kunobva:Phys.org

Zvinhu zvisingawanzoitiki zvepasi kubva mumatombo zvakakoshera hupenyu hwanhasi asi kuzvinatsa mushure mekuchera migodhi kunodhura, kunokuvadza nharaunda uye kazhinji kunoitika kunze kwenyika.

Chidzidzo chitsva chinotsanangura humbowo hwemusimboti weinjiniya bhakitiriya, Gluconobacter oxydans, inotora nhanho hombe yekutanga kusangana nekukwira kwepasi risingawanzo kudiwa chinhu nenzira inoenderana nemutengo uye kugona kwechinyakare thermochemical kudhirowa uye nzira dzekunatsiridza uye yakachena zvakakwana. kusangana neUS yezvakatipoteredza zviyero.

"Tiri kuyedza kuunza nzira ine hushamwari kwezvakatipoteredza, yakaderera-kupisa, yakaderera-inodzvinyirira nzira yekutora zvisingawanzo zvinhu zvepasi kubva mudombo," akadaro Buz Barstow, munyori mukuru webepa uye mubatsiri purofesa webiological and environment engineering pa. Cornell University.

Zvinhu-izvo zvine gumi neshanu mutafura yeperiodic-zvakakosha kune zvese kubva kumakomputa, nharembozha, zvidzitiro, maikorofoni, mhepo turbines, mota dzemagetsi uye conductors kune radar, sonars, mwenje we LED uye mabhatiri anochajiswa.

Ipo iyo US yakambogadzirisa yayo isingawanzo zvinhu zvepasi, kugadzirwa ikoko kwakamira anopfuura makumi mashanu emakore apfuura. Ikozvino, kunatswa kwezvinhu izvi kunoitika mune dzimwe nyika, kunyanya China.

"Ruzhinji rweasingawanzo kugadzirwa kwepasi uye kutorwa kuri mumaoko edzimwe nyika," akadaro munyori-munyori Esteban Gazel, purofesa wepasi uye sainzi yemhepo kuCornell. "Saka kuitira kuchengetedzeka kwenyika yedu nemararamiro, tinofanirwa kudzoka panzira yekudzora zviwanikwa."

Kuzadzisa zvinodiwa zvepagore zveUS zvezvisingawanzo zvinhu zvepasi, angangoita 71.5 miriyoni matani (~ 78.8 miriyoni matani) eore mbishi angazodiwa kuburitsa zviuru gumi zvemakirogiramu (~ 22,000 mapaundi) zvezvinhu.

Nzira dzemazuva ano dzinotsamira pakunyunguduka kwedombo neinopisa sulfuric acid, inoteverwa nekushandisa organic solvents kuparadzanisa zvinhu zvakafanana zvakanyanya kubva kune imwe neimwe mumhinduro.

"Tinoda kutsvaga nzira yekugadzira bug inoita basa iri nani," Barstow akadaro.

G. oxydans inozivikanwa nekugadzira asidhi inonzi biolixiviant inonyungudutsa dombo; mabhakitiriya anoshandisa asidhi kudhonza phosphates kubva zvisingawanzoitiki zvinhu zvepasi. Vatsvakurudzi vatanga kushandisa maG. oxydans 'majini saka inobvisa maelementi zvakanyanya.

Kuti vaite kudaro, vatsvakurudzi vakashandisa teknolojia iyo Barstow akabatsira kugadzira, inonzi Knockout Sudoku, iyo yakavabvumira kudzima 2,733 genome muG. oxydans 'genome imwe neimwe. Chikwata chakabata mutants, imwe neimwe iine gene rakaburitswa, kuti vaone kuti ndeapi majini anoita basa mukuburitsa zvinhu kubva mudombo.

"Ndine tariro huru," Gazel akadaro. "Tine nzira pano ichave inobudirira kupfuura chero yakamboitwa."

Alexa Schmitz, muongorori wepashure muBarstow's lab, ndiye wekutanga munyori wechidzidzo ichi, "Gluconobacter oxydans Knockout Collection Inowana Yakavandudzwa Rare Earth Element Extraction," yakaburitswa muNature Communications.

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Nguva yekutumira: Nov-19-2021