| Sumario: | The life cycle of plastic is very short and the treatment plan for its waste is scarce. It is there-fore clear that we are facing one of the greatest socio-economic, environmental and health problems of our time. This article reviews the general situation of the plastics market, where in previous decades plastic pro-duction has increased drastically, and discusses the two main associated problems, (i) dependence on fossil fuels (moving away from decarbonization) and the consequent emission of greenhouse gases, and (ii) the production of waste, the management of which is disastrous. The main problem is the generation of plastic waste, since, for example, by 2030 there will be 280 million tons of plastics in landfills and seas, incorporat-ing them into the food chain, as there is no strategy to deal with the waste generated. As presented in the pa-per, of the plastic produced only 30% is recycled, 49.5 % is incinerated and the remaining 23.5% is sent di-rectly to landfills. Therefore, the circular economy will be the only way out of this crossroads, preventing plastic from becoming waste. Thus, interest in new strategies for the recovery of plastics is being encour-aged. Current research has two main lines: thermochemical processes, pyrolysis and gasification, on the one hand, and cracking and hydrocracking, on the other. This paper reviews the latest research that has been carried out using these technologies in reference to the valorization of plastics.; Plastikoaren erabilera-zikloa oso laburra da eta, haren hondakinak tratatzeko plana, eskasa. Bistan da, beraz, gure garaiko arazo sozio-ekonomiko zein ingurumen- eta osasun-arazo handienetako baten aurrean gaudela. Artikulu honetan begiratu orokorra eman zaio plastikoen merkatuari, non aurreko hamarkadetan plastiko-produkzioa izugarri handitu den. Merkatu horri lotutako bi arazo nagusiak jorratzen dira lan honetan, alegia, berotegi-efektuko gasen emisioa plastikoen ekoizpenean eta erregai fosilekiko mendekotasuna (deskarbonizaziotik aldenduz) eta kudeaketa negargarria duten hondakinen ekoizpena. Plastiko-hondakinen sorrera da arazo nagusia; izan ere, estatistikei kasu eginez gero, 2030 urterako 280 milioi tona plastiko egongo omen dira zabortegi zein itsasoetan, elikadura-katean sarturik, ez baitago sortutako hondakinei aurre egiteko estrategiarik. Lan honetan aurkezten den legez, ekoitzitako plastikotik % 30 bakarrik birziklatzen da, % 49,5 erraustu eta gainerako % 23,5 zabortegira bidaltzen da zuzenean. Beraz, ekonomia zirkularra izango omen da bidegurutze honetatik irteteko bide bakarra, alegia, plastikoa hondakin bihurtzeari uztea. Horiek horrela, handitu egin da interesa plastikoak balioberritzeko estrategia berrien inguruan. Egungo ikerkuntzak bi ildo nagusi erakusten ditu: batetik, prozesu termokimikoak, pirolisia eta gasifikazioa; eta bestetik, krakeoa eta hidrokrakeoa. Lan honetan, plastikoak balioberritzeko teknologia horiek erabiltzen dituzten adibide batzuk azaltzen dira.
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