On the use of plastic precursors for preparation of activated carbons and their evaluation in CO2 capture for biogas upgrading: a review Pérez Huertas, Salvador Calero De Hoces, Francisca Mónica Ligero Campo, Ana Pérez Muñoz, Antonio Terpiłowski, Konrad Martín Lara, María Ángeles Activated carbons Biogas Upgrading Char CO2 capture Plastic waste Pyrolysis Acknowledgements This paper has received funds from the project PID2019.108826RB. I00 financied by MCIN/ AEI /10.13039/501100011033. Funding for open access charge: Universidad de Granada / CBUA. Our gratitute to Prof. Fernando Gonz ́alez-Caballero for his support and fruitful com- ments during the preparation of the manuscript. In circular economy, useful plastic materials are kept in circulation as opposed to being landfilled, incinerated, or leaked into the natural environment. Pyrolysis is a chemical recycling technique useful for unrecyclable plastic wastes that produce gas, liquid (oil), and solid (char) products. Although the pyrolysis technique has been extensively studied and there are several installations applying it on the industrial scale, no commercial applications for the solid product have been found yet. In this scenario, the use of plastic-based char for the biogas upgrading may be a sustainable way to transform the solid product of pyrolysis into a particularly beneficial material. This paper reviews the preparation and main parameters of the processes affecting the final textural properties of the plastic-based activated carbons. Moreover, the application of those materials for the CO2 capture in the processes of biogas upgrading is largely discussed. 2023-03-06T08:16:15Z 2023-03-06T08:16:15Z 2023-03 journal article S. Pérez-Huertas et al. On the use of plastic precursors for preparation of activated carbons and their evaluation in CO2 capture for biogas upgrading: a review. Waste Management 161 (2023) 116–141 [https://doi.org/10.1016/j.wasman.2023.02.022] https://hdl.handle.net/10481/80410 https://doi.org/10.1016/j.wasman.2023.02.022 eng http://creativecommons.org/licenses/by-nc-nd/4.0/ open access Attribution-NonCommercial-NoDerivatives 4.0 Internacional Elsevier