Tshawb nrhiav kev daws teeb meem: Biodegradable lossis Recyclable Plastics?

Plastic pollution ua rau muaj kev hem thawj rau peb ib puag ncig, nrog ntau dua 9 billion tons ntawm cov yas tsim txij li xyoo 1950, thiab staggering 8.3 lab tons xaus rau hauv peb cov dej hiav txwv txhua xyoo.Txawm hais tias kev siv zog thoob ntiaj teb, tsuas yog 9% ntawm cov yas tau rov ua dua tshiab, ua rau feem ntau ua rau peb cov ecosystems tsis zoo lossis nyob hauv qhov chaw pov tseg rau ntau pua xyoo.

Ib qho tseem ceeb ntawm kev txhawb nqa rau qhov kev kub ntxhov no yog qhov nthuav dav ntawm cov khoom siv yas ib zaug xws li hnab yas.Cov hnab no, siv rau qhov nruab nrab ntawm 12 feeb xwb, ua rau peb cia siab rau cov khoom siv pov tseg.Lawv cov txheej txheem decomposition tuaj yeem siv sijhawm ntau dua 500 xyoo, tso cov microplastics tsis zoo rau hauv ib puag ncig.

Txawm li cas los xij, nyob rau hauv cov kev cov nyom no, biodegradable plastics muab cov kev daws teeb meem zoo.Ua los ntawm 20% lossis ntau dua cov ntaub ntawv txuas mus ntxiv, bio-plastics muab lub sijhawm los txo peb cov kev cia siab ntawm cov fossil fuels thiab txo peb cov pa roj carbon monoxide.PLA, muab los ntawm cov nroj tsuag xws li pob kws hmoov txhuv nplej siab, thiab PHA, tsim los ntawm cov kab mob, yog ob hom bio-plastics uas muaj ntau yam kev siv.

Thaum biodegradable plastics nthuav tawm lwm txoj hauv kev hauv eco, nws yog ib qho tseem ceeb los xav txog lawv cov kev mob tshwm sim.Kev ua tshuaj lom neeg thiab kev ua liaj ua teb cuam tshuam nrog kev tsim khoom bioplastic tuaj yeem ua rau muaj kuab paug thiab teeb meem siv av.Tsis tas li ntawd, cov txheej txheem pov tseg kom raug rau bio-plastics tseem txwv, qhia txog qhov xav tau rau cov tswv yim tswj kev pov tseg.

Ntawm qhov tod tes, cov yas rov ua dua tshiab muab cov kev daws teeb meem uas muaj pov thawj ua tau zoo.Los ntawm kev txhawb nqa rov ua dua tshiab thiab nqis peev hauv kev tsim kho vaj tse los txhawb nws, peb tuaj yeem hloov pauv cov pov tseg yas los ntawm qhov chaw pov tseg thiab txo peb cov kev cuam tshuam ib puag ncig.Thaum biodegradable plastics qhia cov lus cog tseg, kev hloov pauv mus rau kev lag luam ncig, qhov twg cov khoom siv rov qab siv dua thiab rov ua dua tshiab, tuaj yeem muab cov kev daws teeb meem ntev dua rau cov teeb meem ntawm cov yas yas.