Kwemakore mazhinji, nzira huru yekudzokorodza mapurasitiki ndeye mechanical recycling, iyo inowanzonyungudutsa zvimedu zvepurasitiki uye inozviita zvidimbu zvezvigadzirwa zvitsva.Kunyangwe zvinhu izvi zvichiri zvakafanana mapolymer epurasitiki, nguva yavo yekudzokorodza ishoma, uye nzira iyi inotsamira zvakanyanya pamafuta emafuta.
Parizvino, mapurasitiki emarara muChina anonyanya kusanganisira firimu repurasitiki, waya yepurasitiki uye zvinhu zvakarukwa, mapurasitiki ane furo, mabhokisi epurasitiki ekurongedza uye midziyo, zvigadzirwa zvepurasitiki zvemazuva ese (mabhodhoro epurasitiki, pombi fittings,midziyo yezvokudya, nezvimwewo), mabhegi epurasitiki uye mafirimu epurasitiki ekurima.Mukuwedzera, kushandiswa kwegore negore kwemapurasitiki emotokarimuChina yasvika 400000 matani, uye kushandiswa kwepagore mapurasitiki nokudamidziyo yemagetsiuye midziyo yemumba yasvika matani anopfuura miriyoni imwe.Izvi zvigadzirwa zvave imwe yeakakosha masosi emarara epurasitiki mushure mekuraswa.
Mazuva ano, kunyanya kutariswa kunobhadharwa kupora kwemakemikari.Kudzokorodza kemikari kunogona kushandura mapurasitiki kuita mafuta, zvigadzirwa zvepetrochemical zvigadzirwa uye kunyange monomers.Iyo haingogone kudzokorodza mamwe mapurasitiki emarara, asi zvakare kuderedza kutsamira pamafuta efossil.Nepo kuchengetedza nharaunda nekugadzirisa dambudziko rekusvibiswa kwepurasitiki, zvinogona zvakare kuderedza kuburitsa kabhoni.
Mune akawanda epurasitiki makemikari kudzoreredza matekinoroji, pyrolysis tekinoroji yagara iine chinzvimbo chinotungamira.Mumwedzi ichangopfuura, nzvimbo dzekugadzira oiri dzepyrolysis muEurope neAmerica dzakanyura kumativi ese eAtlantic.Mapurojekiti matsva ane chekuita nekugadzira resin kudzoreredza tekinoroji ari kusimukira, ayo mana ari mapurojekiti epolyethylene terephthalate (PET), ese ari muFrance.
Kuenzaniswa nemuchina kudzoreredza, imwe yemabhenefiti akakosha ekudzoreredza kemikari ndeyekuti inogona kuwana mhando yepolymer yepakutanga uye chiyero chepamusoro chepurasitiki chekudzoreredza.Nekudaro, kunyangwe kudzoreredzwa kwemakemikari kunogona kubatsira hupfumi hwepurasitiki, imwe neimwe nzira ine zvikanganiso zvayo kana ichizoiswa pamwero mukuru.
Plastiki tsvina haisi dambudziko rekusvibiswa kwepasi rose chete, asiwo ivhu rakasvibirira rine yakakwira kabhoni, mutengo wakaderera uye unogona kuwanikwa pasi rose.Upfumi hwedenderedzwa hwavewo hutungamiriri hwemangwana hweindasitiri yepurasitiki.Nekusimudzira tekinoroji yecatalytic, kupora kwemakemikari kunoratidza tarisiro yakanaka yehupfumi.
Nguva yekutumira: Aug-16-2022