Qhov tshwm sim ntawm COVID-19 tau ua rau muaj kev siv cov cuab yeej tiv thaiv tus kheej kho mob, ntim khoom noj, thiab khoom noj khoom haus xa hauv tsev, ua rau cov khoom pov tseg ntau dua (1, 2). Kev siv cov tswv yim tswj tsis tsim nyog xws li hauv zos bumming, incineration, thiab av filling kuj tau nce ntxiv, ua rau cov khoom pov tseg ntawm cov yas pov tseg rau hauv ib puag ncig thiab cuam tshuam kev txo qis ntawm micro thiab nanoplastics (3). Kwv yees li 6% ntawm lub ntiaj teb cov roj tsim txhua xyoo yog mob siab rau cov yas, thiab 850 lab metric tons ntawm cov pa roj carbon monoxide tau cuam tshuam nrog cov khoom siv tshiab thiab kev tsim cov yas pov tseg hauv xyoo 2019, uas yog sib npaug rau txhua xyoo emissions los ntawm 189 500-megawatt thee-fired fais fab nroj tsuag (4, 5). Nyob rau hauv lub ntsej muag ntawm cov kev cov nyom no, nws yog ib qho tsim nyog los tsim cov tswv yim los siv cov khoom pov tseg pov tseg kom ruaj khov.
Qee lub tebchaws thiab cheeb tsam tsoomfwv tau nqis tes ua rau lub hom phiaj no. Cov European Commission tau cim cov yas rov ua dua tshiab raws li qhov tseem ceeb tshaj plaws rau Txoj Kev Npaj Ua Lag Luam Circular Economy Action Plan tshiab thiab tab tom npaj los qhia ntau yam ntawm cov quotas rau yam tsawg kawg nkaus siv cov ntsiab lus hauv cov khoom yas tshiab (6). Qee lub xeev hauv Tebchaws Meskas tau tshaj tawm cov ntsiab lus tsawg kawg uas yuav tsum tau siv los ua kom tiav cov pa phem. Piv txwv li, Kalifonias tau xav kom cov thawv yas thermoform kom tsis pub tsawg dua 20% lossis 30% (nyob ntawm tus nqi rov ua dua) tom qab cov neeg siv khoom siv yas rov qab los ntawm 2030 (7). Cov kev siv zog no yuav pab txo cov pa phem.
Kev sib koom tes thoob ntiaj teb kuj xav tau. Thaum Lub Rau Hli, ib pab pawg neeg ua haujlwm hauv tebchaws United Nations Environmental Assembly tau pib npaj rau kev tsim cov cuab yeej thoob ntiaj teb kev cai lij choj, uas 175 lub tebchaws tau cog lus tias yuav ua kom tiav thaum kawg ntawm 2024, kom txav deb ntawm cov yas siv ib zaug thiab xyuas kom muaj kev ua tiav ntawm UN Sustainable. Lub Hom Phiaj Txhim Kho (8). Txoj kev cog lus yuav tsum suav nrog cov qauv kev coj ua rov ua dua tshiab thiab xav tau cov lus cog tseg los siv lawv.
Kev sib koom ua ke kev tsim kho yuav tsum ua haujlwm rau cov thev naus laus zis uas tuaj yeem rov ua cov khoom pov tseg pov tseg [piv txwv li, (9, 10)]. Tsim cov txheej txheem catalytic kom rov qab tau cov yas monomers lossis cov khoom muaj txiaj ntsig alkane los ntawm cov yas pov tseg tuaj yeem ua rau kaw lub voj siv yas thiab nqa ceg tshiab thiab muaj txiaj ntsig rau kev lag luam yas rov ua dua tshiab (11, 12). Kev sib koom ua ke los rov ua dua cov pov tseg yas tuaj yeem ua rau muaj txiaj ntsig zoo rau kev ua tiav kev lag luam nrog net-zero greenhouse gas emissions los ntawm 2050 thiab txwv lub ntiaj teb ua kom sov kom tsawg dua 1.5 degree los ntawm 2100.
Leilei Dai1, Roger Rau1*, Siming Koj2, Hanwu Li3
1University of Minnesota, Saint Paul, MN 55108, USA.
2University of Glasgow, Glasgow, UK.
3Washington State University, Richland, WA99354, Tebchaws USA.
*Tus sau sau. Email: ruanx001@umn.edu
CEEB TOOM thiab sau ntawv
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https:/leginfo.Jegislature.ca.gov/taoes/bilNavCient.xhtml?bilid=202120220AB478
8. United Nations Environment Assembly, "Ad hoc Open-ended Working Group to Prepare for the Intergovernmental Negotiating Committee to End Plastic Pollution" (2022), https://enbiisd.org/working group intergovernmental negotiating committee end-plastic pollution oewg- inc cov ntsiab lus.
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