"Ipulasitiki ebonakalayo" iyikhambi elibalulekile lokulawula ukungcoliswa kwepulasitiki.
Ukusetshenziswa kwamapulasitiki angenangqondo anqatshelwe. Yini Engasetshenziswa? Ungakunciphisa kanjani ukungcoliswa kwepulasitiki? Vumela ipulasitiki ilulaza? Kwenze kube yinto enobungane bemvelo. Kepha, ingabe amaplastiki angathandeki anciphisa ngempela ukungcoliswa kwepulasitiki? Uma ezinye izengezo zengezwa epulasitiki ukuze zikwenze kube lula ukwehlisa umoya, futhi kusekususelwa kupulasitiki, ingabe kungcolile ngempela imvelo? Abantu abaningi bayangabaza. Abanye abantu bacabanga nokuthi lokhu kumane kuyindilinga entsha ye-Carnival embonini. Ngakho-ke, kunamapulasitiki amaningi acekayo anekhwalithi engalingani nezindleko emakethe. Ingabe lokhu kuyinto enhle noma into embi? Ngabe kuzoletha ingcindezi entsha yezemvelo?
Okokuqala, ake sidumise amapulasitiki awonakalisiwe. Amapulasitiki angenakuqhathaniswa ahlukaniswe ngamapulasitiki angenakusebenza, amapulasitiki we-thermal oxidative adfrativation, Plastics we-PhotodeGradable kanye namapulasitiki anempi. Bonke "bonke" bancipha "kepha izindleko ze-plastitics ezihlukumezanayo ezixakile kanye namaplastiki we-photodegradable ahlukile kaningana kusuka ku-plastistics engathandeki kanye namapulasitiki akhona. I-plastitics enenkani ye-oksijini kanye namapulasitiki angonakala kalula kuthiwa "anyamalale" avela emhlabeni ngemuva kokuvulelwa ukushisa noma ukukhanya isikhathi esithile. Kepha yilezi zindleko eziphansi futhi "okulula ukunyamalala" ezibizwa nge- "PM2.5 yoMkhakha Wezesasi." Ngenxa yokuthi lobu buchwepheshe bookonakalisa bookonakalisa bungalimaza amapulasitiki kuphela ezincemeni ezingabonakali ezincane, kepha azikwazi ukubenza banyamalale. Lezi zinhlayiya azibonakali emoyeni, emhlabathini nasemanzini ngenxa yezimpawu zazo ezincanyana nezikhanyayo. Z ekugcineni ugqoke izidalwa.
Kusukela ngoJuni 2019, iYurophu yavimbela ukusetshenziswa kwemikhiqizo elahlekile eyenziwe nge-plastitics engonakalisiwe, futhi i-Australia izovala amapulasitiki anjalo ngo-2022.
E-China lapho kwavela khona "umkhuhlane we-degnadal umkhuhlane, njengoba lokhu kusalindele inani elikhulu labathengi abafuna ukuthenga" izikhwama zepulasitiki ezinokonakalayo kodwa angazi imfihlakalo. I- "Order Emingced Evimbela ipulasitiki" ekhishwe ngo-2020 ivimbela ukusetshenziswa kwezikhwama zepulasitiki "ezingapheliyo" futhi azicacisi ukuthi yiziphi izikhwama zepulasitiki ezicekayo kufanele zisetshenziswe. Ngenxa yezindleko eziphakeme ze-plastics ye-biodegradable, amapulasitiki we-thermal oxidative advocate, photodegradable plastitics, noma amapulasitiki asuselwa ku-bio asetshenziswa nge-hybrid nawo izinqumo ezinhle zezindawo ezingadingi ukusetshenziswa kwamapulasitiki angenakudinga ngokuphelele. Yize lelipulasitiki lingenakugxeki ngokuphelele, okungenani ingxenye ye-PE ayikho.
Kodwa-ke, emakethe yesiyaluyalu, kuvame ukuba nzima kubathengi ukukhomba isigaba seplastiki engonakalisiwe. Eqinisweni, amabhizinisi amaningi awawazi umehluko phakathi kopristics okuwohloka ngokuphelele futhi anezinhlekelele ezingonakaliswa yi-axistatively, amapulasitiki anenkani ekhanyayo kanye namapulasitiki asuselwa ku-bio. Imvamisa bakhetha owokugcina abashibhile, becabanga ukuthi kungonakali ngokuphelele. Yingakho amakhasimende amaningi athi: "Kungani iyunithi yakho intengo kaningana ibiza kaningi kunezinye? Njengomenzi, akunakwenzeka ukuthi adukise abathengi ngokulebula amasampula ane- 'dealfutatarable' emikhiqizweni enjalo.
Ipulasitiki ebonakalayo efanelekayo kufanele ibe "impahla ephelele ye-biodegradable." Njengamanje, impahla esetshenziswa kakhulu ye-biodegradable iyi-polylactic acid (PLA), eyenziwe nge-biomoustoments efana nesitashi kanye nommbila. Ngezinqubo ezinjengomngcwabo wenhlabathi, ukuqamba, ukonakaliswa kwamanzi amasha, kanye nokonakaliswa kolwandle, lokhu okuqukethwe kungadilizwa ngokuphelele kumanzi kanye nekhabhoni diokmide ngama-microorganisms ngaphandle kokubangela umthwalo owengeziwe emvelweni.
Emadolobheni lapho "ukuvinjelwa kwepulasitiki" kwenziwe, singabona izikhwama zepulasitiki ezingenakubonwa ezihlangabezana ne-G standard entsha. Ngezansi kwayo, ungabona izimpawu ze- "Pbat + Pla" ne- "JJ" noma "amahlumela ubhontshisi". Njengamanje, lolu hlobo kuphela lwezinto ezibonakalayo ezihlangabezana nezinto ezihlangabezana nezinto ezilungele izinto ezibonakalayo ezingenamthelela emvelweni.
I-Dingli phama ivula uhambo oluhlaza okotshani!
Isikhathi sePosi: Jan-07-2022