Hiki ke hoʻomaʻemaʻe ke kaʻina hana like e hoʻokumu ai i nā ʻōpala i loko o nā kīnikelamai ka wai kai, e like me ka noiʻi hou mai ka mokupuni ʻo South Pacific o New Caledonia.
ʻO ka mining Nickel ka ʻoihana nui o New Caledonia, a ʻo ka mokupuni liʻiliʻi kekahi o nā mea hana nui loa o ka metala ma ka honua.Akā, ʻo ka hui pū ʻana o nā quarries nui a me ka ua nui, ʻo ia ka nui o ka nickel, a me ke kēpau a me nā metala ʻē aʻe, e pau ana i nā wai a puni ka mokupuni.Hiki ke hoʻopōʻino i ke olakino o ke kanaka no ka hoʻohaumia ʻana i ka nikela i ka piʻi ʻana o ka iʻa a me ka iʻa i ka piʻi ʻana i ke kaulahao meaʻai.
Ua noʻonoʻo ʻo Marc Jeannin, he ʻenekinia kaiapuni ma ke Kulanui o La Rochelle ma Farani, a me kāna mau hoa hana ma ke Kulanui o New Caledonia ma Noumea inā hiki iā lākou ke hoʻohana i ke kaʻina hana pale cathodic, kahi ʻenehana i hoʻohana ʻia e hoʻomalu i ka corrosion o nā hale metala moana, e huki i kekahi. nickel i waho o ka wai..
Ke hoʻohana ʻia kahi au uila nāwaliwali i nā metala i loko o ka wai kai, e hoʻoheheʻe ʻia ka calcium carbonate a me ka magnesium hydroxide i waho o ka wai a puka mai nā waihona lime ma ka ʻili o ka metala.ʻAʻole i aʻo ʻia kēia kaʻina hana i mua o nā mea hoʻohaumia metala e like me ka nickel, a noʻonoʻo nā mea noiʻi inā hiki i kekahi o nā nickel ions ke precipitate.
Ua kiola ka hui i ke uwea hao hao i loko o ka bākeke wai kai hana ʻia i hui pū ʻia me ka paʻakai NiCl2 a holo i ke au uila ma laila no ʻehiku lā.I ka pau ʻana o kēia manawa pōkole, ʻike lākou he 24 pakeneka o ka nickel i loaʻa mua i paʻa i loko o nā waihona unahi.
Wahi a Jeannine he ala maʻalahi a maʻalahi kēia e hoʻopau ai i kanikela."ʻAʻole hiki iā mākou ke hoʻopau i nā pollution āpau, akā he ala kēia e kaupalena ai," wahi āna.
ʻAʻole i manaʻo ʻia nā hopena, ʻoiai ʻaʻole ka hoʻopau ʻia o ka pollution i waena o nā pahuhopu o ka papahana noiʻi kumu.ʻO ka noiʻi nui a Jeannin e kālele ana i ka hoʻomohala ʻana i nā ala e pale aku ai i ka ʻinoʻino kahakai—ʻimi ʻo ia i ka hana ʻana o nā waihona limestone i kanu ʻia i loko o kahi uwea ma ka papahele o ka moana ma ke ʻano he sima maoli, e kōkua ana i ka hoʻopaʻa ʻana i ka lepo ma lalo o nā pā a i ʻole nā ​​kahakai one.
Ua hoʻomaka ʻo Jeannin i kahi papahana ma New Caledonia e hoʻoholo inā hiki i ka mesh ke paʻa i nā mea haumia metala e kōkua i ke aʻo ʻana i ka mōʻaukala onikelahaumia ma ka pūnaewele."Akā, i ka wā i ʻike ai mākou hiki iā mākou ke hopu i ka nui o ka nickel, hoʻomaka mākou e noʻonoʻo e pili ana i nā noi ʻoihana," wahi āna.
Ua ʻōlelo ʻo Christine Orians, he loea kaiapuni ma ke Kulanui o British Columbia ma Vancouver, ʻaʻole hiki i ke ʻano ke wehe i ka nickel wale nō, akā he lehulehu o nā metala ʻē aʻe."ʻAʻole koho nui ka co-precipitation," i ʻōlelo ʻo ia iā Chemistry World."ʻAʻole maopopo iaʻu inā he kūpono ia i ka wehe ʻana i nā metala ʻona me ka ʻole e wehe i nā metala kūpono e like me ka hao."
Akā naʻe, ʻaʻole hopohopo ʻo Jeannine i ka ʻōnaehana, inā e hoʻokau ʻia ma kahi ākea nui, e hoʻonele i ka moana i nā mineral koʻikoʻi.ʻO 3% wale nō o ka calcium a me 0.4% o ka magnesium i wehe ʻia mai ka wai i ka wā o nā hoʻokolohua, a ʻōlelo ʻo ia he kiʻekiʻe ka nui o ka hao i loko o ke kai ʻaʻole e hoʻopilikia nui iā ia.
ʻO ka mea nui, ua manaʻo ʻo Jeannin e hiki ke hoʻonohonoho ʻia kēia ʻōnaehana ma nā wahi me ka nui o ka nickel runoff, e like me ke awa o Nouméa, e hōʻemi i ka nui e pau ana i ke kai.Pono ka nānā liʻiliʻi a hiki ke hoʻopili ʻia i nā kumu ikehu hou e like me nā panela lā.Hiki ke hoʻihoʻi a hana hou ʻia ka Nickel a me nā mea haumia ʻē aʻe i paʻa i ka unahi.
Ua ʻōlelo ʻo Jeannin e hana ana ʻo ia a me kāna mau hoa hana me nā ʻoihana ma Farani a me New Caledonia e hoʻomohala i kahi papahana pilote e kōkua i ka hoʻoholo inā hiki ke ʻōwili ʻia ka ʻōnaehana ma ke kālepa.
Hāʻawi ka molekala liʻiliʻi i ka hana like me ke kumu kūʻaimetalacatalysts, akā ke alo nei i nā pilikia koʻikoʻi e pili ana i kona kūpaʻa.
He $210 miliona ka haʻawina mai Moderna entrepreneur a me ka mea hoʻopukapuka ʻo Tim Springer e kākoʻo i ka noiʻi hoʻomau
© Royal Society of Chemistry document.write(new Date().getFullYear());Ka helu inoa aloha: 207890