Yas yog undeniably ib qho ntawm feem ntau cov khoom nyob rau hauv lub neej niaj hnub, vim nws ruaj khov lub cev thiab tshuaj.Nws pom cov ntawv thov dav hauv ntim khoom, khoom noj khoom haus, khoom siv hauv tsev, kev ua liaj ua teb, thiab ntau yam kev lag luam.
Thaum taug qab cov keeb kwm ntawm cov yas evolution, hnab yas ua lub luag haujlwm tseem ceeb.Xyoo 1965, lub tuam txhab Swedish Celloplast patented thiab qhia cov hnab yas polyethylene rau kev ua lag luam, sai sai tau muaj koob meej hauv Tebchaws Europe thiab hloov cov hnab ntawv thiab ntaub.
Raws li cov ntaub ntawv los ntawm United Nations Environment Programme, nyob rau hauv ib ncua ntawm tsawg tshaj li 15 xyoo, los ntawm 1979, lub hnab yas tau ntes tau ib tug impressive 80% ntawm cov European bagging ua lag luam feem.Tom qab ntawd, lawv tau lees paub tias muaj kev tswj hwm thoob ntiaj teb cov hnab ntim khoom lag luam.Thaum kawg ntawm 2020, lub ntiaj teb no tus nqi lag luam ntawm cov hnab yas tau tshaj $ 300 nphom, raws li qhia los ntawm Grand View Research cov ntaub ntawv.
Txawm li cas los xij, nrog rau kev siv cov hnab yas thoob plaws, kev txhawj xeeb ib puag ncig tau pib tshwm sim loj.Xyoo 1997, Pacific Khib Nyiab Patch tau pom, feem ntau muaj cov pov tseg yas pov tseg rau hauv dej hiav txwv, suav nrog lub hwj yas thiab hnab.
Raws li kev lag luam tus nqi $ 300 nphom, cov khoom khaws cia ntawm cov khib nyiab yas hauv dej hiav txwv tau sawv ntawm 150 lab tons los ntawm qhov kawg ntawm 2020, thiab yuav nce 11 lab tons hauv ib xyoos tom qab ntawd.
Txawm li cas los xij, cov khoom siv niaj hnub, vim lawv siv dav thiab muaj txiaj ntsig zoo rau lub cev thiab tshuaj lom neeg rau ntau daim ntawv thov, ua ke nrog cov peev txheej tsim khoom thiab cov nqi zoo, ua pov thawj nyuaj los hloov tau yooj yim.
Yog li ntawd, cov hnab yas biodegradable muaj cov khoom tseem ceeb ntawm lub cev thiab tshuaj lom neeg zoo ib yam li cov yas yas, tso cai rau lawv daim ntawv thov hauv cov khoom siv yas uas twb muaj lawm.Ntxiv mus, lawv degrade sai nyob rau hauv tej yam ntuj tso, txo cov pa phem.Yog li ntawd, cov hnab yas biodegradable tuaj yeem suav hais tias yog qhov kev daws teeb meem zoo tshaj plaws tam sim no.
Txawm li cas los xij, kev hloov pauv ntawm cov qub mus rau tshiab feem ntau yog ib qho txheej txheem zoo kawg nkaus, tshwj xeeb tshaj yog thaum nws cuam tshuam txog kev hloov cov khoom qub qub, uas muaj ntau yam kev lag luam.Cov neeg lag luam uas tsis paub txog kev ua lag luam no tuaj yeem ua rau muaj kev tsis ntseeg txog qhov ua tau ntawm biodegradable plastics.
Qhov tshwm sim thiab kev txhim kho ntawm lub tswv yim tiv thaiv ib puag ncig yog los ntawm qhov xav tau los daws thiab txo cov pa phem ib puag ncig.Cov kev lag luam loj tau pib tuav lub tswv yim ntawm ib puag ncig kev ruaj ntseg, thiab kev lag luam hnab yas tsis muaj qhov tshwj xeeb.
Post lub sij hawm: Jun-28-2023
