{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,22]],"date-time":"2026-09-22T20:23:47Z","timestamp":1790108627870,"version":"4.0.1"},"reference-count":62,"publisher":"MDPI AG","issue":"1","license":[{"start":{"date-parts":[[2024,12,29]],"date-time":"2024-12-29T00:00:00Z","timestamp":1735430400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"FAPERJ","award":["FAPERJ CNE E-6\/200.911\/2021"],"award-info":[{"award-number":["FAPERJ CNE E-6\/200.911\/2021"]}]},{"name":"FAPERJ","award":["1A 301873\/2019-4"],"award-info":[{"award-number":["1A 301873\/2019-4"]}]},{"name":"FAPERJ","award":["SEI-260003\/001178\/2020"],"award-info":[{"award-number":["SEI-260003\/001178\/2020"]}]},{"DOI":"10.13039\/501100003593","name":"CNPq","doi-asserted-by":"publisher","award":["FAPERJ CNE E-6\/200.911\/2021"],"award-info":[{"award-number":["FAPERJ CNE E-6\/200.911\/2021"]}],"id":[{"id":"10.13039\/501100003593","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100003593","name":"CNPq","doi-asserted-by":"publisher","award":["1A 301873\/2019-4"],"award-info":[{"award-number":["1A 301873\/2019-4"]}],"id":[{"id":"10.13039\/501100003593","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100003593","name":"CNPq","doi-asserted-by":"publisher","award":["SEI-260003\/001178\/2020"],"award-info":[{"award-number":["SEI-260003\/001178\/2020"]}],"id":[{"id":"10.13039\/501100003593","id-type":"DOI","asserted-by":"publisher"}]},{"name":"FAPERJ","award":["FAPERJ CNE E-6\/200.911\/2021"],"award-info":[{"award-number":["FAPERJ CNE E-6\/200.911\/2021"]}]},{"name":"FAPERJ","award":["1A 301873\/2019-4"],"award-info":[{"award-number":["1A 301873\/2019-4"]}]},{"name":"FAPERJ","award":["SEI-260003\/001178\/2020"],"award-info":[{"award-number":["SEI-260003\/001178\/2020"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Molecules"],"abstract":"<jats:p>This paper highlights the complexity and urgency of addressing plastic pollution, drawing attention to the environmental challenges posed by improperly discarded plastics. Petroleum-based plastic polymers, with their remarkable range of physical properties, have revolutionized industries worldwide. Their versatility\u2014from flexible to rigid and hydrophilic to hydrophobic\u2014has fueled an ever-growing demand. However, their versatility has also contributed to a massive global waste problem as plastics pervade virtually every ecosystem, from the depths of oceans to the most remote terrestrial landscapes. Plastic pollution manifests not just as visible waste\u2014such as fishing nets, bottles, and garbage bags\u2014but also as microplastics, infiltrating food chains and freshwater sources. This crisis is exacerbated by the unsustainable linear model of plastic production and consumption, which prioritizes convenience over long-term environmental health. The mismanagement of plastic waste not only pollutes ecosystems but also releases greenhouse gases like carbon dioxide during degradation and incineration, thereby complicating efforts to achieve global climate and sustainability goals. Given that mechanical recycling only addresses a fraction of macroplastics, innovative approaches are needed to improve this process. Methods like pyrolysis and hydrogenolysis offer promising solutions by enabling the chemical transformation and depolymerization of plastics into reusable materials or valuable chemical feedstocks. These advanced recycling methods can support a circular economy by reducing waste and creating high-value products. In this article, the focus on pyrolysis and hydrogenolysis underscores the need to move beyond traditional recycling. These methods exemplify the potential for science and technology to mitigate plastic pollution while aligning with sustainability objectives. Recent advances in the pyrolysis and hydrogenolysis of polyolefins focus on their potential for advanced recycling, breaking down plastics at a molecular level to create feedstocks for new products or fuels. Pyrolysis produces pyrolysis oil and syngas, with applications in renewable energy and chemicals. However, some challenges of this process include scalability, feedstock variety, and standardization, as well as environmental concerns about emissions. Companies like Shell and ExxonMobil are investing heavily to overcome these barriers and improve recycling efficiencies. By leveraging these transformative strategies, we can reimagine the lifecycle of plastics and address one of the most pressing environmental challenges of our time. This review updates the knowledge of the fields of pyrolysis and hydrogenolysis of plastics derived from polyolefins based on the most recent works available in the literature, highlighting the techniques used, the types of products obtained, and the highest yields.<\/jats:p>","DOI":"10.3390\/molecules30010087","type":"journal-article","created":{"date-parts":[[2025,1,1]],"date-time":"2025-01-01T14:35:42Z","timestamp":1735742142000},"page":"87","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":20,"title":["Recent Progress in Polyolefin Plastic: Polyethylene and Polypropylene Transformation and Depolymerization Techniques"],"prefix":"10.3390","volume":"30","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-9008-058X","authenticated-orcid":false,"given":"Ac\u00e1cio Silva","family":"de Souza","sequence":"first","affiliation":[{"name":"Programa de P\u00f3s-Gradua\u00e7\u00e3o em Ci\u00eancias Aplicadas a Produtos para a Sa\u00fade, Laborat\u00f3rio de Inova\u00e7\u00e3o em Qu\u00edmica e Tecnologia Farmac\u00eautica, Faculdade de Farm\u00e1cia, Universidade Federal Fluminense, Rua Doutor Mario Vianna, 523, Santa Rosa, Niter\u00f3i 24241-000, RJ, Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0640-5079","authenticated-orcid":false,"given":"Patricia Garcia","family":"Ferreira","sequence":"additional","affiliation":[{"name":"Programa de P\u00f3s-Gradua\u00e7\u00e3o em Ci\u00eancias Aplicadas a Produtos para a Sa\u00fade, Laborat\u00f3rio de Inova\u00e7\u00e3o em Qu\u00edmica e Tecnologia Farmac\u00eautica, Faculdade de Farm\u00e1cia, Universidade Federal Fluminense, Rua Doutor Mario Vianna, 523, Santa Rosa, Niter\u00f3i 24241-000, RJ, Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Iva Souza","family":"de Jesus","sequence":"additional","affiliation":[{"name":"Programa de P\u00f3s-Gradua\u00e7\u00e3o em Ci\u00eancias Aplicadas a Produtos para a Sa\u00fade, Laborat\u00f3rio de Inova\u00e7\u00e3o em Qu\u00edmica e Tecnologia Farmac\u00eautica, Faculdade de Farm\u00e1cia, Universidade Federal Fluminense, Rua Doutor Mario Vianna, 523, Santa Rosa, Niter\u00f3i 24241-000, RJ, Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Rafael Portugal Rizzo Franco","family":"de Oliveira","sequence":"additional","affiliation":[{"name":"Programa de P\u00f3s-Gradua\u00e7\u00e3o em Ci\u00eancias Aplicadas a Produtos para a Sa\u00fade, Laborat\u00f3rio de Inova\u00e7\u00e3o em Qu\u00edmica e Tecnologia Farmac\u00eautica, Faculdade de Farm\u00e1cia, Universidade Federal Fluminense, Rua Doutor Mario Vianna, 523, Santa Rosa, Niter\u00f3i 24241-000, RJ, Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Alcione Silva","family":"de Carvalho","sequence":"additional","affiliation":[{"name":"Programa de P\u00f3s-Gradua\u00e7\u00e3o em Ci\u00eancias Aplicadas a Produtos para a Sa\u00fade, Laborat\u00f3rio de Inova\u00e7\u00e3o em Qu\u00edmica e Tecnologia Farmac\u00eautica, Faculdade de Farm\u00e1cia, Universidade Federal Fluminense, Rua Doutor Mario Vianna, 523, Santa Rosa, Niter\u00f3i 24241-000, RJ, Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Debora Omena","family":"Futuro","sequence":"additional","affiliation":[{"name":"Programa de P\u00f3s-Gradua\u00e7\u00e3o em Ci\u00eancias Aplicadas a Produtos para a Sa\u00fade, Laborat\u00f3rio de Inova\u00e7\u00e3o em Qu\u00edmica e Tecnologia Farmac\u00eautica, Faculdade de Farm\u00e1cia, Universidade Federal Fluminense, Rua Doutor Mario Vianna, 523, Santa Rosa, Niter\u00f3i 24241-000, RJ, Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2166-766X","authenticated-orcid":false,"given":"Vitor Francisco","family":"Ferreira","sequence":"additional","affiliation":[{"name":"Programa de P\u00f3s-Gradua\u00e7\u00e3o em Ci\u00eancias Aplicadas a Produtos para a Sa\u00fade, Laborat\u00f3rio de Inova\u00e7\u00e3o em Qu\u00edmica e Tecnologia Farmac\u00eautica, Faculdade de Farm\u00e1cia, Universidade Federal Fluminense, Rua Doutor Mario Vianna, 523, Santa Rosa, Niter\u00f3i 24241-000, RJ, Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2024,12,29]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"138708","DOI":"10.1016\/j.jclepro.2023.138708","article-title":"Emerging technologies and sustainable strategies for municipal solid waste valorization: Challenges of circular economy implementtion","volume":"423","author":"Ambaye","year":"2023","journal-title":"J. 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