1.Biodegradation hnab, Biodegradation hnab yog lub hnab muaj peev xwm decomposed los ntawm cov kab mob los yog lwm yam kab mob.Hais txog 500 billion mus rau 1 trillion hnab yas siv txhua txhua xyoo.Biodegradation hnab yog cov hnab uas muaj peev xwm decomposed los ntawm cov kab mob los yog lwm yam kab mob.Hais txog 500 billion mus rau 1 trillion hnab yas siv txhua xyoo.
2.Qhov txawv ntawm "biodegradable" thiab "compostable"
Nyob rau hauv cov ntsiab lus raug, lo lus biodegradable muaj lub ntsiab lus txawv dua li compost.Biodegradable tsuas yog txhais tau hais tias cov khoom tuaj yeem decomposed los ntawm cov kab mob los yog lwm yam kab mob, thiab "compost" nyob rau hauv cov yas kev lag luam yog txhais raws li lub peev xwm mus decompose nyob rau hauv ib tug aerobic ib puag ncig tswj ntawm tej. Kev tswj kub thiab av noo.Compospost yog lub peev xwm los biodecompose nyob rau hauv ib lub compost teb, ua cov ntaub ntawv visually indistinguishable thiab decomposed rau carbon dioxide, dej, inorganic tebchaw thiab biomass ntawm tus nqi raws li zoo raws li
Kev suav nrog "inorganic khoom" tsis suav nrog cov khoom kawg los ntawm kev suav tias yog compost lossis humus, uas yog cov khoom siv organic nkaus xwb. Qhov tseeb, xxx tus qauv xav tau rau cov yas hu ua compost raws li ASTM txhais yog tias nws yuav tsum ploj mus tib yam. tus nqi raws li lwm yam uas ib tug twb paub rau compost raws li ib txwm txhais.Cov hnab yas tuaj yeem ua los ntawm cov yas uas muaj ntau yam polymer (piv txwv li, polyethylene) lossis polypropylene thiab sib xyaw nrog cov khoom ntxiv uas ua rau polymer (polyethylene) degradation thiab tom qab ntawd biodegradable vim.
3.Material rau lub hnab biodegradable
muaj zog li khoom thiab txhim khu kev qha raws li ib txwm (tsuas yog polyethylene) hnab.Ntau lub hnab kuj yog ua los ntawm cov ntawv, cov ntaub ntawv organic, los yog polyhexanolactone."Cov pej xeem pom biodegradable yog ib yam khoom muaj yees," txawm hais tias lo lus tau siv dav, raws li RamaniNarayan, tus kws tshaj lij tshuaj lom neeg ntawm East Lansing Michigan State University thiab tus kws pab tswv yim ntawm lub koom haum rau Biodegradable Plastics. "Qhov no yog tam sim no feem ntau siv. thiab siv lo lus yuam kev hauv peb phau ntawv txhais lus.Nyob rau hauv Greater Pacific Waste Area, biodegradable yas lov mus rau hauv me me daim uas yuav yooj yim dua nkag mus rau cov khoom noj saw los ntawm kev noj.
4.Recycling ntawm lub hnab biodegradable.
Cov pov tseg hauv cov nroj tsuag feem ntau tuaj yeem rov ua dua tshiab, tab sis nws yog qhov nyuaj rau kev txheeb xyuas thiab rov ua dua tom qab noj.Bio-based polymers tuaj yeem ua paug rov ua dua ntawm lwm cov polymers ntau dua.While manufacturers ntawm aerobic biodegradable plastics thov hais tias lawv lub hnab yog recyclable, ntau yas zaj duab xis Cov neeg siv khoom siv rov ua dua tshiab yuav tsis lees txais lawv vim tias tsis muaj kev tshawb fawb mus ntev txog qhov ua tau ntawm cov khoom siv rov ua dua tshiab uas muaj cov khoom siv ntxiv no. Ntxiv rau, lub koom haum rau Biodegradable Plastics (BPI) tau hais tias cov formulations ntawm additives hauv oxidized films sib txawv, uas qhia ntau variability. nyob rau hauv cov txheej txheem recycling.
Post lub sij hawm: Jun-15-2022