Ukungcoliswa kwepulasitiki kubeka engcupheni enkulu emvelweni yethu, kukhiqizwa amathani angaphezu kwezigidi eziyizinkulungwane eziyisishiyagalolunye kusukela ngawo-1950s, kanye namathani ayizigidi ezingama-8,3 aphela olwandle lwethu ngonyaka. Naphezu kwemizamo yomhlaba wonke, yi-9% kuphela yepulasitiki evuselelwa kabusha, ishiye iningi lingcolise ama-ecosystem ethu noma i-linger ekulahlekelweni komhlaba amakhulu.
Omunye wabanikeli abaphambili kule nkinga ukumelana kwezinto zepulasitiki ezisetshenziswa ngakunye njengezikhwama zepulasitiki. Lezi zikhwama, ezisetshenziselwa isilinganiso semizuzu eyi-12 kuphela, zithuthukisa ukuthembela kwethu kumapulasitiki alahlwayo. Inqubo yabo yokubola ingathatha iminyaka engaphezu kwe-500, ikhipha ama-microplastics ayingozi emvelweni.
Kodwa-ke, phakathi kwezinselele, amapulasitiki angahleki anikela ngesisombululo esithembisayo. Kwenziwe kusuka ku-20% noma ngaphezulu izinto ezivuselelekayo, ama-bio-plastics anikeza ithuba lokunciphisa ukuncika kwethu kumafutha emifino futhi anciphise i-carbon footprint yethu. I-PLA, ethathwe emithonjeni yezitshalo efana nesitashi sommbila, kanye ne-PHA, ekhiqizwa ama-microorganisms, yizinhlobo ezimbili eziyinhloko ze-bio-plastics ezisebenzisa izinhlelo eziguquguqukayo.
Ngenkathi amapulasitiki e-biodegradable aletha enye indlela enobungane, kubalulekile ukucubungula imiphumela emibi yokukhiqiza. Ukulungiswa kwamakhemikhali kanye nezenzo zezolimo ezihambisana nokukhiqizwa kwe-bioplastic kungaba nomthelela ekungcoleni nasezindabeni zokusetshenziswa komhlaba. Ngaphezu kwalokho, ingqalasizinda yokulahla efanele ye-bio-plastics ihlala ilinganiselwe, iqokomisa isidingo samasu aphelele okulawulwa kwemfucuza.
Ngakolunye uhlangothi, amapulasitiki asetshenziswa kabusha anikela ngesisombululo esiphoqayo ngempumelelo efakazelwe. Ngokukhuthaza ukuphinda usebenzise kabusha nokutshala imali kwingqalasizinda ukusekela, singaphambukisa imfucuza yepulasitiki kusuka ekunciphiseni komhlaba futhi kunciphise umthelela wethu wezemvelo. Ngenkathi amapulasitiki e-biodegradable abonisa isithembiso, ukuguquka okuya emnothweni oyindilinga, lapho izinto zokwakha zisetshenziswa futhi ziphinde zisetshenziswe kabusha, zingase zinikeze isixazululo esimeme esimeme seplastiki yepulasitiki.
Isikhathi Sokuthumela: APR-19-2024