Qhov sib txawv ntawm cov pob kws cov khoom siv pov tseg thiab PLA cov zaub mov tsis zoo

Cov khoom tseem ceeb ntawm cov pob kws cov hmoov txhuv nplej siab pov tseg yog cov hmoov txhuv nplej siab PP sib xyaw nrog cov hmoov txhuv nplej siab ntau dua 45%. Cov qauv siv hluav taws xob muaj qhov zoo ntawm tus nqi qis, tsis muaj kev cuam tshuam rau lub zog thiab lub zog ntawm cov khoom siv niaj hnub, ua raws li cov qauv kev nyab xeeb khoom noj tam sim no, txo qis carbon emissions thiab txuag cov khoom siv roj.

Vim cov hmoov txhuv nplej siab yog ib qho kev hloov kho lub cev, nws tuaj yeem ua rau mildew nyob rau hauv qhov chaw ntub dej, yog li cov khoom siv ntawm cov hmoov txhuv nplej siab feem ntau yog siv rau hauv cov khoom siv pov tseg, xws li cov tais diav pov tseg, cov yeeb yaj kiab tshiab, cov hnab khib nyiab, thiab lwm yam.

Raws li kev kho incineration muaj kev txhawj xeeb, cov ntaub ntawv biomass xws li cov hmoov txhuv nplej siab tau muab los ntawm cov nroj tsuag, yog li kev siv cov khoom siv biomass tuaj yeem txo qhov cuam tshuam ntawm CO2 ntawm huab cua emissions. Yog li ntawd, thaum cov khoom muaj nws cov kev ua tau zoo, nce cov ntsiab lus ntawm cov roj ntsha hauv paus yuav muaj kev cuam tshuam rau ib puag ncig thiab tsawg dua kev vam khom rau cov khoom siv tsis yog. Txawm li cas los xij, nws yog ib qho kev xav txog kev cuam tshuam ib puag ncig nkaus xwb los ntawm txoj kev kho mob. Nws yog ib qho tsim nyog yuav tsum xav txog kev siv dej thiab hluav taws xob los yog kev ua qias tuaj ib puag ncig los ntawm cov khoom siv raw thiab cov khoom, thiaj li txiav txim siab tag nrho cov superiority ntawm ib yam khoom.

Los ntawm qhov kev xav ntawm kev tiv thaiv ib puag ncig thiab kev txuag cov peev txheej tsis txuas ntxiv, peb yuav tsum ntsuas tag nrho lub neej voj voog, uas yog, los ntawm cov khoom siv raw mus rau cov khoom, pov tseg tom qab siv cov khoom. Raws li kev siv cov peev txheej, cov peev txheej petrochemical feem ntau yog siv los ntawm cov khoom siv raw thiab kev siv hluav taws xob. Hais txog ib puag ncig, cov khoom siv fossil siv hluav taws xob, tsev cog khoom roj xws li CO2 los ntawm kev siv tshuaj tua hluav taws, thiab cov dej pov tseg.

Cov khoom siv bio-based, kev siv peev txheej, nws cov khoom siv raw yog cov hmoov txhuv nplej siab, kev siv cov nplej siab, cov txheej txheem yooj yim, yog li tus nqi kuj muaj txiaj ntsig zoo. Piv nrog cov khoom siv roj av ib txwm muaj, cov khoom siv petrochemical tuaj yeem khaws cia rau qee yam. Nyob rau hauv nam ntawm ib puag ncig, cov txheej txheem pov tseg tseem ceeb yog kev sib cais, rov qab cov roj av-raws li plastics thiab composting ntawm cov hmoov txhuv nplej siab, uas tsis tshua muaj kev cuam tshuam rau ib puag ncig. Tab sis nyob rau hauv kev muaj tiag, feem ntau ntawm lawv yog landfill los yog incineration. Lub ntsiab pa phem los ntawm incineration yog qhov ntxiv CO2 generated los ntawm roj av-raws li Cheebtsam, uas yuav rov qab tau los ntawm lub zog. Yog hais tias txoj kev kho mob yog pov tseg, lub cev lub cev ntawm tag nrho cov khoom yuav vau vim biodegradation ntawm starch, tab sis cov seem ntawm PP tom qab no "collapse" yuav nyob twj ywm nyob rau hauv cov av thiab nyob rau hauv qhov chaw ntawm lub sij hawm ntev.

Raws li cov ntaub ntawv pov tseg pov tseg yog kev txhawj xeeb, vim tias Suav cov zaub mov muaj roj ntau thiab ua rau lub caij nyoog, thiab cov tais diav uas siv tau pov tseg yog kab mob los ntawm cov zaub mov seem, nws nyuaj rau rov ua dua lossis tsis muaj nqi rov ua dua. Cov zaub mov composting muaj txiaj ntsig zoo rau cov av. Yog li, qhov kev kho mob tiag tiag feem ntau yog qhov chaw pov tseg thiab incineration. Noj incineration ua piv txwv, piv nrog rau ob cov ntaub ntawv saum toj no, PLA muaj qhov zoo ntawm kev txuag cov khoom siv petrochemical feem ntau thiab txo qis CO2 emissions rau ib puag ncig, tab sis nws qhov tsis zoo yog tus nqi siab thiab pov tseg ntawm cov nplej. Pob kws hmoov txhuv nplej siab muaj qhov zoo ntawm tus nqi qis, ib feem ntawm kev txuag ntawm petrochemical kev pab thiab tsawg dua CO2 tsev xog paj emissions rau cov cua. Qhov tsis zoo yog tias cov khoom siv roj av tseem ua rau qee qhov ua paug rau ib puag ncig. Kev siv pov tseg ua piv txwv, PLA muaj qhov zoo ntawm kev txuag cov khoom siv petrochemical feem ntau, tab sis nws qhov tsis zoo yog tus nqi siab, nkim khoom noj, tsis yooj yim rau degrade, thiab tseem tsis tuaj yeem daws qhov teeb meem ntawm kev ua haujlwm ntev. Pob kws hmoov txhuv nplej siab muaj qhov zoo ntawm kev txuag ib feem ntawm cov khoom siv petrochemical, qee qhov tawg thiab degraded, tsis muaj av ua haujlwm thiab tus nqi qis. Qhov tsis zoo yog tias cov khoom siv roj av tseem ua rau muaj chaw nyob rau ib puag ncig.