Cov Lus Tseeb Txog Cov Khoom Plig Yas Hlob

1. Dab tsi yog degradable yas?

Degradable yas yog lub tswv yim loj. Nws yog lub sijhawm thiab muaj ib lossis ntau kauj ruam nyob rau hauv ib puag ncig ib puag ncig, uas ua rau muaj kev hloov pauv hauv cov qauv hauv tshuaj lom neeg, poob ntawm qee yam khoom (xws li kev coj ncaj ncees, huab hwm huab hwm coj, qauv lossis tshuab muaj zog) thiab / lossis tawg yas.

2. Dab tsi yog biodegradable yas?

Biodegradable plastics yog cov plastics uas tuaj yeem decomposed los ntawm kev ua ntawm cov kab mob nyob, feem ntau microbes, rau hauv dej, carbon dioxide, thiab biomass. Biodegradable plastics yog cov feem ntau tsim nrog cov khoom nyoos tshiab, cov kab mob me me, petrochemicals, los yog kev sib txuas ntawm peb.

3. Dab tsi yog khoom siv biodegradable?

Cov khoom siv biodegradable suav nrog biodegradable natural polymer cov ntaub ntawv xws li cellulose, hmoov txhuv nplej siab, ntawv, thiab lwm yam, thiab ntxiv rau biodegradable plastics tau los ntawm kev siv tshuaj lom neeg los yog tshuaj lom neeg.

Biodegradable yas yog hais txog cov mineralized inorganic ntsev thiab biomass tshiab (xws li cov kab mob tuag hauv lub cev, thiab lwm yam) uas nws lub cev puas vim los ntawm kev ua haujlwm ntawm cov kab mob me me nyob rau hauv cov xwm txheej ib txwm muaj xws li av thiab / lossis xuab zeb, thiab / lossis tej yam mob xws li cov kev ua kom ua kom zom zaub mov lossis kev zom zaub mov tsis zoo lossis ua kua dej ntawm cov kua dej, uas thaum kawg yuav ua kom cov pa roj carbon dioxide (CO2) lossis / thiab methane (CH4), dej (H2O) thiab cov ntsiab lus nyob hauv.

Nws yuav tsum raug sau tseg tias txhua hom khoom siv biodegradable, suav nrog cov ntawv, yuav tsum muaj qee yam puag ncig puag ncig rau nws lub ntsej muag. Yog tias nws tsis muaj qhov ua kom degradation, tshwj xeeb tshaj yog cov kev ua neej nyob ntawm cov kab mob me me, nws txoj kev xeb yuav qeeb heev; tib lub sijhawm, tsis yog txhua yam ntawm cov khoom siv biodegradable tuaj yeem ua kom sai nyob rau hauv ib puag ncig ib puag ncig. Yog li ntawd, nws raug nquahu kom peb txiav txim siab seb cov khoom puas hloov pauv tau los ntawm kev kawm txog cov xwm txheej ib puag ncig nws thiab txheeb xyuas cov qauv ntawm cov khoom siv nws tus kheej.

4. Ntau hom sib txawv ntawm biodegradable plastics

Raws li hom khoom siv raw li cas, cov yas siv biodegradable tuaj yeem muab faib ua plaub yam. Thawj pawg yog cov yas uas tau tsim los ntawm cov khoom ntuj tsim. Nyob rau ntawm kev ua lag luam ntawm tam sim no, yas biodegradable, uas yog tsim los ntawm ntuj polymers feem ntau muaj xws li thermoplastic hmoov txhuv nplej siab, biocellulose thiab polysaccharides thiab lwm yam.; Hom ob yog cov polymer uas tau los ntawm microbial fermentation thiab tshuaj lom neeg, xws li polylactic acid (PLA), thiab lwm yam.; Qeb peb yog cov polymer, uas yog ncaj qha los ntawm cov khoom siv tsiaj ntawv, xws li polyhydroxyalkanoate (PHA), thiab lwm yam.; Qeb plaub yog lub biodegradable yas tau los ntawm kev sib txuas ua ntej cov khoom siv lossis los ntawm kev ntxiv lwm cov tshuaj synthesics.


Sijhawm Tshaj Tawm: Mar-08-2021