Karimi Estahbanati M R, Kong Xin Ying, Eslami Ali, Soo Han Sen
Centre Eau Terre Environnement (ETE), Institut National de la recherche scientifique (INRS), 490 rue de la Couronne, Québec, QC G1K 9A9, Canada.
Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore, 21 Nanyang Link, Singapore, 637371, Singapore.
ChemSusChem. 2021 Oct 5;14(19):4152-4166. doi: 10.1002/cssc.202100874. Epub 2021 Jun 17.
The management of plastics waste is one of the most urgent and significant global problems now. Historically, waste plastics have been predominantly discarded, mechanically recycled, or incinerated for energy production. However, these approaches typically relied on thermal processes like conventional pyrolysis, which are energy-intensive and unsustainable. In this Minireview, some of the latest advances and future trends in the chemical upcycling of waste plastics by photocatalytic, electrolytic, and microwave-assisted pyrolysis processes are discussed as more environmentally friendly alternatives to conventional thermal reactions. We highlight how the transformation of different types of plastics waste by exploiting alternative energy sources can generate value-added products such as fuels (H and other carbon-containing small molecules), chemical feedstocks, and newly functionalized polymers, which can contribute to a more sustainable and circular economy.
塑料垃圾的管理是当前全球最紧迫且重要的问题之一。从历史上看，废弃塑料主要被丢弃、进行机械回收或焚烧以生产能源。然而，这些方法通常依赖于传统热解等热过程，这些过程能源密集且不可持续。在这篇综述中，讨论了光催化、电解和微波辅助热解过程对废塑料进行化学升级回收的一些最新进展和未来趋势，作为传统热反应更环保的替代方法。我们强调了如何通过利用替代能源将不同类型的塑料垃圾转化为增值产品，如燃料（氢气和其他含碳小分子）、化学原料和新功能化聚合物，这有助于实现更可持续的循环经济。
