"Kev daws teeb meem tseem ceeb" yog ib qho kev daws teeb meem tseem ceeb los tswj cov pa yas.
Kev siv ntawm cov tsis muaj degradable plastics yog txwv. Yuav siv dab tsi? Yuav ua li cas txo cov kuab paug yas? Cia cov yas depre? Ua rau nws ib puag ncig cov neeg ua phooj ywg. Tab sis, tuaj yeem biodegradable plastics tiag tiag txo cov pa phem yas? Yog tias qee qhov txuas ntxiv ntxiv rau cov yas kom nws tsis paub tseeb, thiab nws tseem nyob ntawm cov yas, puas yog qhov chaw qias neeg? Coob leej ntau tus neeg tsis ntseeg. Qee tus neeg txawm xav tias qhov no tsuas yog qhov tshiab ntawm kev lag luam kev lag luam. Yog li ntawd, muaj ntau yam tsis zoo nrog qhov tsis sib xws thiab tus nqi ntawm kev ua lag luam. Qhov no puas yog qhov zoo lossis tsis zoo? Nws puas tuaj yeem nqa lub zog tshiab ib puag ncig?
Ua ntej, cia cov nrov nrov untrasics. Degradable plastics are divided into biodegradable plastics, thermal oxidative degradation plastics, photodegradable plastics and compostable plastics. They are all “degradable”, but the cost of thermally oxidatively degradable plastics and photodegradable plastics is several times different from that of biodegradable plastics and compostable plastics. Cov pa oxygen-degradable plastics thiab lub teeb-degradable plastics tau hais rau "ploj" los ntawm lub ntiaj teb nkaus xwb tom qab raug cua sov lossis lub teeb rau ib lub sijhawm. Tab sis nws yog tus nqi qis no thiab "yooj yim mus ploj" cov khoom uas hu ua "PM2.5 ntawm cov plastics kev lag luam." Vim tias ob qhov kev ua tsis ncaj thev naus laus zis tsuas yog txwv tsis tau rau hauv cov khoom me me, tab sis tsis tuaj yeem ua rau lawv ploj. Cov lus no tsis pom hauv huab cua, av thiab dej vim lawv cov yam ntxwv me thiab lub teeb. Z yog thaum kawg inhaled los ntawm cov muaj sia.
Thaum ntxov li Lub Rau Hli 2019, Europe txwv tsis pub siv cov khoom pov tseg ntawm thermally oxidentable plastics, thiab Australia yuav theem tawm xws li hauv 2022.
Hauv Suav teb qhov twg cov "kev tsis meej pem kub taub hau" tau nyuam qhuav tshwm sim, "tseem xav yuav lub hnab yas loj" ntawm tus nqi qis dua tab sis tsis paub qhov tsis meej. Cov "kev txiav txim siab yas" muab rau 2020 txwv tsis pub siv "cov hnab yas uas tsis hais tias cov hnab yas uas tsis muaj teeb meem. Vim tias tus nqi siab ntawm biodegradable plastics, thermal oxidative plastics tseem yog tseem muaj kev xaiv hybrid Txawm hais tias cov yas no tsis tuaj yeem ua kom tiav, tsawg kawg yog ib feem ntawm PE yog ploj lawm.
Txawm li cas los xij, hauv kev ua lag luam chaotic, nws yog feem ntau nyuaj rau cov neeg siv khoom los txheeb xyuas cov qeb ntawm degradable plastics. Qhov tseeb, feem ntau cov lag luam tsis paub qhov sib txawv ntawm cov teeb meem tag nrho thiab thermally oxidally oxidally oxidally oxidally oxidaltic accadable plastics thiab bio-bied hybrid plastics. Lawv feem ntau xaiv cov neeg tseem pheej kawg, xav tias nws yog qhov tsis pom zoo tag nrho. Qhov no yog vim li cas ntau tus neeg muas zaub yuav hais tias: "Vim li cas koj tus ntsuas koj lub sijhawm ntau dua li lwm tus? Ua cov chaw tsim khoom lag luam, nws tsis yog qhov ua tau rau cov neeg siv khoom siv los ntawm daim ntawv lo qauv nrog 'tsis ruaj' ntawm cov khoom lag luam zoo li no.
Cov khoom siv hluav taws xob zoo tshaj plaws yuav tsum yog "cov ntaub ntawv biodegradable tau." Tam sim no, cov khoom siv muaj dav yog cov polylacactic acid (TA), uas yog ua los ntawm Biomaterials xws li cov hmoov txhuv nplej siab thiab pob kws. Los ntawm cov txheej txheem xws li cov av cog ntoo, nplooj lwg, thiab dej hiav txwv uas ua rau muaj cov pa roj carbon dioxide tsis ua rau ib puag ncig ntxiv rau ib puag ncig.
Hauv cov nroog uas cov "yas txiav" tau ua tiav, peb tuaj yeem pom cov hnab yas biodegradable uas ntsib tus qauv tshiab G. Hauv qab ntawm nws, koj tuaj yeem pom cov cim ntawm "PBat + Pla" thiab "JJ" lossis "taum". Tam sim no tsuas yog hom no ntawm cov khoom siv biodegradable uas ua tau raws li tus qauv yog qhov khoom siv tsis muaj txiaj ntsig zoo uas tsis muaj kev cuam tshuam rau ib puag ncig.
DINGLI ntim qhib lub hnab ntim khoom ntsuab rau koj!
Lub Sijhawm Post: Jan-07-2022