yeionic uye kudzivirira zvinhu zvine njodzi. Mune bepa rakaburitswa mujenari Environmental Science & Technology, masayendisiti anotsanangura kuti zvinwiwa zveionic zvinoonekwa sezvisina kunaka uye zvinogona kushandiswa zvakare. Imwe kunyanya, betainium bis(trifluoromethylsulfonyl)imide kana [Hbet][Tf2N], inonyungudutsa zvisingawanzo-earth oxides pamusoro pemamwe simbi oxides. Sekureva kwevasayendisiti, iyo ionic fluid zvakare inonyungudika mumvura kana ichipisa uye yobva yapatsanuka kuita zvikamu zviviri kana yatonhodzwa. Nekuziva izvi, vakamisikidza kuti vaedze kana zvichinyatso dhonza zvinhu zvinodikanwa kubva mumadota enhunzi yemarasha uye kuti inganyatsocheneswa here, kugadzira nzira isina njodzi uye inoburitsa tsvina shoma. Kuti zvidaro, timu yakagadzira dota remarasha neine alkaline solution ndokuiomesa. Zvadaro, vaipisa madota akarembera mumvura ne[Hbet][Tf2N], vachigadzira chikamu chimwe chete. Kana yatonhodzwa, zvigadziriso zvinoparadzaniswa. Iyo ionic fluid yakaburitsa zvinopfuura 77% yezvinhu zvisingawanzo pasi kubva kune zvinyoro zvinhu, uye yakawana yakatonyanya kukwira muzana (97%) kubva kumadota emhepo akange apedza makore ari mudziva rekuchengetedza. Chikamu chekupedzisira chemaitiro acho chaive chekubvisa zvisingawanzo-zvinhu zvepasi kubva kune ionic fluid ine dilute acid. Vatsvakurudzi vakawanawo kuti kuwedzera betaine panguva yenhanho yekudzidzira kwakawedzera huwandu hwezvinhu zvisingawanzo-nyika zvakabviswa. Scandium, yttrium, lanthanum, cerium, neodymium uye dysprosium zvaiva pakati pezvinhu zvakadzorerwa. Pakupedzisira, timu yakaedza kushandiswa kweiyo ionic liquid nekuigeza nemvura inotonhora kuti ibvise asidi yakawandisa, isingawane shanduko mukudhirowa kwayo kuburikidza nematatu matatu ekuchenesa-leaching. "Iyi nzira yakaderera-marara inoburitsa mhinduro yakapfuma muzvinhu zvisingawanzo pasi, isina tsvina shoma, uye inogona kushandiswa kudzokorora zvinhu zvakakosha kubva mukuwanda kwemadota enhunzi yemarasha akachengetwa mumadziva ekuchengetera," masayendisiti akadaro mune nhepfenyuro. Zvakawanikwa zvinogona zvakare kukosha kumatunhu anogadzira marasha, akadai seWyoming, ari kutsvaga kudzoreredza indasitiri yemuno pamberi pekudzikira kuri kuita mafuta efossil.
Nguva yekutumira: Jun-28-2021