Prometheus Fuels
Prometheus Fuels shine farkon makamashin Amurka kayan aikin haɓaka don tace yanayi CO<sub id="mwCg">2</sub> ta amfani da ruwa, wutar lantarki, da membranes nanotube don samar da mai mai sauƙin kasuwanci. Lokacin da aka kunna wutar lantarki ta hanyar sabunta wutar lantarki, e-man fetur da'aka samar ta irin waɗannan hanyoyin kama iska kai tsaye ba sa ba da gudummawar ƙara hayaki, yana mai da su tsaka tsaki na carbon. Aikin ya kasance ɗaya daga cikin biyu da aka zaɓa don saka hannun jari acikin Maris na 2019 ta Y Combinator, fitaccen mai shigar da kasuwancin Silicon Valley, bayan neman shawarwarin da ke magance cire carbon.

Tsarin yana amfani da maganin ruwa mai ruwa da CO2 wanda aka fallasa zuwa farantin tagulla mai lantarki. Wannan yana haifar da amsawa kuma yana samar da barasa mai (mafi yawancin ethanol). Fitattun matatun da akayi daga cylindrical carbon nanotubes da aka saka acikin filastik suna bada izinin ethanol yayin da suke toshe kwayoyin ruwa. Daga can, mafi yawan bayani mai mahimmanci na kusan 95% ethanol za'a iya catalyzed tareda zeolite don shiga cikin mafi hadaddun hydrocarbons, ciki harda fetur, dizal, ko jet man fetur. Wannan dabarar tana aiki a cikin zafin jiki, yayin da hanyoyin al'ada na hakar na buƙatar zafi don kawar da shi daga mafita. Wanda ya kafa Rob McGinnis yayi hasashe cewa duk da cewa ingantaccen tsarin tsarin Prometheus shine kawai 50-60%, tsarinsu mai ƙarancin kuzari  zai iya rage yawan farashi gabaɗaya kuma ya kasance gasa tare da mai.

A watan Yuni 2020, BMW ya ba da sanarwar zuba jari na dalar Amurka miliyan 12.5 acikin Man Fetur na Prometheus. Wani sashe na gidan yanar gizon BMW na hukuma ya ayyana cewa "Ta hanyar daidaita halayen sinadarai da matakai, Prometheus zai sanya mai maye gurbin da ba shida laifi. Prometheus zai taimaka wajen samar da ikon zabi." Wani kamfanin saka hannun jari na kasar Norway mai suna Tjuvholmen Ventures wanda ya saka hannun jari kan wasu kananan kamfanonin makamashin kore ya zuba jari a kamfanin Prometheus Fuels.

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