Dab tsi yog qhov txawv ntawm compostable thiab biodegradable

Compostable hnab
Compostable hnab xav tau ib puag ncig composting tshwj xeeb kom decompose zoo. Qhov no feem ntau txhais tau tias qhov kub thiab txias (feem ntau yog nyob ib ncig ntawm 50-60 degrees Celsius), av noo (li 50-60%) thiab oxygen txaus. Composting chaw, txawm hais tias loj industrial composting nroj tsuag los yog hauv tsev composting bins, yog tsim los tsim cov zoo tagnrho tej yam kev mob. Nyob rau hauv ib puag ncig no, cov kab mob (xws li cov kab mob, fungi, thiab lwm yam) tuaj yeem sib ntxiv thiab ua haujlwm ntau. Piv txwv li, qee lub hnab bioplastic compostable tuaj yeem decomposed rau hauv carbon dioxide, dej thiab organic chiv hauv cov khoom siv composting tom qab ob peb lub lis piam mus rau lub hlis.

Biodegradable hnab
Biodegradable hnab muaj ntau yam ntawm decomposition ib puag ncig. Lawv tuaj yeem decompose nyob rau hauv tej yam ntuj tso xws li av, dej los yog marine ib puag ncig. Txawm li cas los xij, tus nqi decomposition tuaj yeem sib txawv heev nyob ntawm qhov chaw ib puag ncig. Piv txwv li, nyob rau hauv ib qho chaw sov, av noo nrog cov kab mob nquag, lub hnab biodegradable yuav decompose sai heev, tab sis nyob rau hauv ib qho chaw qhuav lossis txias, cov txheej txheem decomposition yuav qeeb heev. Lub hnab ua los ntawm cov nroj tsuag fibers, xws li cov uas ua los ntawm cov nroj tsuag fibers, yuav siv sij hawm los ntawm ob peb lub hlis mus rau ob peb xyoos kom decompose nyob rau hauv cov av nplua nuj nyob rau hauv cov organic teeb meem, nyob ntawm seb hom fiber thiab av tej yam kev mob.

Compostable hnab
Thaum muab tso rau hauv ib puag ncig zoo composting, lub hnab compostable feem ntau muaj peev xwm decompose nyob rau hauv lub sij hawm luv luv thiab kwv yees. Feem ntau hais lus, ib lub hnab ntim khoom zoo zoo yuav raug decomposed tag nrho nyob rau hauv 3-6 lub hlis nyob rau hauv ib tug industrial composting chaw. Qhov no yog vim hais tias lub composting ib puag ncig yog artificially tswj thiab cov kev ua ntawm microorganisms yuav nqa tawm tsis tu ncua thiab zoo.

Biodegradable hnab
Lub sij hawm decomposition ntawm biodegradable hnab yog tsis paub tseeb. Nyob rau hauv ib puag ncig zoo tagnrho, lawv tuaj yeem decompose nyob rau lub sijhawm zoo ib yam li cov hnab ntim khoom, tab sis yog tias ib puag ncig tsis zoo, xws li nyob rau hauv ib puag ncig uas tsis muaj cov kab mob los yog huab cua kub, decomposition yuav siv sij hawm ntau xyoo los yog ntau xyoo. Piv txwv li, qee lub hnab ntim khoom hluavtaws biodegradable tuaj yeem nyob ntev thiab nyuaj rau decompose nyob rau hauv qhov chaw qis qis xws li dej hiav txwv tob uas muaj cov kab mob microbial tsis muaj zog.

Compostable hnab
Thaum tag nrho decomposed, lub hnab compostable tsim cov organic chiv, carbon dioxide, thiab dej uas muaj txiaj ntsig zoo rau cov av. Cov organic chiv no tuaj yeem txhim kho cov qauv hauv av, nce av fertility thiab txhawb cov nroj tsuag kev loj hlob. Piv txwv li, lub hnab compostable ua los ntawm pob kws hmoov txhuv nplej siab thiab lwm yam khoom siv raw yuav siv tau los ua cov av zoo thiab muab cov as-ham rau cov qoob loo tom qab decomposition.

Biodegradable hnab
Cov khoom decomposition kuj yog cov khoom ntuj xws li carbon dioxide, dej thiab qee cov tshuaj inorganic, tab sis qee zaum, qee cov khoom me me lossis cov tshuaj lom neeg yuav raug tsim tawm. Tshwj xeeb, qee cov khoom siv hluavtaws biodegradable yuav tsis decompose kiag li, tawm hauv ib co me me molecular compounds uas nyuaj rau decompose ntxiv, uas tej zaum yuav muaj feem cuam tshuam rau ib puag ncig.

Compostable hnab
Muaj cov qauv ntawv pov thawj thoob ntiaj teb nruj thiab hauv tsev. Piv txwv li, nyob rau hauv cov teb chaws Europe, cov khoom uas ua tau raws li EN 13432 tus qauv tuaj yeem raug txheeb xyuas tias yog cov khoom siv compostable thiab tuaj yeem txuas nrog cov ntawv pov thawj zoo sib xws. Cov qauv no muaj cov kev cai meej meej ntawm cov txheej txheem decomposition, lub sij hawm decomposition, hnyav hlau cov ntsiab lus, thiab lwm yam ntawm cov khoom los xyuas kom meej qhov kev nyab xeeb thiab zoo ntawm cov khoom thaum lub sij hawm composting txheej txheem.

Biodegradable hnab
Kuj tseem muaj cov qauv tsim nyog, tab sis lawv kuj yog qhov nyuaj thiab tsis sib koom ua ke. Ntau lub teb chaws thiab kev lag luam yuav muaj lawv tus kheej biodegradation qauv. Piv txwv li, ASTM D6400 yog ib qho ntawm cov qauv ntawm American Society for Testing and Materials for biodegradable plastics, tab sis nws txawv ntawm cov qauv compostable. Tsis tas li ntawd, qee cov khoom yuav thov kom biodegradable, tab sis qhov tseeb yuav tsis ua raws li kev tiv thaiv ib puag ncig nruj, thiab cov neeg siv khoom yuav tsum ua tib zoo paub qhov txawv.

Compostable hnab
Feem ntau ua los ntawm cov khoom siv organic, xws li cov hmoov txhuv nplej siab (pob kws hmoov nplej, qos yaj ywm starch, thiab lwm yam), cellulose (xws li pulp) thiab qee cov khoom siv bio-based plastics. Cov ntaub ntawv no tuaj yeem muab cov pa roj carbon ntau thiab cov khoom noj rau cov kab mob hauv qhov chaw ua kom sib xyaw, yog li txhawb cov txheej txheem decomposition. Piv txwv li, lub hnab compostable ua los ntawm cov hmoov txhuv nplej siab muaj hmoov txhuv nplej siab hauv lawv cov khoom xyaw uas tuaj yeem decomposed sai sai thiab siv los ntawm cov kab mob.

Biodegradable hnab
Cov khoom muaj pes tsawg leeg yog ntau haiv neeg. Ntxiv nrog rau cov khoom siv organic, qee cov khoom siv hluavtaws tshwj xeeb kuj suav nrog. Piv txwv li, qee cov ntaub ntawv polyester biodegradable ua tiav biodegradability los ntawm kev qhia txog biodegradable chemical bonds los yog pab pawg rau hauv polyester molecular saw. Txawm hais tias cov khoom siv hluavtaws no tuaj yeem decomposed nyob rau hauv tej yam kev mob, cov txheej txheem decomposition thiab cov khoom yuav nyuaj tshaj li compostable hnab ua los ntawm cov ntshiab tej yam ntuj tso organic cov ntaub ntawv.