Nyika ine dambudziko guru remabhodhoro epurasitiki.Kuvapo kwayo mumakungwa kwazova nyaya yepasi rose.Kusikwa kwayo kwakatanga muma1800 apo bhodhoro repurasitiki rakabatwa senzira yekuchengetedza sodas inotonhorera uye bhodhoro pacharo raive sarudzo yakakurumbira.Maitiro akabatanidzwa mukugadzira bhodhoro repurasitiki akatanga nekemikari kusungirirwa kwemhando mbiri dzakasiyana dzegasi neoiri mamorekuru anozivikanwa semonomers.Mishonga iyi yakabva yanyunguduka ndokuzogadzirwazve kuita mold.Mabhodhoro akabva azadzwa nemichina.
Nhasi, rudzi rwakajairika rwebhodhoro repurasitiki ndeye PET.PET haina huremu uye inowanzoshandiswa kumabhodhoro ezvinwiwa.Kana ikashandiswazve, inodzikisira mumhando uye inogona kupedzisira yave huni kana fiber inotsiva.Vagadziri vangangofanira kuwedzera virgin plastic kuchengetedza mhando imwechete.Nepo PET ichigona kudzokororwa, chakanyanya kuderera ndechekuti zvinhu zvacho zvakaoma kuchenesa.Kunyange kudzokorodza PET kwakakosha kune zvakatipoteredza, iyi plastiki yave imwe yeanonyanya kushandiswa kumabhodhoro.
Kugadzirwa kwePET isimba rakakura uye rinowedzera mvura.Kuita uku kunoda huwandu hukuru hwemafuta ezvicherwa, izvo zvinoita kuti ive chinhu chinosvibisa zvakanyanya.Mumakore ekuma1970, US ndiyo yainyanya kutengesa oiri pasi rose.Nhasi, tisu mukurusa anotenga oiri munyika.Uye 25% yemabhodhoro epurasitiki atinoshandisa anogadzirwa nemafuta.Uye izvi hazvitomboverengeri simba rinoshandiswa kutakura mabhodhoro aya.
Imwe mhando yebhodhoro repurasitiki ndeye HDPE.HDPE ndiyo isingadhure uye yakajairika mhando yepurasitiki.Inopa hunyoro hwakanaka hunodzivirira.Kunyangwe HDPE isina BPA, inonzi yakachengeteka uye inogona kushandiswazve.Iyo HDPE bhodhoro zvakare iri pachena uye inokweretesa kune sirika skrini yekushongedza.Inokodzera zvigadzirwa zvine tembiricha iri pasi pe190 degrees Fahrenheit asi haina kukodzera mafuta akakosha.Aya mabhodhoro epurasitiki anofanira kushandiswa kune zvigadzirwa zvekudya uye zvinhu zvisingaori, zvakadai sejusi.
Mamwe emabhodhoro emvura ane mukurumbira ane BPA, inova musanganiswa wekugadzira uyo unozivikanwa nekukanganisa endocrine system.Zvinokanganisa kugadzirwa kwehomoni dzemuviri uye zvave zvichibatanidzwa nenjodzi yakawedzera yegomarara rakasiyana-siyana muvana.Saka, kunwa mvura kubva mumabhodhoro epurasitiki haisi ngozi yehutano chete, asi inobatsirawo kumamiriro ekunze ebhodhoro repurasitiki.Kana iwe uchida kudzivisa makemikari aya ane chepfu, iva nechokwadi chekusarudza bhodhoro remvura risina BPA uye mamwe mapurasitiki ekuwedzera.
Imwe mhinduro huru yekusvibiswa kwepurasitiki ndeyekutenga mabhodhoro emvura anogona kushandiswa zvakare.Tsvagiridzo inoratidza kuti kuwedzera kwekutengeswa kwemabhodhoro anozadzwazve kunogona kuchengetedza mabhodhoro epurasitiki anosvika mabhiriyoni 7.6 kubva pakupinda mugungwa gore rega rega.Hurumende inogona zvakare kudzikamisa kana kurambidza mabhodhoro epurasitiki ekushandisa kamwe chete kudzikisa huwandu hwekusvibisa hwavanoburitsa mumakungwa.Iwe unogona zvakare kubata vagadziri vako vepanzvimbo uye uvazivise kuti unotsigira chiito kudzikisa zvisina basa rimwe-kushandisa purasitiki.Iwe unogona zvakare kufunga kuve nhengo yekwako nharaunda nharaunda mubatanidzwa kuti ubatanidzwe mukuedza uku.
Nzira yekugadzira bhodhoro repurasitiki inosanganisira matanho akawanda.Kutanga, mapepa epurasitiki anopiswa mujekiseni mold.Mhepo yakakwira-inodzvanya inobva yawedzera maplastic pellets.Zvadaro, mabhodhoro anofanira kutonhodzwa pakarepo kuchengetedza chimiro chavo.Imwe sarudzo ndeyekutenderedza nitrogen yemvura kana kuvhuvhuta mweya pane tembiricha.Aya maitiro anovimbisa kuti bhodhoro repurasitiki rakagadzikana uye harirasi chimiro chayo.Kana yatonhodzwa, bhodhoro repurasitiki rinogona kuzadzwa.
Kudzokorora kwakakosha, asi mabhodhoro mazhinji epurasitiki haashandiswezve.Kunyangwe dzimwe nzvimbo dzekugadzirisa dzichigamuchira mabhodhoro akadzokororwa, mazhinji anopedzisira ave mumarara kana mumakungwa.Makungwa ane chero pakati pe5 uye 13 miriyoni matani epurasitiki gore rega rega.Zvisikwa zvegungwa zvinomedza epurasitiki uye mamwe acho anotopinda munzira yekudya.Mabhodhoro epurasitiki akagadzirirwa kuva zvinhu zvekushandisa kamwe chete.Nekudaro, iwe unogona kukurudzira vamwe kuti vagadzirise uye vasarudze zvinogona kushandiswa zvakare uye zvinogona kushandiswa zvakare pachinzvimbo.
Mabhodhoro epurasitiki anogadzirwa nezvinhu zvakasiyana-siyana.Zvizhinji zvakajairika zvinhu zvinosanganisira PE, PP, uye PC.Kazhinji, mabhodhoro akagadzirwa nepolyethylene akajeka kana opaque.Mamwe mapolymers ane opaque kupfuura mamwe.Nekudaro, zvimwe zvinhu hazvina kujeka uye zvinogona kunyungudika pasi.Izvi zvinoreva kuti bhodhoro repurasitiki rakagadzirwa kubva mupurasitiki risingadzokerike rinowanzodhura kupfuura rakagadzirwa nezvinhu zvakashandiswa zvakare.Nekudaro, mabhenefiti ekudzokorodza epurasitiki anokodzera iyo yekuwedzera mutengo.
Nguva yekutumira: Jun-07-2022