●Empilweni yansuku zonke, inani lezikhwama zepulasitiki likhulu impela, futhi izinhlobo zezikhwama zepulasitiki nazo zihlukene.Ngokuvamile, asivamile ukunaka izinto zezikhwama zepulasitiki kanye nomthelela emvelweni ngemva kokulahlwa.Ngokukhuthazwa kancane kancane "kwe-plastic ban", abathengi abaningi baye baqala ukunaka izikhwama zepulasitiki ezonakele.Amakhasimende amaningi azoshintshela ezikhwameni zepulasitiki ezonakele, nokho amakhasimende amaningi awawazi umehluko phakathi kwezikhwama zepulasitiki ezijwayelekile, izikhwama zepulasitiki ezibolile kanye nezikhwama ezibolayo.Ake ngihlanganyele nawe.
Izinhlobo ezintathu zezikhwama zepulasitiki ngencazelo, i-Advantage kanye ne-Didvantage
Incazelo:
● Izikhwama zepulasitiki ezivamile ezinye izinto zepulasitiki ezifana ne-PE, futhi ingxenye eyinhloko i-resin.I-resin ibhekisela kwinhlanganisela ye-polymer engazange ihlanganiswe nezithasiselo ezihlukahlukene.I-resin yenza cishe amaphesenti angama-40 kuya kwangu-100 esisindo esiphelele sepulasitiki.Izakhiwo eziyisisekelo zamapulasitiki zinqunywa ikakhulukazi uhlobo lwe-resin, kodwa izithasiselo nazo zidlala indima ebalulekile.Izikhwama zepulasitiki ezibolayo zinezinga likazwelonke lokuvikelwa kwemvelo i-GB/T21661-2008, kuyilapho izikhwama zepulasitiki zendabuko zingadingi ukuhambisana naleli zinga.Izikhwama zepulasitiki zendabuko zithatha iminyaka engu-200 noma ngaphezulu ukuze zilulazeke ngemva kokulahlwa.Imbangela "ukungcola okumhlophe" endaweni ezungezile.
● Isikhwama sepulasitiki esiwohlokayo: Ngokwezwi nezwi, siyisikhwama sepulasitiki esonakele, okusho ukuthi singonakala, kodwa sisaqukethe ipulasitiki nezinye izithako ezihambisanayo, kodwa sonakala ngokwengxenye kuphela, asiwonakali ngokuphelele.Ikakhulukazi yenziwe ngepulasitiki ye-polyethylene, engezwe nge-photodegradant ne-calcium carbonate kanye nezinye izimpushana zamaminerali, ezaziwa nangokuthi izikhwama zepulasitiki ezibolayo.Lolu hlobo lwesikhwama sepulasitiki lubola ngaphansi kwesenzo sokukhanya kwelanga.Kodwa-ke, i-polyethylene ngemuva kokususwa kwe-fen isekhona endaweni yemvelo.Nakuba ukuba khona kokungcola okumhlophe kungabonakali endleleni yokubona, ukungcola okumhlophe kusahlasela indawo esizungezile njengezinhlayiya ezincane, okungase kuthiwe zelapha izimpawu kodwa hhayi imbangela.Ukuyibeka kalula, ngemva kokulahla isikhwama sepulasitiki esonakele, sisazongcolisa imvelo ngezinga elithile, njengesikhwama sepulasitiki sendabuko.Indawo yayo yokugcina empeleni iyafana neyezikhwama zepulasitiki zendabuko.Ngemva kokulahlwa, zonke zingena ezindaweni zokulahla imfucumfucu noma zishiswe, futhi azikwazi ukucekelwa phansi yi-composting ekhethekile yezimboni.Ngakho-ke, "okonakalayo" nje "kuwohloka", akulingani "nokuwohloka kwemvelo okugcwele".Ngomqondo othile, izikhwama zepulasitiki ezonakaliswayo azisona isixazululo esingenzeka "sokungcola okumhlophe", noma "i-panacea" yokuxazulula ukungcoliswa kwezikhwama zepulasitiki.Empeleni, isazokhiqiza udoti omningi, kanye nezikhwama zepulasitiki ezonakaliswayo empeleni Azonakaliswa.
● Izikhwama zepulasitiki ezibolayo: Izinto ezibonakalayo zezikhwama zepulasitiki ezibolayo zenziwe nge-PLA (i-polyacid) ne-PBAT (i-polyadipic acid).Izinto ezinjalo futhi zihlanganisa i-PHAS, i-PBA, i-PBS, njll., eyaziwa njengezinto ezihambisana nemvelo.Imikhiqizo eluhlaza eyingozi.Impahla yesikhwama sepulasitiki ebolayo, eyaziwa nangokuthi ipulasitiki ebolayo, ibhekisela esenzweni samagciwane akhona emvelweni ngaphansi kwezimo zemvelo ezifana nenhlabathi noma inhlabathi enesihlabathi, noma ngaphansi kwezimo ezithile ezifana nezimo zokwenza umquba noma izimo zokugaya ukudla okune-anaerobic noma izixazululo zesiko elimanzi.Idala ukuwohloka, futhi ekugcineni yonakale ngokuphelele ibe yi-carbon dioxide (CO2), i-methane (CH4), amanzi (H2O) kanye nosawoti wamaminerali owenziwe ngamaminerali wezakhi eziqukethwe, kanye namapulasitiki amasha e-biomass.
Okuhle nokubi :
Izikhwama zepulasitiki ezivamile
Izinzuzo
Akubizi
ilula kakhulu
umthamo omkhulu
Ukubi
×Umjikelezo wokwehliswa kwesithunzi
yinde kakhulu
×Kunzima ukuphatha
Isikhwama sepulasitiki esonakele
Izinzuzo
Kwehliswe ngokuphelele,
ukukhiqiza i-carbon dioxide namanzi
Amandla amahle we-tensile kanye ne-ductility
Ihlukanisa iphunga, i-bacteriostatic
kanye nezindawo zokulwa nesikhutha
Izikhwama zepulasitiki ezibolayo
Izikhwama zepulasitiki ezibolayokukhona izikhwama biocompostable ngokugcwele futhi abolekayo.Ngaphansi kwesimo sokuwohloka komquba, zingasuswa ngokuphelele kungakapheli izinsuku eziyi-180.Imikhiqizo yokucekela phansi isikhutha namanzi, angena ngokuqondile emhlabathini futhi amuncwa izitshalo, abuyele emhlabathini, noma angene endaweni evamile.Ingacekelwa phansi ngaphandle kokudala ukungcoliswa kwemvelo, ukuze ivele emvelweni futhi ibe ngeyemvelo.Izikhwama zepulasitiki ezibolayo zingashiwo ukuthi zithatha indawo yepulasitiki, enganciphisa kakhulu inkinga yokungcola okumhlophe okubangelwa ukungakwazi ukuxazulula izikhwama zepulasitiki ezivamile.Ingaxazulula inkinga yokungcoliswa kwepulasitiki, kunokwelapha izimpawu.Ukusetshenziswa kwezikhwama zepulasitiki ezibolayo kunciphisa kakhulu ukungcoliswa kwemikhiqizo yepulasitiki endaweni ezungezile.Ihambisana nemvelo, inempilo futhi ihlanzekile, futhi ingasetshenziswa ngokuzethemba.Izikhwama zepulasitiki ezibolayo zinokonakala okungcono kunezinye izinto, zisebenzisa isikhathi eside kunezikhwama zamaphepha, futhi zibiza kancane kunezikhwama zamaphepha.
Landela & Usithinte
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Isikhathi sokuthumela: Mar-10-2022