@article{Nyakuma_M. Ajibade_Adebayo_Alkali_Otitolaiye_Audu_Bashir_Dodo_Mahmoud_Oladokun_2022, title={Carbon dioxide-assisted Torrefaction of Maize Cobs by Thermogravimetry: Product Yield and Energy Recovery Potentials: Array}, volume={23}, url={https://journals.pnu.edu.ua/index.php/pcss/article/view/5323}, DOI={10.15330/pcss.23.1.16-24}, abstractNote={<p>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 CO<sub>2</sub>-assisted torrefaction of MC was performed from 240 °C to 300 °C (Δ 30 °C) for the residence time of 30 minutes based on the selected non-isothermal/isothermal heating program 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 a 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 CO<sub>2</sub>-torrefaction process enhanced the energy content of MC by 40% – 60%. In conclusion, the findings showed that the CO<sub>2</sub> torrefaction is a practical, sustainable, and cost-effective approach for the valorization of MC into a clean solid biofuel for enhanced energy recovery.</p>}, number={1}, journal={Physics and Chemistry of Solid State}, author={Nyakuma, Bemgba B. and M. Ajibade, Samuel-Soma and Adebayo, Victor B. and Alkali, Habib and Otitolaiye, Victor O. and Audu, Jemilatu O. and Bashir, Faizah M. and Dodo, Yakubu A. and Mahmoud, Abubakar S. and Oladokun, Olagoke}, year={2022}, month={Jan.}, pages={16–24} }