gwero:Phys.org

Zinthu zapadziko lapansi zomwe sizipezeka kuchokera ku miyala yamtengo wapatali ndizofunika kwambiri pa moyo wamakono koma kuziyenga pambuyo pa migodi kumawononga ndalama zambiri, kumawononga chilengedwe ndipo nthawi zambiri kumachitika kunja.

Kafukufuku watsopano akufotokoza umboni wa mfundo za uinjiniya wa bakiteriya, Gluconobacter oxydans, womwe umatenga gawo lalikulu pakukwaniritsa zofunikira zapadziko lapansi zomwe zimasoweka kwambiri m'njira yogwirizana ndi mtengo ndi mphamvu ya m'zigawo zachikhalidwe za thermochemical ndi njira zoyenga. kukumana ndi miyezo ya zachilengedwe yaku US.

"Tikuyesera kuti tipeze njira yosamalira zachilengedwe, yotsika, yotsika, yochepetsera kutulutsa zinthu zapadziko lapansi zomwe sizipezeka mwala," adatero Buz Barstow, mlembi wamkulu wa pepalali komanso pulofesa wothandizira pazachilengedwe komanso zachilengedwe. Yunivesite ya Cornell.

Zinthu zomwe zili ndi 15 patebulo la periodic - ndizofunikira pa chirichonse kuchokera ku makompyuta, mafoni a m'manja, zowonetsera, maikolofoni, makina opangira mphepo, magalimoto amagetsi ndi ma conductor ku radars, sonars, magetsi a LED ndi mabatire owonjezera.

Ngakhale kuti dziko la US linakonza kale zinthu zake zomwe zasowa padziko lapansi, kupanga kumeneku kunayima zaka zoposa makumi asanu zapitazo. Tsopano, kuyengedwa kwa zinthu izi kumachitika pafupifupi m'maiko ena, makamaka China.

"Zambiri zopanga zinthu zosowa zapadziko lapansi komanso kukumba zili m'manja mwa mayiko akunja," atero wolemba mnzake Esteban Gazel, mnzake wa pulofesa wa sayansi yapadziko lapansi ndi zakuthambo ku Cornell. "Chotero kuti chitetezo cha dziko lathu komanso moyo wathu ukhale wabwino, tiyenera kubwereranso panjira yolamulira gwerolo."

Kuti akwaniritse zosowa zapachaka zaku US zapadziko lapansi, pafupifupi matani 71.5 miliyoni (~ matani 78.8 miliyoni) a ore amayenera kutulutsa ma kilogalamu 10,000 (~22,000 mapaundi) azinthu.

Njira zamakono zimadalira kusungunuka kwa thanthwe ndi sulfuric acid yotentha, kutsatiridwa ndi kugwiritsa ntchito zosungunulira za organic kuti zilekanitse zinthu zofanana kwambiri kuchokera kwa wina ndi mzake mu njira yothetsera.

"Tikufuna kupeza njira yopangira cholakwika chomwe chimagwira ntchito bwino," adatero Barstow.

G. oxydans amadziwika popanga asidi wotchedwa biolixiviant amene amasungunula mwala; mabakiteriya amagwiritsa ntchito asidi kukoka phosphates kuchokera osowa nthaka zinthu. Ofufuzawa ayamba kugwiritsa ntchito majini a G. oxydans kotero amachotsa zinthuzo moyenera.

Kuti achite izi, ofufuzawo adagwiritsa ntchito ukadaulo womwe Barstow adathandizira kupanga, yotchedwa Knockout Sudoku, yomwe idawalola kuletsa majini a 2,733 mu genome ya G. oxydans imodzi ndi imodzi. Gululo lidasankha masinthidwe, iliyonse ili ndi jini inayake yotulutsidwa, kuti athe kuzindikira kuti ndi chibadwa chanji chomwe chimagwira ntchito pochotsa zinthu mumwala.

"Ndili ndi chiyembekezo chodabwitsa," adatero Gazel. "Tili ndi ndondomeko pano yomwe idzakhala yopambana kuposa zonse zomwe zinkachitika kale."

Alexa Schmitz, wofufuza wa postdoctoral mu labu ya Barstow, ndiye wolemba woyamba wa kafukufukuyu, "Gluconobacter oxydans Knockout Collection Finds Improved Rare Earth Element Extraction," lofalitsidwa mu Nature Communications.

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Nthawi yotumiza: Nov-19-2021