A review on catalytic CO₂ pyrolysis of organic wastes to high-value products

As an alternative to conventional pyrolysis, CO₂-assisted pyrolysis is ideal for treating organic waste materials such as plant biomass, animal manure, domestic and municipal wastes as the usage of CO₂ facilitates the decomposition of materials and inhibits the formation of many harmful chemical compounds. The application of catalysts in CO₂ pyrolysis has been viewed as a way to valorise waste on a large scale. This article provides insight into the advantages of using CO₂ and catalysts in pyrolysis and a list of catalysts currently used in CO₂ pyrolysis. The main purpose of this review is to summarise the findings of recent analyses of catalytic CO₂ pyrolysis of wastes. The study also discusses the different procedures involved in catalyst preparation and provides a broad review of the effects of catalytic CO₂ pyrolysis on pyrolysis products’ quantity and quality. The article concludes by evaluating the competency level of catalytic CO₂ pyrolysis technology and providing an overview of the technique's current challenges and future recommendations. The review is in line with fostering the usage of CO₂ to meet CO₂ emission regulations outlined by the 2015 Paris Agreement.

Other Information

Published in: Fuel
License: http://creativecommons.org/licenses/by/4.0/
See article on publisher's website: https://dx.doi.org/10.1016/j.fuel.2022.127073