Masu bincike daga Jami'ar Fasaha ta Chalmers sun gabatar da wata sabuwar hanya mai inganci ta sake amfani da karafa daga batirin ababen hawa masu amfani da wutar lantarki. Wannan hanyar tana dawo da kashi 100% na aluminum da kashi 98% na lithium daga batirin EV da aka yi amfani da su. Wannan yana rage asarar kayan masarufi masu mahimmanci kamar nickel, cobalt da manganese. Tsarin ba ya buƙatar sinadarai masu tsada ko masu cutarwa saboda masu binciken sun yi amfani da oxalic acid, wani acid da ake samu a masarautar shuka.
Zuwa yanzu, babu wanda ya sami damar samun yanayi mai dacewa don raba wannan adadin lithium ta amfani da sinadarin oxalic acid da kuma cire dukkan aluminum. Leah Rouquette, daliba ta PhD a Sashen Kimiyyar Sinadarai da Injiniyan Sinadarai a Jami'ar Fasaha ta Chalmers, ta ce tunda dukkan batura suna ɗauke da aluminum, ya kamata mu iya cire shi ba tare da rasa wasu ƙarfe ba.
A dakin gwaje-gwajen sake amfani da batir a Jami'ar Fasaha ta Chalmers, Leah Rouquette da shugabar bincike Martina Petranikova sun nuna yadda sabuwar hanyar take aiki. Dakin gwaje-gwajen ya ƙunshi batirin mota da aka yi amfani da shi, kuma a cikin murfin hayaki akwai kayan da aka niƙa a cikin siffar foda baƙi da aka niƙa a cikin ruwa mai tsabta - oxalic acid. Leah Rouquette tana amfani da abin da ke kama da injin haɗa ruwa da foda don haɗa ruwa da foda. Kodayake yana kama da mai sauƙi kamar tana yin kofi, hanyar ta musamman ta musamman ce kuma wata nasara ce ta kimiyya da aka buga kwanan nan. Ta hanyar daidaita yanayin zafi, yawan amfani da lokaci, masu binciken sun ƙirƙiri sabon girke-girke wanda ke amfani da oxalic acid, wani sinadari mai kyau ga muhalli wanda kuma ake samu a cikin tsire-tsire kamar rhubarb da alayyafo.
Ana buƙatar wasu hanyoyin da za a bi don magance matsalolin da ba su shafi sinadarai na yau da kullun ba. Bugu da ƙari, ɗaya daga cikin manyan matsalolin da ke tattare da hanyoyin zamani shine cire kayan da suka rage kamar aluminum. Martina Petranikova, Farfesa a Sashen Kimiyyar Sinadarai da Injiniyan Sinadarai a Jami'ar Fasaha ta Chalmers, ta ce wata hanya ce mai ƙirƙira wadda za ta iya samar da sabbin hanyoyin magance matsalolin da ke hana ci gaba.
Ana kiran hanyoyin sarrafa ruwa da aka yi da hydrometallurgy. A cikin hydrometallurgy na gargajiya, ana fara cire "ƙazanta" daga kayan aiki kamar aluminum da jan ƙarfe, sannan ana iya amfani da karafa masu daraja kamar lithium, cobalt, nickel da manganese. Duk da cewa ƙaramin adadin aluminum da jan ƙarfe ne kawai suka rage, ana buƙatar matakai da yawa na tsarkakewa, kuma kowane mataki na aikin yana haifar da zubewa. A cikin sabuwar hanyar, masu binciken sun canza yankewar kuma suka fara raba lithium daga aluminum. Ta wannan hanyar, za su iya rage ɓarnar ƙarfe masu daraja da ake buƙata don yin sabbin batura.
Ko da rabin aikin na biyu—tace cakuda mai duhu—yana kama da yin kofi. Yayin da aluminum da lithium ke shiga cikin ruwan, sauran ƙarfe suna nan a cikin "sump." Mataki na gaba a cikin wannan tsari shine raba aluminum da lithium.
"Saboda waɗannan karafa suna da halaye daban-daban, mun yi imanin cewa raba su ba zai yi wahala ba. Sabuwar hanyarmu ta buɗe wata sabuwar hanya mai kyau don sake amfani da batir wanda muke da duk abin da zai ƙarfafa mu mu ci gaba da bincike," in ji Leah Rouquette. "Tunda ana iya amfani da hanyar a babban sikelin, muna fatan za ta yi amfani a masana'antu a cikin shekaru masu zuwa," in ji Martina Petranikova.
Ƙungiyar bincike ta Martina Petranikova ta shafe shekaru da yawa tana gudanar da manyan bincike kan sake amfani da ƙarfe a cikin batirin lithium-ion. Ƙungiyar tana haɗin gwiwa da kamfanonin da ke da hannu a sake amfani da batirin motocin lantarki kuma abokin tarayya ne a cikin manyan ayyukan bincike da ci gaba kamar Volvo Cars da aikin Nybat na Northvolt.
Ƙarin bayani game da binciken: An buga labarin kimiyya mai taken "Cikakken zaɓi na dawo da lithium daga batirin motar lantarki na lithium-ion: ƙirar samfura da ingantawa ta amfani da oxalic acid a matsayin mai rage kiba" a cikin mujallar Separation and Purification Technology. Leah Rouquette, Martina Petranikova da Natalia Viceli daga Sashen Kimiyya da Injiniyan Sinadarai na Jami'ar Fasaha ta Chalmers ne suka gudanar da binciken. Hukumar Makamashi ta Sweden, Cibiyar Batirin Sweden da Vinnova ne suka dauki nauyin binciken, kuma an gudanar da gwaje-gwajen ta amfani da batirin motar lantarki na Volvo Cars da aka yi amfani da su wanda Stena Recycling da Akkuser Oy suka sarrafa.
Muna buga labarai da yawa daga kwararru a fannoni daban-daban. Wannan shine asusunmu na waɗannan mutane na musamman, ƙungiyoyi, cibiyoyi da kamfanoni.
Tashoshin jiragen ruwa za su yi shiru, ba za su gurɓata ba, ba za su fitar da iskar gas mai gurbata muhalli ba kuma za su fi inganci. Kowa zai samu sauƙi…
Yi rijista don samun wasiƙar labarai ta imel ta CleanTechnica ta yau da kullun. Ko kuma ku biyo mu a Labaran Google! Kowace canjin fasaha tana da shugabanni masu ƙirƙira…
Kwanan nan, Jefferies Group, ɗaya daga cikin manyan bankunan saka hannun jari a Amurka, ta gayyace ni don yin magana da abokan cinikinta na duniya, masu zuba jari a cibiyoyi...
Yi rijista don samun wasiƙar labarai ta imel ta CleanTechnica ta yau da kullun. Ko kuma ku biyo mu a Labaran Google! Sanarwa da Zuba Jari a Bangarorin Masu Zaman Kansu a Batura da Aka Yi a Amurka…
Haƙƙin mallaka © 2023 CleanTechnica. Abubuwan da aka ƙirƙira a wannan shafin don nishaɗi ne kawai. Ra'ayoyin da aka bayyana a wannan gidan yanar gizon ba za a amince da su ba kuma ba lallai bane su nuna ra'ayoyin CleanTechnica, masu shi, masu tallafawa, masu haɗin gwiwa ko rassanta.