Lub txee lub neej ntawm biodegradable thiab tag nrho biodegradable hnab yas sib txawv, feem ntau nyob ntawm seb cov khoom siv biodegradable siv, ib puag ncig, thiab cov txheej txheem degradation ua haujlwm. Ntawm no yog lub neej txee dav dav thiab muaj feem cuam tshuam ntawm ob hom hnab yas no:
1. Biodegradable hnab yas
Khoom siv: Biodegradable hnab yas feem ntau yog ua los ntawm polylactic acid (PLA), polyethylene terephthalate (PBAT), starch-based plastics, lossis lwm yam khoom siv bio-based xws li polyhydroxyalkanoates (PHA). Cov ntaub ntawv no tuaj yeem maj mam degrade hauv ib puag ncig ntuj, tab sis tus nqi degradation yuav cuam tshuam los ntawm ib puag ncig yam xws li kub, av noo, thiab lub teeb.
Lub neej txee:
Txee lub neej thaum tsis siv: Biodegradable hnab yas feem ntau muaj lub neej txee ntawm 1-3 xyoo, tab sis lub sijhawm no nyob ntawm qhov chaw khaws cia. Yog tias qhov chaw khaws cia qhuav thiab txias, thiab tsis raug ultraviolet rays, cov hnab no tuaj yeem tswj tau lawv cov kev ua tau zoo dua.
Cov txheej txheem degradation: Txawm hais tias lub hnab tuaj yeem nyob ruaj khov thaum lub sijhawm khaws cia ntev, lawv yuav maj mam pib degrade ib zaug raug tshav ntuj, huab cua, noo noo thiab lwm qhov chaw. Cov txheej txheem degradation feem ntau yuav siv li ob peb lub hlis mus rau ob peb xyoos, nyob ntawm seb muaj pes tsawg leeg xws li cov av noo ib puag ncig, qhov kub thiab txias siv.
2. Cov hnab yas Compostable
Khoom siv: Compostable hnab yas feem ntau yog ua los ntawm polylactic acid (PLA) los yog lwm yam ntaub ntawv compostable tag nrho. Cov ntaub ntawv no tuaj yeem degraded tag nrho nyob rau hauv ib qho chaw composting tshwj xeeb yam tsis tau tso tawm tej yam teeb meem. Compostable hnab yas degrade sai thiab tsis txhob cia siab rau aerobic los yog anaerobic tej yam kev mob nyob rau hauv lub ntuj degradation txheej txheem.
Lub neej txee:
Txee lub neej thaum tsis siv: Lub txee lub neej ntawm cov hnab yas compostable feem ntau yog luv, feem ntau 6 lub hlis mus rau 1 xyoo, nyob ntawm cov khoom siv raw thiab cov khoom siv cia. Txij li thaum cov ntaub ntawv ntawm cov hnab no yog tsim los degrade nyob rau hauv ib tug composting ib puag ncig, lawv tau yooj yim cuam tshuam los ntawm tej yam xws li huab cua humidity thiab lub teeb nyob rau hauv ib puag ncig cia.
Cov txheej txheem degradation: Cov hnab yas degradable tag nrho degrade kuj sai, feem ntau pib degrade tag nrho nyob rau hauv ob peb lub hlis mus rau ib xyoos, tshwj xeeb tshaj yog nyob rau hauv ib tug composting ib puag ncig (nyob rau hauv kub thiab high humidity tej yam kev mob). Yog tias raug tshav ntuj lossis ib puag ncig ntuj, lawv tseem yuav pib degrade sai.
