Posachedwapa, kafukufuku wochokera ku yunivesite ya McGill ku Canada anasonyeza kuti matumba a tiyi amamasula mabiliyoni ambiri a tinthu tating'ono ta pulasitiki pa kutentha kwakukulu.Akuti kapu iliyonse ya tiyi yofulidwa kuchokera ku thumba lililonse la tiyi imakhala ndi ma microplastics 11.6 biliyoni ndi tinthu tating'ono ta 3.1 biliyoni.Kafukufukuyu adasindikizidwa mu American Journal of Environmental Science and Technology pa Seputembara 25.
Anasankha mwachisawawa matumba anayi a tiyi apulasitiki: matumba awiri a nayiloni ndi matumba awiri a PET.Makamaka, PET angagwiritsidwe ntchito pa kutentha osiyanasiyana 55-60 ℃ kwa nthawi yaitali, ndipo akhoza kupirira kutentha kwa 65 ℃ ndi kutentha otsika - 70 ℃ kwa nthawi yochepa, ndipo ali ndi mphamvu pang'ono pa makina katundu wake. kutentha kwambiri ndi kutsika.Tayani tiyi, sambani chikwamacho ndi madzi oyeretsedwa, kenako yerekezerani njira yopangira tiyi, ndikuviika thumba lopanda kanthu ndi madzi otentha 95 ℃ kwa mphindi zisanu.Ndizodziwikiratu kuti madzi omwe timaphika tiyi ndi madzi otentha, ndipo kutentha kwake ndikwambiri kuposa momwe PET amagwiritsira ntchito.
Kuzindikira kwa McGill kukuwonetsa kuti tinthu tating'onoting'ono tapulasitiki titulutsidwa koyamba.Kapu ya thumba la tiyi imatha kutulutsa ma microns 11.6 biliyoni ndi ma nanometer 3.1 biliyoni a tinthu tapulasitiki!Komanso, kaya tinthu tating'onoting'ono tapulasitiki tokhala ndi poizoni kwa zamoyo.Pofuna kumvetsetsa zakupha kwachilengedwe, ofufuzawo adagwiritsa ntchito utitiri wamadzi, wosabala msana, womwe ndi chamoyo chachitsanzo chomwe chimagwiritsidwa ntchito poyesa poizoni m'chilengedwe.Kuchuluka kwa thumba la tiyi, m'pamenenso utitiri wamadzi umayamba kusambira.Zachidziwikire, zitsulo zolemera + pulasitiki ndizoyipa kuposa tinthu tating'ono ta pulasitiki.Pamapeto pake, utitiri wamadziwo sunafe, koma unali wopunduka.Kafukufukuyu adatsimikiza kuti ngati tinthu tating'onoting'ono ta pulasitiki timakhudza thanzi la munthu tifunika kufufuza kwina.
Nthawi yotumiza: Feb-14-2023