Vim li cas siv biodegradable plastics?
Yas yog cov khoom tseem ceeb. Nrog rau kev txhim kho sai ntawm kev lag luam thiab zej zog thiab qhov tshwm sim ntawm ntau yam kev lag luam tshiab xws li kev lag luam e-kev lag luam thiab kev noj khoom haus, kev noj khoom ntawm cov khoom siv yas tau nce sai.
YAS tsis tsuas yog coj kev yooj yim rau tib neeg lub neej, tab sis kuj ua rau "dawb paug", uas ua phem rau cov ecological thiab tib neeg kev noj qab haus huv.
Tuam Tshoj tau pom meej meej muab lub hom phiaj zoo nkauj rau lub Tuam Txhab Zoo Nkauj
Dab tsi yog biodegradable plastics?
Degradable plastics yog degreem uas yog degraded los ntawm kev ua ntawm cov microorganism chaw, thiab thaum kawg tsis muaj pa roj carbon dioxide (CO2) lossis / Thiab methane (ch4), dej (h2o) thiab ntxhia inorganic ntsev, nrog rau cov kab mob tshiab (xws li cov kab mob tuag, thiab lwm yam).
Dab tsi yog cov pawg ntawm cov txhab tsis taus plastics?
Raws li cov qauv kev qhia rau kev faib tawm thiab cov cim kev lag luam hauv cov av, cov dej hiav txwv, dej hiav txwv (dej ntws tshiab, cov pas dej tshiab) thiab lwm txoj chaw.
Raws li cov kev sib txawv ib puag ncig, kev ua tsis tau yooj yim uas tuaj yeem faib ua:
Cov av tsis ruaj khov, nplooj lwg kom tsis muaj plastics, cov dej tshiab ib puag ncig tsis muaj teeb meem, cov khoom siv anaerobic digestable tsis muaj teeb meem.
Dab tsi yog qhov sib txawv ntawm degradable plastics thiab zoo tib yam plastics (tsis muaj degradable)?
Cov plastics tsoos feem ntau yog ua los ntawm polystyrene, polypinylene, polyvinyl chloride thiab lwm yam kev ua haujlwm siv tshuaj polymer, uas yog qhov nyuaj los ntawm cov kab mob me me.
Nws yuav siv 200 xyoo thiab 400 xyoo rau cov plastics rau kev ua kom tsis muaj kuab paug hauv lub ntuj tsim paug los ntawm kev pov cov plasics ntawm yuav.
Biodegradable plastics yog txawv heev los ntawm kev tsoos hlau hauv cov qauv tshuaj. Lawv cov kab ke polymer muaj ntau tus qauv ester, uas tuaj yeem zom thiab siv los ntawm cov kab mob me, uas yuav tsis ua rau muaj kuab paug nyob ntev rau ib puag ncig.
Yog cov "ib puag ncig tus phooj ywg yas hauv khw biodegradable?
Raws li daim ntawv sau npe ntawm GB / T 38082-2019 "biodegradable hnab yas yuav tsum tau qhia kom meej meej" cov hnab ntim khoom ncaj qha "khoom noj khoom haus biodegradable hnab yas khoom ". Tsis muaj "ib puag ncig tus phooj ywg hnab yas" logo.
Ib puag ncig kev tiv thaiv cov hnab yas ntawm kev ua lag luam muaj ntau dua gimmicks tsim los ntawm cov lag luam hauv lub npe ntawm kev tiv thaiv ib puag ncig. Thov qhib koj lub qhov muag thiab xaiv kom zoo.
Lub Sijhawm Post: 02-12-22