Zambiri Zapulasitiki Yosasinthika

1. Kodi pulasitiki wotsika ndi chiyani?

Pulasitiki yowonongeka ndi lingaliro lalikulu. Ndi nthawi yayitali ndipo imakhala ndi gawo limodzi kapena angapo pansi pazomwe zanenedwa zachilengedwe, zomwe zimapangitsa kusintha kwakukulu kwamankhwala, kutayika kwa zinthu zina (monga umphumphu, kuchuluka kwa ma molekyulu, kapangidwe kapena mphamvu yamakina) ndi / kapena kusweka pulasitiki.

2. Kodi pulasitiki wosungunuka ndi chiyani?

Mapulasitiki owonongeka ndi mapulasitiki omwe amatha kuwola chifukwa cha zinthu zamoyo, zomwe nthawi zambiri zimakhala tizilombo ting'onoting'ono, kulowa m'madzi, carbon dioxide, ndi zotsalira zazomera. Mapulasitiki omwe amatha kuwonongeka nthawi zambiri amapangidwa ndi zinthu zongowonjezwdwa, tizilombo ting'onoting'ono, petrochemicals, kapena kuphatikiza zonse zitatuzi.

3. Kodi zinthu zowola kuwola ndi chiyani?

Zida zomwe zimatha kuwonongeka zimaphatikizira zinthu zachilengedwe zofananira ndi pulasitiki monga mapadi, wowuma, mapepala, ndi zina zambiri, komanso mapulasitiki oyipa omwe amapezeka ndi kaphatikizidwe kapena kaphatikizidwe ka mankhwala.

Pulasitiki yosungunuka imatha kunena za mchere wosakanikirana ndi michere yatsopano (monga mitembo ya tizilombo tating'onoting'ono, ndi zina zambiri) zomwe kuwonongeka kwake kumachitika makamaka chifukwa cha tizilombo tachilengedwe m'chilengedwe monga nthaka ndi / kapena mchenga, ndi / kapena zinthu zina monga zinthu zopangira manyowa kapena chimbudzi cha anaerobic kapena madzi amadzimadzi amadzimadzi, omwe pamapeto pake adzasandulika carbon dioxide (CO2) kapena / ndi methane (CH4), madzi (H2O) ndi zinthu zomwe zili mmenemo.

Tiyenera kudziwa kuti mtundu uliwonse wazinthu zosawonongeka, kuphatikiza pepala, zimafunikira zachilengedwe zina chifukwa cha kuwonongeka kwake. Ngati ilibe zowonongera, makamaka zamoyo zazing'onozing'ono, kuwonongeka kwake kumachedwa kwambiri; nthawi yomweyo, sizinthu zonse zomwe zitha kuwonongeka zomwe zitha kuwonongeka msanga zachilengedwe zilizonse. Chifukwa chake, tikulimbikitsidwa kuti tiwone ngati zakuthupi zimatha kuwonongeka powerenga zachilengedwe zomwe zili mozungulira ndikuwunika momwe zimapangidwira.

4. Mitundu yosiyanasiyana ya mapulasitiki omwe amatha kuwonongeka

Kutengera mtundu wanji wa zopangira zomwe zimagwiritsidwa ntchito, pulasitiki wosungunuka amatha kugawidwa m'magulu anayi. Gawo loyamba ndi pulasitiki yomwe imakonzedwa mwachindunji kuchokera kuzinthu zachilengedwe. Msika pakadali pano, pulasitiki yosungunuka, yomwe imapangidwa ndi ma polima achilengedwe makamaka imaphatikizapo wowuma wa thermoplastic, biocellulose ndi polysaccharides etc.; Gawo lachiwiri ndi polima yemwe amapezeka ndi tizilombo toyambitsa matenda komanso kaphatikizidwe ka mankhwala, monga polylactic acid (PLA), ndi zina .; Gulu lachitatu ndi polima, lomwe limapangidwa mwachindunji ndi zinthu zazing'onozing'ono, monga polyhydroxyalkanoate (PHA), ndi zina .; Gulu lachinayi ndi pulasitiki yosungunuka yomwe imapezeka posakanikirana ndi zomwe zatchulidwazi kapena powonjezerapo mankhwala ena.


Post nthawi: Mar-08-2021