Ua hōʻike ʻo Chalmers University of Technology ma Suedena i kahi ʻano hana hou no ka hana hou ʻana i nā pila kaʻa uila. ʻAʻole pono ke kaʻina hana i nā kemika pipiʻi a ʻino paha no ka mea ua hoʻohana nā mea noiʻi i ka waikawa oxalic, kahi waikawa organik i loaʻa i loko o ke aupuni mea kanu.
Hiki i ke kaʻina hana ke hoʻihoʻi i ka 100% o ka alumini a me 98% o ka lithium mai nā pila kaʻa uila, e like me ke kulanui. Hoʻemi pū kēia i ka nalowale o nā mea maka waiwai nui e like me ka nickel, cobalt a me ka manganese.
Ma ke Keʻena Hoʻopōʻaiapuni Pākahi o ke Kulanui ʻo Chalmers, ua hoʻāʻo kekahi hui e hana i nā mea ʻeleʻele, kahi hui pauka o nā mea hana koʻikoʻi i loko o nā pila, i loko o ka waikawa oxalic. Ma ke ʻano kūikawā, ke kamaʻilio nei mākou e pili ana i ka pila kaʻa uila Volvo. Ua wehewehe ka memo i ke kaʻina hana e like me ka "hana kope." ʻO ka ʻoiaʻiʻo, ʻoi aku ka paʻakikī o nā mea āpau, ʻoiai i mea e hiki ai i ke kaʻina hana waikawa oxalic ke hana i ka hopena i makemake ʻia, pono e koho pololei i ka mahana, ka noʻonoʻo a me ka lōʻihi. Ma ke ala, loaʻa ka waikawa oxalic i nā mea kanu e like me ka rhubarb a me ka spinach.
"A hiki i kēia manawa, ʻaʻohe mea i hiki ke loaʻa nā kūlana kūpono no ka hoʻokaʻawale ʻana i ka nui o ka lithium me ka hoʻohana ʻana i ka waikawa oxalic a me ka wehe ʻana i ka alumini āpau. No ka mea, aia nā pila āpau i ka alumini, pono mākou e hiki ke wehe iā ia me ka ʻole o ka nalowale ʻana o nā metala ʻē aʻe. " wahi a ke kemika o ke kulanui, wehewehe ʻo Leah Rouquette, he haumāna puka ma ke keʻena.
I nā kaʻina hana hydrometallurgical i hoʻohana ʻia i kēia manawa, hoʻoheheʻe ʻia nā mea ferrous i loko o nā waikawa inorganic. A laila wehe ʻia nā "mea haumia" e like me ka alumini a me ke keleawe a hoʻihoʻi ʻia nā mea hana e like me ka cobalt, nickel, manganese a me ka lithium.
Eia nō naʻe, ua ʻōlelo nā kānaka noiʻi Suedena ʻoiai he mau ʻāpana liʻiliʻi o ke koena o ka alumini a me ke keleawe e pono ai nā ʻanuʻu hoʻomaʻemaʻe he nui, a ʻo kēlā me kēia ʻanuʻu i ke kaʻina hana hiki ke hopena i ka nalowale o ka lithium. Ma ka hoʻohana ʻana i ke ʻano hana hou, ua hoʻohuli nā kānaka noiʻi i ke kauoha a hoʻemi mua i ka lithium a me ka alumini. ʻAe kēia iā lākou e hōʻemi i ka hoʻonele ʻana i nā metala makamae e pono ai e hana i nā pila hou.
Hiki ke hoʻohālikelike ʻia ka hana aʻe me ke hana ʻana i ke kofe: ʻoiai aia ka alumini a me ka lithium i loko o ka wai, noho nā metala i koe i loko o ka "paʻa". ʻO ka hana aʻe i kēia kaʻina hana, ʻo ia ka hoʻokaʻawale ʻana i ka alumini a me ka lithium. "No ka mea, he ʻokoʻa loa nā ʻano o kēia mau metala, ʻaʻole mākou e manaʻo he paʻakikī ke hoʻokaʻawale iā lākou. ʻO kā mākou ʻano hana he ala hou e hoʻohiki ai e hana hou i nā pila e pono ke ʻimi hou aku," wahi a Rouquette.
"Pono mākou i nā mea ʻē aʻe i nā kemika inorganic. ʻO kekahi o nā pilikia nui i nā kaʻina hana o kēia wā, ʻo ia ka wehe ʻana i nā mea i koe e like me ka alumini. He ala hou kēia e hiki ai ke hāʻawi i nā mea ʻē aʻe hou i ka ʻoihana hoʻokele ʻōpala a kōkua i ka hoʻoponopono ʻana i nā pilikia e kāohi ana i ka ulu ʻana," wahi a ke polopeka o ka ʻoihana. ʻO Martina Petranikova Eia naʻe, ua hoʻohui ʻo ia e pono ana ke ʻano hana i ka noiʻi hou aku: "ʻOiai hiki ke hoʻonui ʻia kēia ʻano hana, ke manaʻolana nei mākou e hiki ke hoʻohana ʻia i ka ʻoihana i nā makahiki e hiki mai ana."
Mai ka makahiki 2011, ua uhi mākou i ka hoʻomohala ʻana o nā kaʻa uila me ka makemake nui a me ka ʻike loea i ka nūpepa. Ma ke ʻano he alakaʻi pāpāho loea o ka ʻoihana, hāʻawi mākou i ka uhi piha o nā hanana kiʻekiʻe loa, e lawelawe ana ma ke ʻano he kahua waena no ka hoʻomohala wikiwiki ʻana o kēia ʻenehana. Hoʻokomo pū ʻia nā nūhou, ka ʻike hope, nā hōʻike hoʻokele, nā nīnauele, nā wikiō a me nā ʻike hoʻolaha.