Thermo-chemical disposal of plastic waste from end-of-life vehicles (ELVs) using CO

Jung-Hun KIM, Sungyup JUNG, Taewoo LEE, Yiu Fai TSANG, Eilhann E. KWON

Research output: Contribution to journalArticlespeer-review


Thesource reduction of plastic waste could be an effective means to attenuatehazardous environmental problems triggered by microplastics. Energy recoveryfrom plastic waste through thermochemical processes is a desirable valorizationroute. To realize the grand challenges, plastic waste derived from end-of-lifevehicles (ELVs) was pyrolyzed. To propose a greener feature, CO was introduced as a mediator to maximize carbonallocation to the gaseous pyrogenic product (syngas) by CO reduction to CO and concurrent oxidation of volatilematter (VM) that was evolved from the thermolysis of plastic waste. As such,fundamental and systematic works were conducted to delineate the CO effects on conversion of VMs. This study experimentallyproved that CO promotes thermal cracking in line with C–C bondscissions. However, the reaction rate for the conversion of CO and VM into CO via homogeneous reaction was not fast.Therefore, a Ni-based catalyst was employed to accelerate the reaction rate.However, there was coke deposition on the catalyst surface. To prevent cokeformation, we chose a method to enhance CO reduction to CO and the oxidation of VM. Thus, threebimetallic catalysts were used for catalytic pyrolysis. Among the threebimetallic catalysts, Rh₀.₁Ni/SiO was the most effective. Copyright © 2023 Elsevier Ltd. All rights reserved.

Original languageEnglish
Article number130136
Early online date27 Dec 2023
Publication statusPublished - Mar 2024


Kim, J.-H., Jung, S., Lee, T., Tsang, Y. F., & Kwon, E. E. (2024). Thermo-chemical disposal of plastic waste from end-of-life vehicles (ELVs) using CO₂. Energy, 290, Article 130136.


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