Uma kucatshangelwa izinketho zokupakisha ukudla zokulethwa noma zokuthatha ukudla, amabhizinisi ahlaziya ukuthi ukudla kuhlala kusha kangakanani esitsheni. Phakathi nenqubo, ayahluleka ukuhlola izinketho ezitholakalayo futhi awanaki isici sokusimama. Ngokuvamile, kunezinketho ezimbili zamabhizinisi okudla: amabhokisi ephepha kanye nokupakisha kwepulasitiki. Kubalulekile ukukhetha inketho enikeza ukungabizi, ukuhlukahluka, ikhwalithi, kanye nomklamo onobungani nemvelo.
Ngokusho kwe-US Environmental Protection Agency (EPA), izitsha kanye nokupakisha kungaphezu kuka-28% wemfucuza yonke kamasipala (MSW) e-United States kuphela. Ukupakisha ukudla neziphuzo kulinganiselwa ku-50% wayo yonke imfucuza yokupakisha, ngokusho kwe-Frontiers in Food Science and Technology. Ngakho-ke, ukupakisha ukudla kanye nokulethwa kokudla kuyinkinga enkulu njengoba iningi lala mfucuza liphelela ezindaweni zokulahla udoti kanye nolwandle, okunomthelela omkhulu ezimpilweni zasolwandle, okubangela ukukhishwa kwekhabhoni, ukusetshenziswa kwezinsiza kanye nokungcola.
Ngenxa yalezi zinkinga, amabhizinisi manje azivumelanisa nemigomo enobungani nemvelo ngaphandle kokubeka engcupheni ukusebenza kokudla okushisayo noma okunamafutha. Abathengi nezindawo zokudlela manje sebebheke phambili ukupakishwa okusimeme lokho kufaka phakathi izinto ezibalulekile njengokubola, ukuphinda kusetshenziswe, kanye nokusebenza kahle kwamandla. Ngakho-ke, kungakhathaliseki ukuthi ungumnikazi webhizinisi noma indawo yokudlela, futhi ubheke phambili ekushintsheni ibhizinisi lakho liye ekupakisheni okusimeme ngenkathi futhi ugcina ukudla kusha, lesi sihloko siqhathanisa futhi siqokomisa izinzuzo nezingozi zalezi zinhlobo ezimbili ukuze sikusize uvumelanise ibhizinisi lakho nobungani nemvelo ngaphandle kokubeka engcupheni ikhwalithi yokudla.
Kulesi sigaba salesi sihloko, sizoxoxa ngomthelela wemvelo wokupakisha kwepulasitiki nokuthi yiziphi izici ezibangela ukushaqeka kwayo okukhulu kwekhabhoni, kusukela ekukhishweni kukaphethiloli wezinsalela kuya ekubeni khona kwayo isikhathi eside olwandle lwethu.
Kunezinkinga eziningi zemvelo ezihlobene nokupakishwa kwepulasitiki, futhi phakathi kwalezo zinkinga ukuthi ukudalwa kokupakishwa kwepulasitiki kudinga ukudala ama-polymer afana ne-polyethylene noma i-PET, ancike kakhulu ezinsizeni ezingavuseleleki. Inqubo yokukhiqiza inezidingo eziphezulu zamandla ezihlobene nemboni yamakhemikhali kaphethiloli:
Enye yezinkinga ezinkulu ngepulasitiki ukuthi ihlala isikhathi eside kangakanani. Amapulasitiki angaboli abola abe yizicucu ezincane ezibizwa ngokuthi ama-microplastics angahlala iminyaka engu-400 kuya kwengu-1,000. Lokhu kubangela ukuthi lezi zicucu zigcine zisezindaweni zokulahla udoti noma olwandle, okusongela ukuhlukahluka kwezinto eziphilayo kanye nezilwane zasolwandle, okugcine kuba yingxenye yochungechunge lokudla.
Ososayensi nabacwaningi bahlala besebenza ekusetshenzisweni kabusha kwepulasitiki, kodwa noma kunjalo, amazinga okusetshenziswa kabusha aphansi. Ngezansi kushiwo eminye yemininingwane nezibalo zokuthi ukusetshenziswa kwepulasitiki kube nomthelela kanjani ekudaleni inkinga yokuphathwa kwemfucuza.
Ukupakisha amaphepha kuvame ukubhekwa njengesixazululo esiqhubekayo sokupakisha izinto ezidliwayo nezithunyelwayo. Kulesi sigaba sendatshana, sizohlola ukuthi yini eyenza kube yisisombululo esiqhubekayo senkinga yokupakisha nokuthi yiziphi izinkinga abanazo.
Izinto zokusetshenziswa zokupakisha amaphepha zivame ukuvela emithonjeni yezinto eziphilayo, imithombo efana ne-pulp yokhuni, uqalo, noma i-bagasse. Njengoba izihlahla nezitshalo zikhula ngokumunca i-CO2, lokhu kuphumela ekukhiqizweni okuphansi kwe-net uma izinto zokusetshenziswa zitholakala ezinhlanganweni eziqinisekisayo eziqhubekayo njenge-FSC (Forest Stewardship Council). Abakhiqizi bavame ukukhetha ukusebenzisa uqalo ekupakisheni amaphepha njengoba zikhula ngokushesha ezinyangeni eziyi-6 kuya kweziyi-8 futhi izinga lazo lokumunca ikhabhoni lishesha kakhulu uma liqhathaniswa nokhuni lwendabuko.
Enye yezinzuzo ezibalulekile ezinikezwa ukupakisha amaphepha ngaphezu kokupakisha kwepulasitiki ukuthi isikhathi sokubola kwawo sifushane, futhi izinga lokuphinda usebenzise liphakeme. Iphepha lingabola emavikini ambalwa, futhi emhlabeni jikelele, amazinga okuphinda usebenzise amaphepha aphezulu kakhulu, kanti i-US ifinyelela izinga elicishe libe ngu-68%, ngokusho kwe-American Forest & Paper Association. Ezinye zezinzuzo zifaka:
Enye yezingqinamba ezinkulu ekukhiqizweni kwephepha ukuthi inqubo ngokwesiko idinga amanzi amaningi. Uma kuqhathaniswa nokukhiqizwa kwepulasitiki, ukukhiqiza iphepha kudinga amanzi aphindwe kane kunalawo okukhiqiza ipulasitiki. Kodwa-ke, ngobuchwepheshe obusha, ososayensi nabacwaningi bahlala besebenza ekunciphiseni ukusetshenziswa kwamanzi ekukhiqizweni kwephepha. Lokhu kuthuthukiswa kufaka phakathi ukusetshenziswa kwefayibha ebunjiwe, esebenzisa izinsalela zezolimo ukunciphisa ukugawulwa kwamahlathi nokusetshenziswa kwamanzi. Ngaphezu kwalokho, izimboni zokukhiqiza iphepha manje sezisebenzisa amanzi kabusha, okuye kwaholela ekunciphiseni ukungenisa amanzi ahlanzekile.
Kulesi sigaba salesi sihloko, sizoqhathanisa ithebula phakathi kokupakisha amaphepha nokupakisha kwepulasitiki ukuze kusize ekutholeni isiphetho sokuthi iyiphi indlela yokupakisha engcono kakhulu ekugcineni ukudla kusha futhi kunempilo ngenkathi futhi kuqhubeka isikhathi eside.
Izici | Ukupakisha Iphepha | Ukupakisha kwepulasitiki |
Amandla Okufudumala Komhlaba Wonke | Ngaphansi. Ivuseleleka; ukusetshenziswa kukaphethiloli wezinto zasendulo kungaphansi kuka-~143%. | Okuphakeme. Kususelwa kuphethiloli wezinsalela; ~6kg CO2/kg. |
Izinga Lokusebenzisa Kabusha | Okuphezulu (68-85%). Ama-fibre angasetshenziswa kabusha izikhathi ezingu-5-7. | Kuphansi (9-30%). Kunzima ukuhlukanisa/ukuhlanza. |
Ukubola kwezinto eziphilayo | Kuphezulu. Kubola emavikini/ezinyangeni. | Akukho. Kuhlala iminyaka engaphezu kuka-400. |
Umthelela Wolwandle | Okuncane. Kuwohloka ngokwemvelo. | Ukungcola okukhulu. Okuncane kwepulasitiki. |
Ukukhishwa Kwegesi Ezokuthutha | Iphakeme. Isisindo esisindayo sandisa ukusetshenziswa kukaphethiloli. | Iphansi. Izinto ezilula zigcina uphethiloli. |
Ukuphepha Kwezempilo | Phezulu. Akukho ukuvuza kwe-microplastic. | Ukushisa kukhipha ubuthi/amaplastiki amancane. |
Kukhona i-equation noma ifomula eyaziwa ngokuthi i-equation yomthelela ophelele esetshenziselwa ukubala i-carbon footprint yokukhiqiza umkhiqizo. Lesi sibalo singasetshenziswa ekubaleni i-carbon footprint yokukhiqiza ipulasitiki nephepha, okungasisiza ekuqhathaniseni kwethu ukuze kusisize sinqume ukuthi iyiphi inketho ehlala isikhathi eside.
Ukukhiqiza ipulasitiki engu-1kg kukhiqiza cishe u-6kg wokungcola (isici sokukhishwa komoya). Lesi yisilinganiso esingu-1:6. Ngakho-ke, ukuze kukhiqizwe ipulasitiki engu-1 kg yokupakisha, ukungcola okukhiqizwayo kunesisindo esiphindwe kasithupha kunepulasitiki, okwenza ipulasitiki ibize kakhulu ngokwezinto ezingcolisayo. Ukwenza i-1kg yephepha kudala cishe u-0.5kg (isici sokukhishwa komoya) wokungcola njenge-CO2 . Lokhu kuphansi kakhulu kunepulasitiki ngesisindo esifanayo sezinto.
Izindleko zokulahla okukhulunywe ngazo kulesi sibalo zitshela umphumela odalwe yipulasitiki noma iphepha ngemva kokuba selilahliwe. Izindleko zokulahla iphepha ziphansi kakhulu ngoba lingabola kalula noma liphinde lisetshenziswe. Ngakolunye uhlangothi, ipulasitiki ingahlala ezindaweni zokulahla udoti noma olwandle amakhulu eminyaka, noma lapho ukushiswa kukhipha inani elikhulu lokungcola, okudala izindleko zokulahla eziphezulu.
Ukuthutha ipulasitiki kunegalelo elincane kakhulu ekukhishweni komoya uma kuqhathaniswa nephepha. Ebhokisini elinobukhulu obufanayo, inani elikhulu lepulasitiki lingafakwa, kuyilapho iphepha livame ukuba likhulu futhi lisindayo, okuholela ekutheni kube namayunithi ambalwa angena ebhokisini elifanayo. Isibonelo, usebenzisa ipulasitiki, ungadinga kuphela ipulasitiki engu-10g ukuze ubambe isangweji, kanti ungadinga iphepha elingu-30g. Kodwa-ke, lokhu kuyisithiyo ngoba uma usebenzisa iphepha eliphindwe kathathu kunepulasitiki, ukukhishwa komoya kusephansi kakhulu. Phela, i-Emission Factor yephepha iphansi kakhulu.
Ekupakisheni ukudla, ukusimama akuyona yodwa into ebalulekile. Ukusebenza kahle kubaluleke kakhulu njengokusimama, ngoba uma ukudla kuhlala kusha phakathi nohambo olunzima oluvela ekhishini kuya emnyango, kubhekwa njengokwamukelekayo. Kulesi sigaba sesihloko, sizohlola ukuthi into ngayinye izogcina kanjani ukushisa ngempumelelo, ivimbele ukuvuza, futhi ibekezelele ukuphathwa ukuqinisekisa ukuthi ikhasimende lithola ukudla okuseqophelweni eliphezulu.
Ngokuphathelene nokuqina, ipulasitiki ibilokhu ingcono kunephepha. Kodwa ngokuthuthuka kobuchwepheshe, ukupakishwa kwephepha kuyashesha, okubonisa ukwakhiwa okuthuthukisiwe okuhambisana nokusebenza kwepulasitiki:
Uma kuqhathaniswa nepulasitiki, ukupakishwa kwephepha kunikeza izinketho zokwenza ngokwezifiso ezingcono kakhulu ezinhle kakhulu zokukhangisa kanye nokusebenza okuthuthukisa ulwazi lomsebenzisi. Izici ezibalulekile zifaka:
Ukuze amabhizinisi noma izindawo zokudlela zichume, azidingi nje kuphela ukupakisha okusimeme, kodwa futhi zidinga ukupakisha okushibhile. Nazi ezinye zezinto ezenza ukupakisha amaphepha kushibhile emabhizinisini:
Kulesi sigaba salesi sihloko, sizohlola ukuthi yikuphi ukukhetha kokupakisha phakathi kwepulasitiki nephepha okubonakala kukhethwa ngumthengi bese siphendula isizathu salokho ukuze sikusize wenze ukukhetha okufanele kwebhizinisi lakho.
Ngenxa ye-inthanethi, amakhasimende manje ayazi kangcono ngemiphumela yezemvelo yokusebenzisa iphakheji engazinzile. Amakhasimende manje azimisele ukukhokha okwengeziwe ukuqinisekisa ukuthi athola iphakheji yokudla okudliwayo okunobungani nemvelo, okuboniswa ngokucacile yizitayela:
Ngenxa yemiphumela emibi yokusebenzisa ukupakisha okungazinzile emvelweni, ohulumeni manje sebebeka imithetho efana ne-EU's Packaging and Packaging Waste Regulation (PPWR), ethanda kakhulu iphepha elingasetshenziswa kabusha. Ngesikhathi esifanayo, izinkampani zamukela izitsha zomqalo nephepha ukuze zihlangabezane nezinhloso ze-ESG. Izinsizakalo zokulethwa ezintsha zivivinya ngisho nemikhono yephepha engasetshenziswa kabusha ngezaphulelo zokubuyiselwa.
Isiphetho esithathwe ezigabeni ezingenhla ukuthi ukupakisha amaphepha okwamanje kuyindlela engcono kakhulu etholakalayo yokupakisha okusimeme. Kodwa umbuzo usalokhu: Ingabe ukupakisha amaphepha kusimeme ngokugcwele? Uma impendulo ingucha, kungani-ke, futhi yiziphi izithuthukisi ezenziwayo ngempela ukuze kufezwe ukupakisha ukudla okudliwayo okunobungani nemvelo? Kulesi sigaba sendatshana, sizophendula imibuzo yakho ukuze sikusize wenze ukukhetha okufanele kwebhizinisi lakho.
Enye yezinto ezibangela ubuthakathaka obukhulu obuhambisana namabhokisi ephepha ukuthi asengozini yomswakama. Enye yezinto ezibangela umswakama ohambisana nokulungisa inkinga yomswakama ukusebenzisa ungqimba oluncane lwepulasitiki, kodwa lokho kwenza iphepha lingaphinde lisetshenziswe. Ukuze kulungiswe lokho, isayensi iqhamuke nesisombululo lapho kufuthwa khona i-Aqueous Dispersion Coating ephepheni, elomile, lenze isithiyo esincane kakhulu, esingabonakali esivimba amanzi namafutha ukuthi angangeni. Ukuze kuthuthukiswe ukumelana nomswakama, kusetshenziswa i-Enhanced Fiber Bonding, okwandisa amandla amanzi ekudleni okunzima.
Ukuphinda usebenzise iphepha elimboziwe ngokuvamile kunzima ukuliphinda ulisebenzise, kodwa ngokuthuthuka kwesayensi nobuchwepheshe, manje sekungenzeka ngezinga elithile:
Ukuphela kwento evimbela iphepha ukuthi libizwe ngokuthi isisombululo sokupakisha esihlala isikhathi eside ukuthi lidinga ukugawulwa kwezihlahla, kanti inqubo yokwenza iphepha idinga amanzi amaningi. Ososayensi nabacwaningi manje sebethole ikhambi lokusebenzisa izinsalela zezolimo njengotshani bukakolweni nezinye izinsalela zezitshalo ukunciphisa isidingo se-virgin wood pulp yezinto zokusetshenziswa zephepha. Ngaphezu kwalokho, ososayensi basungule izindlela zokuvuselela lezi zindwangu zezitshalo besebenzisa izinqubo zemishini esikhundleni samanzi. Ngokuthuthuka okwengeziwe kulezi zindlela, singanqoba lezi zingqinamba uma kuqhathaniswa nepulasitiki.
Ekugcineni, ukukhetha kusobala: uma ufuna ukuya ekupakisheni okusimeme, okwamanje, iphepha liyindlela yokupakisha yokudla esimeme kakhulu ongayithola ukuze ulethe ukudla noma udle ukudla. Leli phepha linikeza amabhizinisi okuhle kakhulu: ukusimama kanye nokumelana namafutha kanye nomswakama. Nakuba ipulasitiki ibhekwa njengehlala isikhathi eside, ukungcola kwesikhathi eside ebangela emvelweni akunakunakwa. Ngakho-ke uma ungumnikazi webhizinisi noma indawo yokudlela, beka phambili izinketho zephepha ezivuselelekayo, ezibolayo ukuqinisekisa ukuthi uhlangabezana nezidingo zabathengi futhi unciphise umthelela wakho emvelweni.
Ukuze uthole izixazululo zekhwalithi ephezulu nezinobungani nemvelo emabhokisini, ezitsheni, ezintweni zokusika, emathileyi nasezikhwameni, hlola uhla lwe-Uchampak lokupakisha amaphepha angenziwa ngezifiso ukuze uthuthukise imikhuba yakho eqhubekayo namuhla. Vakashela i- I-Uchampak iwebhusayithi ukuze ufunde kabanzi.
Umsebenzi wethu ukuthi ube yibhizinisi elineminyaka engu-100 ngomlando omude. Sikholwa ukuthi u-Uchampak uzoba umlingani wakho owayethembekile kakhulu.
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