Dɛn ne plastic bag a nneɛma a nkwa wom sɛe?
Plastic bag a ɛtumi sɛe no yɛ plastic bag a ɛnyɛ den sɛ ɛbɛsɛe nneɛma a atwa yɛn ho ahyia a ɛnam mmoawa nketenkete a wɔyɛ adwuma wɔ composting tebea mu so sɛe kɔ nsuo ne carbon dioxide mu, a ɛmma asase mu awuduru anaa efĩ a ɛtɔ so mmienu mma. Nneɛma a wɔtaa de di dwuma wɔ nneɛma a wɔyɛ mu no bi ne:
PBAT (polybutylene adipate/terephthalate), PLA (polylactic acid), PCL (polycaprolactone), PHA (polyhydroxyalkanoate), ne nneɛma afoforo a wɔde yɛ nneɛma a ɛtumi sɛe.
Tebea bɛn mu na nkotoku a nneɛma a nkwa wom sɛe no sɛe? Tebea horow bɛn na ɛma obi sɛe?
Ɔsɛe a ɛba wɔ tebea horow a wɔde yɛ compost mu
Tebea a wɔde yɛ compost: Nsu a ɛwɔ mu boro 95%, asase, ɔhyew (28-58℃), ne mmoawa nketenkete pɔtee bi.
Dɛn ne plastic bag a ɛtumi sɛe fã bi-?
Nneɛma a ɛsɛe yɛ asinasin nketenkete nkutoo na wontumi nsakra no nsu ne carbon dioxide wɔ bere a wɔakyerɛ no mu. Nneɛma a ɛtumi sɛe wɔ hann mu (te sɛ d2W ne P-Life) de photooxidative agent 1-2% ka atetesɛm PE nneɛma ho. Nneɛma a wɔde PE ne starch afrafra nso wɔ hɔ, a starch fã no betumi asɛe, nanso PE fã a aka no da so ara ntumi nsɛe.
Plastik nkotoku a abɔde a nkwa wom sɛe no dodow yɛ ahe?
Sɛnea EU ne ɔman gyinapɛn kyerɛ no, ɛsɛ sɛ wɔde bɛboro 90% a ɛwɔ resin no mu no sɛe nsuo ne carbon dioxide
Nsonsonoe bɛn na ɛwɔ nkotoku a nneɛma a nkwa wom sɛe ne plastic bag a ɛnyɛ den ntam? Ɔkwan bɛn so na wobetumi ahu?
Wɔ composting akyi no, akwan a edidi so yi wɔ hɔ a wɔfa so hu no ntɛmntɛm:
Infrared spectroscopy (a wɔde toto molecule nhyehyɛe ahorow ho) a wɔde hu nea ɛwɔ plastic bag ahorow mu ntɛmntɛm
Chemical pyrolysis (wɔbɛtumi aporɔw nneɛma a ɛtumi sɛe ntɛmntɛm wɔ alkaline tebea a ɛyɛ hyeɛ mu, berɛ a plastic bag a ɛyɛ mpapahwekwa rensɛe) .
Nkotoku a nkwaboaa tumi sɛe no nkwa nna yɛ dɛn?
Asram 12 wɔ tebea a wɔatoto mu (wɔabɔ ho ban afi nsu, asase, hann, ne nea ɛkeka ho) .
Dɛn ne PLA na dɛn ne PBAT?
PLA yɛ polymer a wɔyɛ denam starch a wɔdannan no lactic acid monomers denam fermentation so, na afei wɔde nnuru yɛ polymerized ma ɛbɛyɛ polylactic acid.
PBAT yɛ polymer a wɔde nnuru a wɔde yɛ adipic acid, terephthalic acid, ne butanediol na ɛyɛ polymer.
Nneɛma abien no nyinaa tumi sɛe nsu ne carbon dioxide wɔ tebea horow a wɔde yɛ compost mu.
Dɛn nti na wode PBAT ka ho?
PBAT wɔ ahoɔden a ɛkyɛn so, wotumi di ho dwuma, na ɛko tia ɔhyew a ɛkɔ soro ne nea ɛba fam, a ebetumi adi ahiade ahorow a ɛwɔ sini a wɔde di dwuma mu ho dwuma. Bio nso, PBAT wɔ baabiara, ɛnyɛ den sɛ wɔbɛyɛ no pii, na ɛho ka sua, na ɛma ɛyɛ ade a eye kyɛn so a wɔde besi polyolefin nneɛma ananmu.
