Recovery of chemicals and energy through thermo-chemical processing of plastic waste

IF 32 1区工程技术 Q1 ENERGY & FUELS

Progress in Energy and Combustion Science Pub Date : 2025-01-16 DOI:10.1016/j.pecs.2025.101219

Taewoo Lee , Dohee Kwon , Sangyoon Lee , Youkwan Kim , Jee Young Kim , Hocheol Song , Sungyup Jung , Jechan Lee , Yiu Fai Tsang , Ki-Hyun Kim , Eilhann E. Kwon

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引用次数: 0

Abstract

To mitigate the various socioeconomic/environmental consequences associated with plastic waste, it is crucial to adopt strategic measures aimed at source reduction. In this regard, the thermo-chemical approach is a promising technical option to realize this objective within the framework of the circular economy. Such approach involves transforming plastic waste into chemicals/fuels, which contributes to the build-up of a more sustainable and resource-efficient platform. Precise control over yield and selectivity towards target chemicals (monomers, light olefins, and benzene, toluene, ethylbenzene, and xylene isomers (BTEXs)) and fuels (transportation fuels and syngas) is achievable by manipulating operating parameters for the thermo-chemical platform despite the possibly marked influence of the waste composition on product distribution. This review aims to delineate a technically viable pathway of the thermo-chemical approach with the discussion on the physico-chemical properties and compositional characteristics of plastics, technical alternatives for their recycling, and the associated environmental risks (improper disposal practices including mismanagement, landfilling, and incineration). This review helps open a new path for the development of a strategic technical approach within thermo-chemical processing to integrate different facets of plastic waste recycling. Thus, it will contribute to the realization of a closed-loop circular economy within the plastic value chain by focusing on thermo-chemical recycling of plastic waste.

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通过塑料废物的热化学处理回收化学物质和能源

为了减轻与塑料废物有关的各种社会经济/环境后果，采取旨在减少来源的战略措施至关重要。在这方面，热化学方法是在循环经济框架内实现这一目标的有前途的技术选择。这种方法包括将塑料废物转化为化学品/燃料，这有助于建立一个更可持续、更节约资源的平台。通过操纵热化学平台的操作参数，可以精确控制目标化学品（单体、轻烯烃、苯、甲苯、乙苯和二甲苯异构体（btex））和燃料（运输燃料和合成气）的产率和选择性，尽管废物组成可能对产品分布产生显著影响。本文旨在通过讨论塑料的物理化学性质和组成特征、塑料回收的技术替代方案以及相关的环境风险（处置不当的做法，包括管理不善、填埋和焚烧），描绘一条技术上可行的热化学方法途径。这篇综述有助于为热化学处理中的战略技术方法的发展开辟一条新的道路，以整合塑料废物回收的不同方面。因此，它将通过专注于塑料废物的热化学回收，有助于实现塑料价值链内的闭环循环经济。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Progress in Energy and Combustion Science 工程技术-工程：化工

CiteScore

59.30

自引率

0.70%

发文量

审稿时长

3 months

期刊介绍： Progress in Energy and Combustion Science (PECS) publishes review articles covering all aspects of energy and combustion science. These articles offer a comprehensive, in-depth overview, evaluation, and discussion of specific topics. Given the importance of climate change and energy conservation, efficient combustion of fossil fuels and the development of sustainable energy systems are emphasized. Environmental protection requires limiting pollutants, including greenhouse gases, emitted from combustion and other energy-intensive systems. Additionally, combustion plays a vital role in process technology and materials science. PECS features articles authored by internationally recognized experts in combustion, flames, fuel science and technology, and sustainable energy solutions. Each volume includes specially commissioned review articles providing orderly and concise surveys and scientific discussions on various aspects of combustion and energy. While not overly lengthy, these articles allow authors to thoroughly and comprehensively explore their subjects. They serve as valuable resources for researchers seeking knowledge beyond their own fields and for students and engineers in government and industrial research seeking comprehensive reviews and practical solutions.