Nyakuma, Bemgba BevanAjibade, Samuel-Soma M.Adebayo, Victor B.Alkali, HabibOtitolaiye, Victor OlabodeAudu, Jemilatu OmuwaBashir, Faizah MohammedDodo, Yakubu AminuMahmoud, Abubakar SadiqOladokun, Olagoke2023-10-032023-10-0320221729-44282309-8589https://hdl.handle.net/11363/5725https://doi.org/The objective of this study is to examine the potential product yields and energy recovery of maize cobs (MC) through carbon dioxide-assisted torrefaction using thermogravimetric analysis (TGA). The CO2-assisted torrefaction of MC was performed from 240 °C to 300 °C (? 30 °C) for the residence time of 30 minutes based on the selected non-isothermal/isothermal heating programme of the TGA. Furthermore, the physicochemical, microstructure and mineral characteristics of MC were examined. The results showed that the CO2-torrefaction of MC resulted in mass loss (ML) ranging from 18.45% to 55.17%, which resulted in the mass yield (MY) ranging from 81.55% to 44.83%. The HHV of the solid product was in the range from 22.55 MJ/kg to 26 MJ/kg, which indicates the CO2-torrefaction process enhanced the energy content of MC by 40% – 60%. In conclusion, the findings showed that the CO2 torrefaction is a practical, sustainable, and cost-effective approach for the valorisation of MC into a clean solid biofuel for enhanced energy recovery.eninfo:eu-repo/semantics/openAccessAttribution-NonCommercial-NoDerivs 3.0 United StatesCarbon dioxideTorrefactionMaize CobsThermogravimetryEnergy RecoveryArticle231162410.15330/pcss.23.1.16-242-s2.0-85128677905Q4WOS:000782647600002N/A