Kwale nkqubo inye eyenza ukuba amakhrust akhe ngaphakathi kweetipothi inokunceda ukucacanickelukungcoliseka kwamanzi olwandle, ngokophando olutsha olwenziwa kwisiqithi esikuMzantsi Pasifiki eNew Caledonia.
Ukumbiwa kwe-nickel lolona shishino luphambili lwaseNew Caledonia, kwaye isiqithi esincinci sesinye sezona mveliso zikhulu zentsimbi emhlabeni.Kodwa indibaniselwano yeekwari ezinkulu kunye nemvula enkulu ithetha ukuba izixa ezikhulu zenickel, kunye nelothe kunye nezinye iintsimbi, ziphelela emanzini ajikeleze isiqithi.Ungcoliseko lwe-nickel lunokuba yingozi kwimpilo yabantu njengoko ukugxininiswa kwayo kwintlanzi kunye ne-shellfish kunyuka njengoko benyuka ikhonkco lokutya.
UMarc Jeannin, injineli yokusingqongileyo kwiYunivesithi yaseLa Rochelle eFransi, kunye noogxa bakhe kwiYunivesithi yaseNew Caledonia eNoumea babezibuza enoba babenokusebenzisa inkqubo yokukhusela icathodic, ubugcisa obusetyenziselwa ukulawula ukugqwala kwezakhiwo zesinyithi zaselwandle, ukuze batsale ezinye. nickel ngaphandle kwamanzi..
Xa umbane ongenamandla usetyenziswa kwiintsimbi ezisemanzini olwandle, kubangela ukuba i-calcium carbonate kunye ne-magnesium hydroxide iphume emanzini kwaye idiphozithi yekalika yenzekile kumphezulu wesinyithi.Le nkqubo ayizange ifundwe phambi kweengcoliseko zetsimbi ezifana ne-nickel, kwaye abaphandi bazibuza ukuba ezinye ze-nickel ions zinokunyuka.
Iqela lajula ucingo lwentsimbi ebhekileni lamanzi olwandle enziweyo axutywe netyuwa ye-NiCl2 laza lasebenzisa umsinga wombane ongephi ngalo kangangeentsuku ezisixhenxe.Ekupheleni kweli xesha lifutshane, bafumanise ukuba ukuya kuthi ga kwi-24 pesenti ye-nickel eyayikho ekuqaleni yayivaleleke kwidiphozithi yesikali.
UJeannine uthi le ingayindlela engabizi kwaye kulula ukuyisusanickel.“Asinakuluphelisa lonke ungcoliseko, kodwa le inokuba yindlela yokulunciphisa,” utshilo.
Iziphumo bezingalindelekanga ngandlel’ ithile, ekubeni ukupheliswa kongcoliseko kwakungekho phakathi kweenjongo zenkqubo yokuqala yophando.Uphando oluphambili lukaJeannin lujolise ekuphuhliseni iindlela zokulwa nokukhukuliseka konxweme-uhlola indlela idiphozithi ye-limestone engcwatywe kumnatha wocingo kumgangatho wolwandle inokusebenza njengesamente yendalo, inceda ukuzinzisa intlenga phantsi kwamadama okanye kumanxweme anesanti.
UJeannin waqala iprojekthi eNew Caledonia ukufumanisa ukuba i-mesh inokubamba ungcoliseko olwaneleyo lwentsimbi ukunceda ukufunda imbalinickelungcoliseko kwindawo.Ukhumbula oku: “Kodwa sathi sakufumanisa ukuba sinokubamba izixa ezikhulu zenickel, saqalisa ukucinga ngezinto esinokuzisebenzisa kwimizi-mveliso.
UChristine Orian, usokhemisti wokusingqongileyo kwiYunivesithi yaseBritish Columbia eVancouver, uthi le ndlela inokususa i-nickel kuphela, kodwa inkitha yezinye iintsimbi ngokunjalo.“Imvula edibeneyo ayikhethi kakhulu,” uxelele iChemistry World.Andazi ukuba iya kusebenza na ekususeni iintsimbi ezinetyhefu ngokwaneleyo ngaphandle kokususa iintsimbi ezinokuba luncedo njengentsimbi.
Nangona kunjalo, uJeannine akanaxhala lokuba le nkqubo, ukuba isetyenziswe ngomlinganiselo omkhulu, iya kuhlutha iilwandle iiminerali ezibalulekileyo.Kuphela i-3% ye-calcium kunye ne-0.4% ye-magnesium isusiwe emanzini ngexesha lovavanyo, kwaye uthi umxholo we-iron elwandle uphezulu ngokwaneleyo ukuba ungawuchaphazeli kakhulu.
Ngokukodwa, uJeannin wacebisa ukuba inkqubo enjalo inokubekwa kwiindawo ezinenickel ebaleka kakhulu, njengezibuko laseNouméa, ukunciphisa isixa esiphelela elwandle.Ifuna ukubeka esweni okuncinci kwaye inokuqhagamshelwa kwimithombo yamandla ehlaziyekayo efana neepaneli zelanga.I-Nickel kunye nezinye izingcolisi ezibanjelwe kwisikali zinokufunyanwa kwaye zisetyenziswe kwakhona.
UJeannin uthe yena kunye noogxa bakhe basebenzisana neenkampani zaseFrance naseNew Caledonia ukuphuhlisa iprojekthi yokulinga ukunceda ekuboneni ukuba le nkqubo inokuqaliswa kurhwebo.
I-molecule engabizi inika ukusebenza okufanayo kwixabiso elikhoyointsimbiI-catalysts, kodwa ijongene neengxaki ezinzulu malunga nokuzinza kwayo.
I-210 yezigidi zeedola ezivela kuSomashishini kunye nomtyali-mali uTim Springer ukuxhasa uphando oluqhubekayo
© Umbutho wasebukhosini weChemistry document.bhala(uMhla omtsha().getFullYear());Inombolo yobhaliso yesisa: 207890