mohloli: mocha

Lintho tse sa tloaelehang tsa lefatše(REEs) joalo kalanthanumleneodymiumke likarolo tsa bohlokoa tsa lisebelisoa tsa elektronike tsa morao-rao, ho tloha ho liselefouno le liphanele tsa letsatsi ho ea ho lisathelaete le likoloi tsa motlakase. Litšepe tsena tse boima li etsahala hohle ho re pota-pota, le hoja e le tse nyenyane haholo. Empa tlhokahalo e ntse e eketseha 'me kaha li etsahala maemong a tlase joalo, mekhoa ea khale ea ho ntša li-REE e ka ba e sa sebetseng hantle, ea silafatsa tikoloho,' me ea senya bophelo ba basebetsi.

Hona joale, ka chelete e tsoang ho Setsi sa Ts'ireletso ea Advanced Research Projects (DARPA) Environmental Microbes e le lenaneo la BioEngineering Resource (EMBER), bafuputsi ba Univesithi ea San Diego State ba ntse ba hlahisa mekhoa e tsoetseng pele ea ho hula ka sepheo sa ho matlafatsa phepelo ea malapeng ea li-REE.

Marina Kalyuzhnaya, setsebi sa baeloji le mofuputsi ea ka sehloohong, o itse: "Re leka ho theha mokhoa o mocha oa ho hlaphoheloa, o se nang tikoloho le o tsitsitseng haholoanyane."

Ho etsa sena, bafuputsi ba tla kenella molemong oa tlhaho oa libaktheria tse jang methane tse phelang maemong a feteletseng ho hapa li-REE tikolohong.

"Li hloka likarolo tse sa tloaelehang tsa lefats'e ho etsa e 'ngoe ea likarolo tsa bohlokoa tsa enzymatic mekhoeng ea tsona ea metabolism," ho boletse Kalyuzhnaya.

Li-REE li kenyelletsa likarolo tse ngata tsa lanthanide tsa tafole ea nakoana. Ka tšebelisano 'moho le Univesithi ea California, Berkeley le Pacific Northwest National Laboratory (PNNL), bafuputsi ba SDSU ba rera ho khutlisetsa morao mekhoa ea boenjiniere e lumellang baktheria ho kotula litšepe tikolohong. Ho utloisisa ts'ebetso ena ho tla tsebisa ho thehoa ha liprotheine tsa maiketsetso tsa maiketsetso tse tlamang ka ho khetheha mefuta e sa tšoaneng ea lanthanides, ho latela setsebi sa biochemist John Love. Sehlopha sa PNNL se tla tsebahatsa liphatsa tsa lefutso tsa libaktheria tse extremophilic le REE tse bokellanang, ebe li tšoaea mokhoa oa tsona oa REE.

Joale sehlopha se tla fetola libaktheria hore li hlahise liprotheine tse tlamang tšepe ka holim'a lisele tsa tsona, ho boletse Lerato.

Li-REE li batla li le ngata mehatleng ea merafo, lihlahisoa tsa litšila tse ling tsa tšepe, tse kang aluminium.

"Mehatla ea morafo ha e le hantle ke litšila tse ntseng li e-na le lisebelisoa tse ngata tsa bohlokoa ho eona," ho boletse Kalyuzhnaya.

Ho hloekisa le ho bokella li-REE ka hare, li-slurries tsena tsa metsi le majoe a pshatlehileng li tla tsamaisoa ka biofilter e nang le baktheria e fetotsoeng, e leng ho lumellang liprotheine tsa moqapi tse holim'a libaktheria hore li tlamahane le li-REE. Joalo ka libaktheria tse ratang methane tse neng li sebetsa e le lithempleite tsa tsona, libaktheria tse ntlafetseng li tla mamella maemo a feteletseng a pH, mocheso le letsoai, maemo a fumanoang mehatleng ea morafo.

Bafuputsi ba tla sebelisana 'moho le molekane oa indasteri, Palo Alto Research Center (PARC), k'hamphani ea Xerox, ho etsa bioprint boitsebiso bo nang le porous, sorbent bakeng sa tšebeliso ea biofilter. Theknoloji ena ea bioprinting e theko e tlaase ebile e ka fokotseha 'me ho nahanoa hore e tla fella ka ho boloka chelete e ngata ha e sebelisoa ka bophara ho khutlisa liminerale.

Ntle le ho leka le ho ntlafatsa biofilter, sehlopha se tla tlameha ho hlahisa mekhoa ea ho bokella li-lanthanide tse hloekisitsoeng ho tsoa ho biofilter ka boeona, ho latela moenjiniere oa tikoloho Christy Dykstra. Bafuputsi ba kopane le k'hamphani e qalang, Phoenix Tailings, ho leka le ho ntlafatsa mokhoa oa ho hlaphoheloa.

Hobane sepheo ke ho hlahisa mokhoa o ka sebelisoang khoebong empa e le oa botsoalle bakeng sa ho ntša li-REE, Dykstra le balekane ba 'maloa ba morero ba tla hlahloba litšenyehelo tsa tsamaiso ha ba bapisoa le mekhoa e meng ea ho fumana li-lanthanides, empa hape le phello ea tikoloho.

"Re lebeletse hore e tla ba le melemo e mengata ea tikoloho le litšenyehelo tse tlaase tsa matla ha li bapisoa le tse sebelisoang hona joale," ho boletse Dykstra. "Sistimi e kang ena e ka ba sistimi e sa sebetseng ea biofiltration, e nang le matla a fokolang. 'Me joale, ka khopolo, tšebeliso e fokolang ea lihlapolli tse kotsi tikolohong le lintho tse joalo. Mekhoa e mengata ea hona joale e tla sebelisa lihlapolli tse bohale le tse seng setsoalle tikolohong. ”

Dykstra e boetse e hlokomela hore kaha libaktheria lia ikatisetsa, theknoloji e thehiloeng ho likokoana-hloko lia inchafatsa, “ athe haeba re ne re ka sebelisa mokhoa oa lik’hemik’hale, re ne re tla tlameha ho tsoela pele ho hlahisa lik’hemik’hale tse eketsehileng.”

"Le haeba e tla bitsa chelete e nyane ho feta, empa ha e lematse tikoloho, seo se tla utloahala," ho boletse Kalyuzhnaya.

Sepheo sa morero o tšehelitsoeng ka lichelete ke DARPA ke ho fana ka bopaki ba khopolo ea theknoloji ea tsosoloso ea REE e tsamaisoang ke bio ka lilemo tse 'nè, eo Kalyuzhnaya a itseng e tla hloka pono ea leano le pono e fapaneng ea taeo.

O boetse a re projeke e tla fa baithuti ba tsoang sekolong sa SDSU monyetla oa ho nka karolo lipatlisisong tse fapaneng "le ho bona hore na mehopolo e ka hola joang ho tloha mehopolong feela ho fihlela boithuto ba liteko."

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Nako ea poso: Apr-17-2023