Puas yog biodegradable hnab tiag tiag compostable?
Taw qhia
Qhov teeb meem ntawm cov pov tseg yas tau dhau los ua kev txhawj xeeb thoob ntiaj teb nyob rau xyoo tas los no, ua rau muaj kev siv zog los nrhiav lwm txoj hauv kev zoo rau ib puag ncig. Biodegradable hnab tau txais koob meej raws li ib qho kev daws teeb meem vim lawv thov tias yog compostable. Txawm li cas los xij, muaj kev sib cav ntau ntxiv txog qhov tseeb compostability ntawm cov hnab no. Hauv tsab xov xwm no, peb yuav delve rau hauv kev tshawb fawb tom qab biodegradability thiab compostability, tshawb txog cov txiaj ntsig zoo thiab qhov tsis zoo ntawm cov hnab biodegradable.
Dab tsi yog biodegradable hnab?
Biodegradable hnab yog tsim los ntawm cov ntaub ntawv uas tuaj yeem decomposition los ntawm kev ua ntawm cov kab mob nyob. Feem ntau, cov hnab no yog tsim los siv cov khoom siv cog xws li pob kws, zaub roj, lossis lwm yam khoom siv txuas ntxiv. Tsis zoo li cov hnab yas ib txwm siv, uas siv sijhawm ntau pua xyoo los decompose, cov hnab biodegradable tau ua lag luam raws li muaj peev xwm ua kom tawg hauv ib lub sijhawm luv luv.
Biodegradability vs. Compostability
Biodegradability thiab compostability feem ntau yog siv sib hloov, tab sis lawv tsis tas yuav yog ib qho piv txwv. Biodegradability yog hais txog lub peev xwm ntawm cov khoom siv los ua kom yooj yim sib txuas nrog kev pab ntawm cov kab mob, cov kab mob, lossis lwm yam txheej txheem ntuj. Ntawm qhov tod tes, compostability tshwj xeeb txhais tau hais tias cov khoom siv tuaj yeem hloov mus rau hauv compost, hloov kho cov av nplua nuj.
Compostability yuav tsum tsis yog tsuas yog lub peev xwm rau biodegrade tab sis kuj muaj peev xwm mus undergo tshuaj decomposition nyob rau hauv ib lub sij hawm tshwj xeeb, feem ntau nyob rau hauv 90 mus rau 180 hnub. Cov txheej txheem no yuav tsum tsis txhob muaj teeb meem seem nyob rau hauv lub resulting compost thiab yuav tsum ua rau tag nrho cov zoo ntawm compost.
Nkag siab txog cov txheej txheem composting
Txhawm rau nkag siab txog cov khoom ntim ntawm cov hnab ntim biodegradable, nws yog ib qho tseem ceeb kom nkag siab cov ntsiab lus ntawm cov txheej txheem composting. Composting yog cov txheej txheem tswj kev decomposition uas tso siab rau qhov sib npaug ntawm cov organic pov tseg, noo noo, oxygen, thiab kub. Cov kab mob xws li cov kab mob thiab cov kab mob ua rau cov khoom siv organic ua kom ruaj khov thiab siv tau, uas tuaj yeem muab ntxiv rau hauv av txhawm rau txhim kho nws cov qoob loo.
Cov yam tseem ceeb uas cuam tshuam rau kev ua tiav tiav yog qhov kub thiab txias, noo noo, muaj oxygen, thiab carbon-to-nitrogen (C / N) piv ntawm cov ntaub ntawv compostable. Ua kom tiav cov xwm txheej zoo tshaj plaws rau kev sib xyaw ua ke yog qhov tseem ceeb los xyuas kom meej tias cov decomposition muaj txiaj ntsig zoo thiab tsim cov khoom siv zoo tshaj plaws.
Cov qauv ntawv pov thawj rau cov hnab ntim compostable
Txhawm rau txiav txim siab txog compostability ntawm biodegradable hnab, ntau yam ntawv pov thawj tau tsim. Ib qho kev lees paub dav dav tshaj plaws yog ASTM D6400, uas qhia meej txog cov kev cai rau cov yas compostable. Cov txheej txheem no qhia txog cov txheej txheem rau cov ntaub ntawv uas yuav tsum tau sau ua compostable, nrog rau kev tawg, biodegradability, tsis muaj tshuaj lom residue, thiab cuam tshuam rau tag nrho cov compost zoo.
Lwm daim ntawv pov thawj uas nquag siv yog European tus qauv EN 13432, uas teeb tsa cov qauv zoo sib xws rau ntim rov qab los ntawm kev sib xyaw thiab biodegradation. Cov qauv ntawv pov thawj no ua kom ntseeg tau tias cov hnab ntim khoom tau ua tau raws li cov qauv tshwj xeeb thiab tuaj yeem siv tau zoo hauv cov tshuab ua kom tsis muaj teebmeem.
Controversies nyob ib ncig ntawm lub hnab biodegradable
Txawm hais tias muaj cov qauv ntawv pov thawj, muaj kev tsis sib haum xeeb nyob ib puag ncig cov ntaub ntawv compostability ntawm biodegradable hnab. Ib qho kev txhawj xeeb tseem ceeb yog qhov tsis muaj cov kev cai sib xws thiab cov qauv thoob plaws cheeb tsam sib txawv. Qhov kev tsis sib haum xeeb no tuaj yeem ua rau cov ntawv sau tsis raug thiab cov lus tsis tseeb txog kev sib xyaw ntawm qee lub hnab.
Lwm qhov kev tsis sib haum xeeb tshwm sim los ntawm qhov tseeb tias cov hnab ntim biodegradable feem ntau xav tau cov xwm txheej tshwj xeeb kom tawg tau zoo. Qee lub hnab yuav tsuas yog decompose nyob rau hauv cov chaw ua liaj ua teb, qhov chaw uas qhov kub thiab txias, noo noo, thiab microbial kev ua haujlwm tuaj yeem tswj tau. Qhov kev txwv no ua rau muaj lus nug txog kev ua tau zoo thiab kev siv tau ntawm cov hnab ntim biodegradable hauv tsev compost.
Tsis tas li ntawd, cov kev tshawb fawb tau pom tias qee lub hnab biodegradable tsuas tuaj yeem ua rau qee qhov tawg, tawm hauv cov khoom siv microplastic uas tuaj yeem ua rau muaj kuab paug ib puag ncig. Qhov no qhia txog qhov tseem ceeb ntawm kev nkag siab txog kev cuam tshuam ib puag ncig mus sij hawm ntev ntawm cov hnab biodegradable tshaj li lawv cov decomposition tam sim.
Cov txiaj ntsig ntawm biodegradable hnab
Txawm hais tias muaj kev sib cav, lub hnab biodegradable muaj ntau yam txiaj ntsig zoo dua li cov hnab yas ib txwm muaj. Lawv txo qhov cuam tshuam ib puag ncig, tshwj xeeb tshaj yog nyob rau hauv cov nqe lus ntawm kev txo qis kev cia siab rau cov peev txheej fossil roj nplua nuj, yog ib qho txiaj ntsig tseem ceeb. Tsis tas li ntawd, kev siv cov khoom siv txuas ntxiv dua tshiab hauv cov hnab biodegradable tuaj yeem pab txo qis cov pa roj carbon monoxide emissions cuam tshuam nrog kev tsim cov khoom siv niaj hnub.
Tsis tas li ntawd, lub hnab compostable muaj peev xwm hloov tau cov organic pov tseg los ntawm qhov chaw pov tseg mus rau hauv cov chaw composting, pab txhawb kev lag luam ncig. Los ntawm kev hloov cov organic pov tseg rau hauv compost, cov hnab no tuaj yeem pab rov tsim cov av thiab txo cov kev xav tau ntawm cov tshuaj chiv, txhawb kev ua liaj ua teb kom ruaj khov.
Txhawb kev kawm txog cov neeg siv khoom thiab kev siv cov khoom siv rov ua dua tshiab
Txhawm rau kom siv tau zoo thiab pov tseg cov hnab biodegradable, yuav tsum muaj kev kawm dav dav rau cov neeg siv khoom thiab txhim kho cov khoom siv rov ua dua tshiab. Kev cob qhia cov neeg siv khoom txog kev siv thiab kev pov tseg ntawm cov hnab ntim biodegradable tuaj yeem txhim kho lawv txoj kev nkag siab thiab txhawb nqa lub luag haujlwm tswj kev coj ua.
Nyob rau tib lub sijhawm, tsim cov khoom tsim nyog rov ua dua tshiab thiab cov khoom siv composting yog qhov tsim nyog los ua kom haum rau cov kev xav tau tshwj xeeb decomposition ntawm biodegradable hnab. Qhov no suav nrog kev nthuav dav nkag mus rau cov chaw ua liaj ua teb hauv kev lag luam thiab txhawb kev tsim cov tshuab ua kom zoo hauv tsev.
Xaus
Thaum lub hnab biodegradable tuaj yeem nthuav tawm cov lus cog tseg rau kev txo cov pov tseg yas, lawv cov ntaub ntawv pov thawj compostability yuav tsum tau ua tib zoo soj ntsuam. Nkag siab qhov sib txawv ntawm biodegradability thiab compostability, nrog rau cov xwm txheej tshwj xeeb uas yuav tsum tau muaj rau kev decomposition, yog qhov tseem ceeb hauv kev ntsuam xyuas ib puag ncig ntawm cov hnab no.
Cov qauv ntawv pov thawj muab lub hauv paus tseem ceeb rau kev txiav txim siab compostability, tab sis xav tau kev siv zog ntxiv los ua kom muaj kev sib luag thoob plaws cheeb tsam. Tsis tas li ntawd, hais txog kev tsis sib haum xeeb thiab txhim kho kev kawm txog cov neeg siv khoom thiab cov khoom siv rov ua dua tshiab yuav ua lub luag haujlwm tseem ceeb hauv kev ua kom muaj txiaj ntsig zoo ntawm cov hnab ntim biodegradable.
Los ntawm kev siv cov kev paub txog kev tshawb fawb thiab siv cov kev coj ua kom ruaj khov, peb tuaj yeem txav los ze dua rau yav tom ntej uas cov khib nyiab yas txo qis, thiab peb ib puag ncig tiv thaiv zoo dua.