Waste Management and Resource Recovery (WeResCue) Group, Chemical Engineering Studies, College of Engineering, Universiti Teknologi MARA, Cawangan Pulau Pinang, 13500 Permatang Pauh, Penang, Malaysia.
Sci Total Environ. 2023 Jun 15;877:162719. doi: 10.1016/j.scitotenv.2023.162719. Epub 2023 Mar 16.
Turning plastic waste into plastic oil by pyrolysis is one of the promising techniques to eradicate plastic waste pollution and accelerate the circular economy of plastic materials. Plastic waste is an attractive pyrolysis feedstock for plastic oil production owing to its favorable chemical properties of proximate analysis, ultimate analysis, and heating value other than its abundant availability. Despite the exponential growth of scientific output from 2015 to 2022, a vast majority of the current review articles cover the pyrolysis of plastic waste into a series of fuels and value-added products, and up-to-date reviews exclusively on plastic oil production from pyrolysis are relatively scarce. In light of this void in the current review articles, this review attempts to provide an up-to-date overview of plastic waste as pyrolysis feedstock for plastic oil production. A particular emphasis is placed on the common types of plastic as primary sources of plastic pollution, the characteristics (proximate analysis, ultimate analysis, hydrogen/carbon ratio, heating value, and degradation temperature) of various plastic wastes and their potential as pyrolysis feedstock, and the pyrolysis systems (reactor type and heating method) and conditions (temperature, heating rate, residence time, pressure, particle size, reaction atmosphere, catalyst and its operation modes, and single and mixed plastic wastes) used in plastic waste pyrolysis for plastic oil production. The characteristics of plastic oil from pyrolysis in terms of physical properties and chemical composition are also outlined and discussed. The major challenges and future prospects for the large-scale production of plastic oil from pyrolysis are also addressed.
通过热解将塑料废物转化为塑料油是消除塑料废物污染并加速塑料材料循环经济的有前途的技术之一。由于其较近分析、最终分析和热值等有利的化学性质以及丰富的可用性，塑料废物是生产塑料油的有吸引力的热解原料。尽管 2015 年至 2022 年科学产出呈指数级增长，但目前大多数综述文章都涵盖了塑料废物热解为一系列燃料和增值产品，而专门关于热解生产塑料油的最新综述相对较少。鉴于当前综述文章中的这一空白，本综述试图提供最新的概述，介绍塑料废物作为生产塑料油的热解原料。特别强调常见类型的塑料作为塑料污染的主要来源、各种塑料废物的特性（较近分析、最终分析、氢/碳比、热值和降解温度）及其作为热解原料的潜力，以及用于生产塑料油的热解系统（反应器类型和加热方式）和条件（温度、加热速率、停留时间、压力、粒径、反应气氛、催化剂及其操作模式以及单一和混合塑料废物）。还概述和讨论了热解塑料油在物理性质和化学成分方面的特点。还讨论了大规模生产热解塑料油的主要挑战和未来前景。
