source: newscenter

Zosowa zapadziko lapansi(REEs) ngatilanthanumndineodymiumndizofunikira kwambiri zamagetsi zamakono, kuchokera ku mafoni a m'manja ndi ma solar solar kupita ku ma satellites ndi magalimoto amagetsi. Zitsulo zolemerazi zimapezeka pozungulira ife, ngakhale zili zochepa kwambiri. Koma kufunikira kukupitilira kukwera ndipo chifukwa zimachitika m'malo otsika kwambiri, njira zachikhalidwe zochotsera ma REE zitha kukhala zopanda ntchito, zowononga chilengedwe, komanso kuwononga thanzi la ogwira ntchito.

Tsopano, mothandizidwa ndi ndalama kuchokera ku Defense Advanced Research Projects Agency (DARPA) Environmental Microbes monga pulogalamu ya BioEngineering Resource (EMBER), ofufuza a San Diego State University akupanga njira zotsogola zotsogola ndi cholinga chokweza ma REE.

"Tikuyesera kukhazikitsa njira yatsopano yochiritsira yomwe ndi yosamalira zachilengedwe komanso yokhazikika," adatero katswiri wa zamoyo komanso wofufuza wamkulu Marina Kalyuzhnaya.

Kuti achite izi, ofufuzawo awona momwe mabakiteriya omwe amawononga methane amakhala m'malo ovuta kwambiri kuti agwire ma REE kuchokera ku chilengedwe.

"Amafunikira zinthu zapadziko lapansi zomwe zimasowa kuti zipangitse chimodzi mwazinthu zofunikira kwambiri za kagayidwe kachakudya," adatero Kalyuzhnaya.

Ma REE amaphatikiza zinthu zambiri za lanthanide patebulo la periodic. Mothandizana ndi University of California, Berkeley ndi Pacific Northwest National Laboratory (PNNL), ofufuza a SDSU akukonzekera kukonzanso njira zachilengedwe zomwe zimalola mabakiteriya kukolola zitsulo kuchokera ku chilengedwe. Kumvetsetsa ndondomekoyi kudzadziwitsa kupangidwa kwa mapuloteni opangidwa ndi opanga omwe amamangiriza kwambiri ku mitundu yosiyanasiyana ya lanthanides, malinga ndi biochemist John Love. Gulu la PNNL lidzazindikiritsa zomwe zimayambitsa mabakiteriya ochulukirapo ndi REE omwe akusonkhanitsa mabakiteriya, ndikuwonetsa momwe REE amachitira.

Gululo lidzasintha mabakiteriya kuti apange mapuloteni omanga zitsulo pamwamba pa maselo awo, adatero Chikondi.

Ma REE ndi ochulukirapo m'michira ya migodi, zotayidwa zazitsulo zina, monga aluminiyamu.

"Zovala zamigodi ndizowonongeka zomwe zikadali ndi zinthu zambiri zothandiza," adatero Kalyuzhnaya.

Kuyeretsa ndi kusonkhanitsa ma REE mkati, ma slurries awa amadzi ndi miyala yophwanyidwa adzayendetsedwa kudzera mu biofilter yomwe ili ndi mabakiteriya osinthidwa, zomwe zimalola mapuloteni opanga pamwamba pa mabakiteriya kuti amangirire ku REEs. Monga mabakiteriya okonda methane omwe adakhala ngati ma template awo, mabakiteriya osinthika amatha kulekerera pH, kutentha ndi mchere, zomwe zimapezeka mumichira yamigodi.

Ofufuzawa agwirizana ndi mnzake wapakampani, Palo Alto Research Center (PARC), kampani ya Xerox, kuti apange bioprint porous, sorbent material kuti agwiritse ntchito mu biofilter. Tekinoloje ya bioprinting imeneyi ndi yotsika mtengo komanso yowonjezereka ndipo ikuyembekezeka kubweretsa ndalama zambiri ikagwiritsidwa ntchito kwambiri pakubwezeretsa mchere.

Kuphatikiza pa kuyesa ndi kukhathamiritsa biofilter, gululi liyeneranso kupanga njira zosonkhanitsira lanthanides oyeretsedwa kuchokera mu biofilter yokha, malinga ndi katswiri wazachilengedwe Christy Dykstra. Ofufuzawa adagwirizana ndi kampani yoyambira, Phoenix Tailings, kuyesa ndikukonza njira yochira.

Chifukwa cholinga chake ndikukhazikitsa njira yogulitsira malonda koma yowongoka pochotsa ma REE, Dykstra ndi angapo ogwirizana nawo polojekitiyi azisanthula mtengo wa dongosololi poyerekeza ndi matekinoloje ena obwezeretsanso lanthanides, komanso momwe chilengedwe chimakhudzira.

"Timayembekezera kuti zingakhale zopindulitsa zambiri zachilengedwe komanso kuchepetsa mphamvu zamagetsi poyerekeza ndi zomwe zimagwiritsidwa ntchito panopa," adatero Dykstra. "Dongosolo ngati ili lingakhale lopanda mphamvu, lokhala ndi mphamvu zochepa. Ndiyeno, mwamwano, kugwiritsa ntchito mochepa kwa zosungunulira zowononga chilengedwe ndi zinthu monga choncho. Njira zambiri zamakono zimagwiritsa ntchito zosungunulira zankhanza komanso zosawononga chilengedwe. ”

Dykstra ananenanso kuti popeza mabakiteriya amadzichulukitsa okha, umisiri wopangidwa ndi tizilombo timangodzisintha tokha, “koma ngati titati tigwiritse ntchito mankhwala, tifunika kumangotulutsa mankhwala ambiri.”

"Ngakhale zingawononge ndalama zochulukirapo, koma sizikuwononga chilengedwe, zitha kukhala zomveka," adatero Kalyuzhnaya.

Cholinga cha pulojekiti yothandizidwa ndi DARPA ndi kupereka umboni wa chidziwitso chaukadaulo wotsogola wa REE-recovery m'zaka zinayi, zomwe Kalyuzhnaya adati zidzafuna masomphenya anzeru komanso malingaliro owongolera.

Ananenanso kuti ntchitoyi ipereka mwayi kwa ophunzira omaliza maphunziro a SDSU mwayi wochita nawo kafukufuku wosiyanasiyana "ndikuwona momwe malingaliro angakulire kuchokera kumalingaliro okha mpaka kuwonetsa ziwonetsero."

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Nthawi yotumiza: Apr-17-2023