Dab tsi yog qhov txawv ntawm biodegradable thiab compostable hnab?
Nyob rau hauv xyoo tas los no, biodegradable thiab compostable hnab tau dhau los ua neeg nyiam dua li lwm txoj hauv kev rau cov hnab yas. Txawm hais tias ob qho tib si yuav zoo sib xws hauv lawv cov kev siv zog los txo cov pov tseg, muaj qhov sib txawv tseem ceeb ntawm cov hnab ntim biodegradable thiab compostable. Hauv tsab xov xwm no, peb yuav tshawb xyuas qhov sib txawv ntawm ob hom hnab no thiab qhov cuam tshuam lawv muaj rau ib puag ncig.
** Kev sib xyaw
Lub hauv paus sib txawv ntawm biodegradable thiab compostable hnab yog lawv muaj pes tsawg leeg. Biodegradable hnab yog tsim los ntawm cov roj av-raws li plastics, uas yog tsim los rhuav tshem ib txwm dhau sijhawm los ntawm kev raug lub teeb thiab oxygen. Nyob rau hauv sib piv, lub hnab compostable feem ntau yog tsim los ntawm cov ntaub ntawv organic, xws li pob kws starch, uas tawg tag nrho rau hauv av los ntawm composting.
** Kev degradation
Thaum cov hnab ntim biodegradable puas tawg, cov txheej txheem tuaj yeem siv sijhawm ntau xyoo thiab tuaj yeem tso tseg cov tshuaj lom neeg uas tsim kev puas tsuaj rau ib puag ncig. Tsis tas li ntawd, feem ntau cov hnab biodegradable tsuas yog tawg hauv cov chaw tsim khoom siv hauv tsev, tsis yog hauv tsev composting systems. Nyob rau hauv sib piv, lub hnab compostable, thaum muab pov tseg kom raug, yuav tawg tag nrho hauv tsev composting systems thiab yuav tsis tawm tom qab cov tshuaj lom residues.
** Ntawv pov thawj
Lwm qhov sib txawv tseem ceeb ntawm biodegradable thiab compostable hnab yog lawv cov ntawv pov thawj. Biodegradable hnab tsis muaj cov ntaub ntawv pov thawj nyob rau hauv qhov chaw, txhais tau hais tias cov tuam txhab lag luam tuaj yeem thov rau lawv cov khoom' biodegradability yam tsis muaj kev saib xyuas. Qhov tsis muaj kev tswj hwm no tau ua rau muaj kev tsis sib haum xeeb ntawm cov neeg siv khoom thiab ua rau ntau tus tsis ntseeg txog qhov ua tau zoo ntawm cov hnab ntim biodegradable.
Hauv qhov sib piv, cov hnab ntim khoom siv tau ntawv pov thawj los ntawm ntau lub koom haum ywj pheej, xws li Biodegradable Products Institute (BPI) thiab European Bioplastics Association (EUBP). Cov koom haum no tau teeb tsa cov kev cai nruj rau kev sib xyaw ua ke, xws li cov khoom lag luam muaj peev xwm ua kom tawg tag nrho hauv ib lub sijhawm thiab nws tsis muaj tshuaj lom rau ib puag ncig.
** Kev cuam tshuam ib puag ncig
Kev cuam tshuam ib puag ncig ntawm biodegradable thiab compostable hnab kuj txawv heev. Thaum lub hnab biodegradable tuaj yeem ua rau cov khib nyiab tsawg dua, lawv tseem ua rau muaj kuab paug thiab tsis daws teeb meem ntawm cov khib nyiab yas. Thaum cov hnab ntim biodegradable tawg, lawv tso cov methane, cov roj tsev cog khoom muaj zog, mus rau hauv cov huab cua, uas ua rau lub ntiaj teb sov.
Nyob rau hauv sib piv, compostable hnab txo pov tseg thiab muab cov as-ham rau cov av thaum composted kom raug. Los ntawm kev hloov cov organic pov tseg los ntawm qhov chaw pov tseg thiab txhawb kev noj qab haus huv hauv av, cov hnab ntim khoom siv tau ua rau muaj kev lag luam ncig, qhov twg cov peev txheej khaws cia siv ntev li ntev tau.
** Lus xaus
Hauv kev xaus, thaum lub hnab biodegradable thiab compostable tej zaum yuav muaj qee qhov zoo sib xws, muaj qhov sib txawv tseem ceeb hauv lawv cov muaj pes tsawg leeg, degradation, ntawv pov thawj thiab kev cuam tshuam ib puag ncig. Biodegradable hnab yog tsim los ntawm cov roj av-raws li plastics, uas tuaj yeem siv sijhawm ntau xyoo los ua kom tawg thiab tuaj yeem tawm hauv qab cov tshuaj lom. Piv txwv li, lub hnab compostable yog tsim los ntawm cov ntaub ntawv organic thiab tawg tag nrho rau hauv av los ntawm composting, feem ntau nyob rau hauv lub lis piam. Lub hnab compostable tau ntawv pov thawj los ntawm cov koom haum ywj pheej, qhov tseeb uas ua kom lawv cov kev ua tau zoo thiab sib cav tias thaum ob qho khoom muaj lawv qhov zoo, cov hnab compostable yog qhov zoo tshaj plaws ntawm ob qho tib si.