Kev cuam tshuam ib puag ncig ntawm Aluminium Ntau Lawm:
1.Kev Siv Hluav Taws Xob Loj: Ke tus txheej txheem thawj zaug ntau lawm (ntawm kev Hall-Hérice cov txheej txheem) yuav tsum tau cov hluav taws xob (~ 14,} kwh ib tas ntawm txhuas). Yog tias muaj hluav taws xob los ntawm cov pob txha fuels, qhov no pab txhawb kev ua haujlwm sib faib.
2.Tsev cog khoom roj emissions: Cov txheej txheem tso tawm perfluorocarbons (PFCS), muaj zog los ntawm cov roj carbon anode.
3.Bauxite Mining: Extracting Bauxite ore ua rau muaj kev rhuav tshem, av, thiab kev puas tsuaj hauv tsev, tshwj xeeb tshaj yog nyob rau hauv thaj chaw kub.
Cov av nkos liab: Refining Bauxite generates toxic "liab av" (alkaline, hnyav hlau-laden sludge), uas ntxim nyiam kev txaus ntshai thiab muaj peev xwm av muaj peev xwm ua paug. Tshaj li 1.2 billion tons yog tsim txhua xyoo.
4.Dej paug qias: Tshuaj lom neeg siv hauv kev ua tiav (piv txwv li, caustic dej qab zib) tuaj yeem lav rau hauv cov dej tshuab yog tias tsis tswj cov dej kom zoo.
Yuav ua li cas cov khoom siv rov qab ua rau cov kev cuam tshuam no:
5.ZIAB TAWM: Thawv Alumining Aluminium Siv95% tsawg zogTshaj li kev tsim khoom ua ntej (tsuas yog ~ 5% ntawm thawj lub zog), slashing emissions. Piv txwv li, rov qab siv dua ib tuj ntawm txhuas txuag ~ 12,6 {2}} kw ntawm lub zog thiab kev zam ~ 9 tons ntawm kev npaj ua ke.
6.Txo cov kev thov kev siv mining: Siv rov qab ua dua tshiab bauxi bypasses bauxite mining, khaws cia cov ecosystem thiab txo cov av degradation.
Minimal pov tseg: Kev ua haujlwm ua kom rov zoo ua tsis muaj av nkos liab lossis pfcs, easing siab ntawm cov khoom pov tseg pov tseg.
7.Kev lag luam ncig: Aluminium yogTsis lees paub qhov ua tauYam tsis muaj kev poob zoo. Thoob ntiaj teb, ~ 75% ntawm tag nrho cov txhuas puas tau ua rau siv hnub no. Cov nqi rov qab ua dua tshiab (tam sim no ~ 60% rau qhov kawg ntawm SCRAP) tuaj yeem txo cov thawj kev sib raug zoo tseem ceeb.
8.Kev txhawb zog kev lag luam: Kev ua haujlwm rov ua haujlwm raug nqi thiab ua haujlwm zoo thiab tsis raug cai los ntawm cov cai (piv txwv li, cov phiaj xwm tso nyiaj, lub luag haujlwm tsim nyog).
Cov kev sib tw & cov kev daws teeb meem:
9.Kev sau cov khoob: Tsuas yog ~ 70% ntawm txhuas ntim tau rov ua dua nyob thoob ntiaj teb. Kev tsim kho vaj tse thiab kev paub txog cov pej xeem yog qhov tseem ceeb.
Carbon-nruab nrab smelting: Kev hloov pauv smelters los txhim kho lub zog txuas dua tshiab (piv txwv li, hydropower) thiab kev txhim kho inert kev siv tshuab tuaj yeem txuas ntxiv cov khoom lag luam.
Liab mud siv: Tshawb nrhiav kom rov kho cov av nkos liab (piv txwv li, hauv caent ntau lawm lossis tsis tshua muaj zog-ntiaj teb extraction) tuaj yeem txo cov khib nyiab pov tseg.
Tag: Rov ua dua yog lub pob zeb ntawm kev lag luam ruaj khov, tab sis ua tiav qhov kev lag luam qis, kev siv cov kev pov tseg kom zoo dua qub.
