Ngaba amanzi akwibhotile yesiselo akhuselekile?
Ukuvula ibhotile yamanzi amaminerali okanye isiselo yinto eqhelekileyo, kodwa yongeza ibhotile yeplastiki elahliwe kwindawo.
Inxalenye ephambili yokupakishwa kweplastiki yeziphuzo ze-carbonated, amanzi amaminerali, ioli edliwayo kunye nokunye ukutya yi-polyethylene terephthalate (PET).Okwangoku, ukusetyenziswa kweebhotile ze-PET kuqala kwindawo yokupakisha ukutya kweplastiki.
Njengopakisho lokutya, ukuba i-PET ngokwayo iyimveliso efanelekayo, kufuneka ikhuseleke kakhulu kubathengi ukuba bayisebenzise phantsi kweemeko eziqhelekileyo kwaye ayiyi kubangela ingozi yempilo.
Uphando lwezenzululwazi luye lwabonisa ukuba ukuba iibhotile zeplastiki zisetyenziselwa ngokuphindaphindiweyo ukusela amanzi ashushu (angaphezulu kwama-70 degrees Celsius) ixesha elide, okanye zifudunyezwe ngokuthe ngqo ngama-microwaves, iibhondi zekhemikhali kwiibhotile zeplastiki kunye nezinye iiplastiki ziya kutshatyalaliswa, kunye neeplastiki zeplastiki. kwaye i-antioxidants inokufuduselwa kwisiselo.Izinto ezifana ne-oxidants kunye ne-oligomers.Nje ukuba ezi zinto zifuduswe zizixa ezigqithisileyo, ziya kuba nefuthe kwimpilo yabaselayo.Ke ngoko, abathengi kufuneka baqaphele ukuba xa besebenzisa iibhotile ze-PET, kufuneka bazame ukungazalisi ngamanzi ashushu kwaye bazame ukungazifaki kwi-microwave.
Ngaba ikho ingozi efihlakeleyo ekuyilahleni emva kokuyisela?
Iibhotile zeplastiki zilahlwa kwaye zihlakazekile kwizitrato zedolophu, iindawo zokutyelela, imilambo kunye namachibi, kwaye kumacala omabini eendlela ezinkulu kunye noololiwe.Azibangeli kuphela ungcoliseko olubonakalayo, kodwa zibangela ingozi enokwenzeka.
I-PET yi-inert egqwesileyo yekhemikhali kunye nemathiriyeli engaboliyo enokuthi ibekho kwindawo yendalo ixesha elide.Oku kuthetha ukuba ukuba iibhotile zeplastiki ezilahliweyo aziphinda zisetyenziswe, ziya kuqhubeka ziqokelelana kwindawo engqongileyo, ziqhekeke kwaye zibole kwimo engqongileyo, nto leyo ebangela ungcoliseko olumandla kumanzi angaphezulu, umhlaba kunye neelwandle.Izixa ezikhulu zobutyobo beplastiki ezingena emhlabeni zinokuchaphazela ngokunzulu imveliso yomhlaba.
Iingceba zeplastiki ezityiwe ngengozi zizilwanyana zasendle okanye izilwanyana zaselwandle zinokubangela ukwenzakala okufayo kwizilwanyana kwaye zibeke emngciphekweni ukhuseleko lwe-ecosystem.Ngokutsho kweUnited Nations Environment Programme (UNEP), i-99% yeentaka kulindeleke ukuba zitye iplastiki ngo-2050.
Ukongeza, iiplastiki zinokubola zibe ngamasuntswana e-microplastic, anokuthi afakwe kwizinto eziphilayo kwaye ekugqibeleni achaphazele impilo yabantu ngekhonkco lokutya.INkqubo yeZizwe eziManyeneyo yokusiNgqongileyo ibonise ukuba ubuninzi benkunkuma yeplastiki elwandle isongela ukhuseleko lwezilwanyana zaselwandle, kwaye uqikelelo olulondolozayo lubangela ukulahlekelwa kwezoqoqosho ukuya kwi-13 yeebhiliyoni zeedola zaseMelika minyaka yonke.Ungcoliseko lweplastiki yaselwandle ludweliswe njengenye yezinto ezilishumi eziphezulu ezingxamisekileyo zokusingqongileyo ezifanele ukuxhalabisa kule minyaka ili-10 idlulileyo.
Ngaba i-microplastics ingene ebomini bethu?
I-Microplastics, ngokubanzi ibhekisela kuyo nayiphi na iingceba zeplastiki, iifayibha, iziqwenga, njl. njl“ISicwangciso sokuSebenza soLawulo lokuNgcoliseka kwePlastiki ngexesha leSicwangciso seMinyaka emiHlanu se-14” esikhutshwe lilizwe lam sikwadwelisa ii-microplastics njengomthombo omtsha wongcoliseko lwenkxalabo engundoqo.
Umthombo we-microplastics unokuba ngamasuntswana eplastiki, okanye unokukhutshwa ngeemveliso zeplastiki ngenxa yokukhanya, isimo sezulu, ubushushu obuphezulu, uxinzelelo lomatshini, njl.
Uphando lubonisa ukuba ukuba abantu badla i-5 grams ye-microplastics eyongezelelweyo ngeveki, ezinye ze-microplastics aziyi kukhutshwa kwi-stool, kodwa ziya kuqokelela kwizitho zomzimba okanye igazi.Ukongezelela, i-microplastics inokungena kwi-membrane yeseli kwaye ingene kwinkqubo yokujikeleza komzimba womntu, enokuba nefuthe elibi ekusebenzeni kweeseli.Uphononongo lufumene ukuba i-microplastics kwiimvavanyo kwizilwanyana zibonise iingxaki ezinjengokuvuvukala, iiseli ezivalayo kunye ne-metabolism.
Uncwadi oluninzi lwasekhaya nolwamanye amazwe lunikela ingxelo yokuba izinto zokunxibelelana nokutya, njengeengxowa zeti, iibhotile zabantwana, iikomityi zephepha, iibhokisi zesidlo sasemini, njl.Ngaphezu koko, le ndawo yindawo eyimfama yokulawula kwaye kufuneka ihlawulwe ingqalelo ekhethekileyo.
Ingaba iibhotile zeplastiki ezisetyenzisiweyo zingaphinda zisetyenziswe?
Ingaba iibhotile zeplastiki ezisetyenzisiweyo zingaphinda zisetyenziswe?
Ngokwethiyori, ngaphandle kweebhotile zeplastiki ezingcoliseke kakhulu, zonke iibhotile zesiselo zinokuphinda zisetyenziswe.Nangona kunjalo, ngexesha lokusetyenziswa kunye nokuphinda kusetyenziswe iibhotile zesiselo se-PET, ezinye izinto ezingcolisayo zangaphandle zinokungeniswa, njengegrisi yokutya, iintsalela zesiselo, abacoci bezindlu, kunye nezibulali-zinambuzane.Ezi zinto zisenokuhlala kwi-PET ehlaziyiweyo.
Xa i-PET esetyenzisiweyo equlethe ezi zinto zingasentla isetyenziswa kwizinto zokunxibelelana nokutya, ezi zinto zinokufudukela ekutyeni, nto leyo esongela impilo yabathengi.Zombini i-European Union kunye ne-United States zimisela ukuba i-PET esetyenzisiweyo kwakhona kufuneka ihlangabezane nothotho lweemfuneko zesalathiso sokhuseleko ezisuka kumthombo ngaphambi kokuba zisetyenziselwe ukupakishwa kokutya.
Ngokuphuculwa kolwazi lwabathengi malunga nokuphinda kusetyenziswe ibhotile yesiselo, ukusekwa kwenkqubo ecocekileyo yokuphinda isetyenziswe, kunye nokuphuculwa okuqhubekayo komgangatho wokutya wokupakishwa kweplastiki kunye neenkqubo zokucoca, ziya zisanda iinkampani ngoku zikwazi ukufezekisa ukusetyenzwa kwakhona okusemgangathweni kunye nokuvuselelwa okusebenzayo kweplastiki. iibhotile zesiselo.Iibhotile zesiselo ezihlangabezana neemfuno zokhuseleko lwemathiriyeli yokutya ziyaveliswa kwaye ziphinde zisetyenziselwe ukupakishwa kwesiselo.
Ixesha lokuposa: Nov-18-2023