Asayansi apanga njira yosamalira zachilengedwe yobwezeretsanso REE ku phulusa la ntchentche za malasha
Ofufuza ku Georgia Institute of Technology, apanga njira yosavuta yopezera zinthu zapadziko lapansi zomwe sizipezeka kuchokera ku phulusa la ntchentche za malasha pogwiritsa ntchito madzi a ayoni komanso kupewa zinthu zowopsa. Mu pepala lofalitsidwa mu nyuzipepala ya Environmental Science & Technology, asayansi akufotokoza kuti zakumwa za ionic zimaonedwa kuti ndizosavulaza zachilengedwe ndipo zimatha kugwiritsidwanso ntchito.Imodzi makamaka, betainium bis(trifluoromethylsulfonyl)imide kapena [Hbet][Tf2N], imasungunula ma oxide osowa padziko lapansi pamwamba pa zitsulo zina. Malinga ndi asayansi, madzi a ayoni amasungunukanso m'madzi mwapadera akatenthedwa kenako amagawanika m'magawo awiri akakhazikika.Podziwa izi, adakhazikitsa kuti ayese ngati angakoke bwino komanso mwamakonda zinthu zomwe akufuna kuchokera ku phulusa la ntchentche za malasha komanso ngati zitha kutsukidwa bwino, ndikupanga njira yomwe ili yotetezeka komanso yopanda zinyalala. Kuti achite izi, gululo linachotsa phulusa la ntchentche za malasha ndi mankhwala a alkaline ndikuliumitsa.Kenako, adatenthetsa phulusa loyimitsidwa m'madzi ndi [Hbet][Tf2N], ndikupanga gawo limodzi.Pamene utakhazikika, zothetsera analekanitsidwa.Madzi a ionic adatulutsa zinthu zopitilira 77% zapadziko lapansi kuchokera kuzinthu zatsopano, ndipo adapezanso kuchuluka kwambiri (97%) kuchokera ku phulusa lonyowa lomwe lakhala zaka zambiri m'dziwe losungiramo.Gawo lomaliza la ndondomekoyi linali kuvula zinthu zapadziko lapansi zomwe sizipezeka mumadzimadzi aayoni okhala ndi asidi osungunuka. Ofufuzawo adapezanso kuti kuwonjezera betaine panthawi ya leaching kumawonjezera kuchuluka kwa zinthu zapadziko lapansi zomwe zimachotsedwa. Scandium, yttrium, lanthanum, cerium, neodymium ndi dysprosium zinali zina mwa zinthu zomwe zidachira. Pomaliza, gululo linayesa kuyambiranso kwa madzi a ionic pomutsuka ndi madzi ozizira kuti achotse asidi ochulukirapo, osapeza kusintha kwake pakutulutsa kwake kudzera m'mizere itatu yoyeretsa. "Njira yochepetsera zinyalalayi imapanga yankho lolemera mu zinthu zapadziko lapansi zosowa, zokhala ndi zonyansa zochepa, ndipo zitha kugwiritsidwa ntchito kukonzanso zinthu zamtengo wapatali kuchokera ku unyinji wa phulusa la malasha lomwe limasungidwa m'mayiwe osungira," adatero asayansi m'mawu ake atolankhani. Zomwe zapezazi zithanso kukhala zofunika kwambiri kumadera omwe amapanga malasha, monga Wyoming, omwe akuyang'ana kuti ayambitsenso makampani awo akumaloko poyang'anizana ndi kuchepa kwa kufunikira kwamafuta.
Nthawi yotumiza: Jul-04-2022 