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Recent Advances on Waste Plastic Thermal Pyrolysis: A Critical Overview

Yansaneh, Osman Y.; Zein, Sharif H.


Osman Y. Yansaneh

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Dr Sharif Zein
Senior Fellow HEA| Reader in Biorefinery Processes and Reaction Engineering| PI of Bioref Group


Post-consumer plastic management, otherwise termed waste plastic (WP) management, is a great challenge in today’s world, mainly because of its characteristic biodegradation properties. The quantity of waste plastics correspondingly increases with the increase in demand for plastic use. Research has shown that this demand increases yearly. Most of these waste plastics include high-density polyethylene (HDPE), low-density polyethylene (LDPE), polyethylene terephthalate (PET) and polystyrene (PS). Potentially, these wastes are a wealth, and studies have explored that pyrolysis is a reputable mechanism to accomplish this. In this critical review, an extensive investigation on waste plastics thermal pyrolysis (WPTP) is carried out. The factors that affect the product’s yield and selectivity are discussed, and a comparative quality guarantee of WPTP is examined. This paper presents an assurance into the current findings of WPTP and reveals some common gaps and misconceptions surrounding this field, which are recommendable towards the support of further research work. The significant role of co-pyrolysis of plastics with biomass in this field is also emphasised, and a glimpse into the influence of mixed waste plastics in pyrolysis is presented.


Yansaneh, O. Y., & Zein, S. H. (2022). Recent Advances on Waste Plastic Thermal Pyrolysis: A Critical Overview. Processes, 10(2), Article 332.

Journal Article Type Review
Acceptance Date Feb 2, 2022
Online Publication Date Feb 9, 2022
Publication Date 2022-02
Deposit Date Apr 5, 2022
Publicly Available Date Oct 27, 2022
Journal Processes
Electronic ISSN 2227-9717
Publisher MDPI
Peer Reviewed Peer Reviewed
Volume 10
Issue 2
Article Number 332
Keywords Detailed review; Waste plastics; Environmental pollution; Thermal pyrolysis; Pyrolysis factors; Future research needs
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Copyright Statement
Copyright: © 2022 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license : (

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