Kwiminyaka emininzi, eyona ndlela iphambili yokubuyisela iiplastiki kukuphinda kusetyenziswe oomatshini, okuhlala kunyibilikisa amaqhekeza eplastiki kwaye kubenze babe ngamasuntswana eemveliso ezintsha.Nangona ezi mathiriyeli ziseziipolima zeplastiki ezifanayo, amaxesha azo okurisayikilishwa anqongophele, kwaye le ndlela ixhomekeke kakhulu kumafutha efosili.
Okwangoku, iiplastiki zenkunkuma e-China ziquka ifilimu yeplastiki, ucingo lweplastiki kunye nempahla ephothiweyo, iiplastiki ezinogwebu, iibhokisi zokupakisha zeplastiki kunye nezikhongozeli, iimveliso zeplastiki ezisetyenziswa mihla le (iibhotile zeplastiki, izifakelo zombhobho,izitya zokutya, njl.), iingxowa zeplastiki kunye neefilimu zeplastiki zezolimo.Ukongeza, ukusetyenziswa konyaka kweiiplastiki zeemotoe China ifikelele 400000 iitoni, kunye nokusetyenziswa ngonyaka iiplastiki ngenxaizixhobo zombanekunye nezixhobo zendlu zifikelele ngaphezu kwe-1 yezigidi zeetoni.Ezi mveliso ziye zaba ngomnye wemithombo ebalulekileyo yenkunkuma yeplastiki emva kokuchithwa.
Kule mihla, ingqwalasela engakumbi ihlawulwa ekubuyiselweni kweekhemikhali.Ukurisayikilisha kweekhemikhali kunokuguqula iiplastiki zibe ngamafutha, imathiriyeli ekrwada yeemveliso zepetrochemical kunye neemonomers.Ayinakuphinda isetyenziselwe inkunkuma eninzi kuphela, kodwa ikwanciphisa ukuxhomekeka kumafutha efosili.Ngelixa ukhusela okusingqongileyo kunye nokusombulula ingxaki yongcoliseko lweplastiki, kunokunciphisa ukukhutshwa kwekhabhoni.
Kwiitekhnoloji ezininzi zeplastiki zokubuyisela iikhemikhali, itekhnoloji yepyrolysis ibisoloko ikwindawo ehamba phambili.Kwiinyanga zamva nje, izibonelelo ze-pyrolysis zokuvelisa i-oyile eYurophu naseMelika ziye zanda kumacala omabini eAtlantiki.Iiprojekthi ezintsha ezinxulumene neteknoloji yokubuyisela i-resin yokwenziwa kwakhona ziyaphuhliswa, kuzo ezine iiprojekthi ze-polyethylene terephthalate (PET), zonke ezifumaneka eFransi.
Xa kuthelekiswa nokubuyiswa komatshini, enye yeenzuzo ezibalulekileyo zokubuyiswa kweekhemikhali kukuba inokufumana umgangatho wepolymer yasekuqaleni kunye nezinga eliphezulu lokubuyisela iplastiki.Nangona kunjalo, nangona ukubuyiswa kweekhemikhali kunokunceda ukuphinda kusetyenziswe uqoqosho lweplastiki, indlela nganye ineziphene zayo ukuba iya kusetyenziswa kwinqanaba elikhulu.
Inkunkuma yePlastiki ayiyona nje ingxaki yongcoliseko lwehlabathi, kodwa iphinde ibe yimathiriyeli ekrwada enomxholo ophezulu wekhabhoni, ixabiso eliphantsi kwaye inokufunyanwa kwihlabathi jikelele.Uqoqosho lwesetyhula luye lwaba lukhokelo lophuhliso lwexesha elizayo loshishino lweplastiki.Ngokukhuthazwa kobuchwepheshe be-catalytic, ukubuyiswa kweekhemikhali kubonisa ithemba elihle loqoqosho.
Ixesha lokuposa: Aug-16-2022