Nila Cecília Faria Lopes Medeiros1,2, Gisele Amaral-Labat1, Leonardo Iusuti de Medeiros1,2, Alan Fernando Ney Boss1, Beatriz Carvalho da Silva Fonseca1, Manuella Gobbo de Castro Munhoz3, Guilherme F. B. Lenz e Silva3, Mauricio Ribeiro Baldan1, Flavia Lega Braghiroli4,*
Journal of Renewable Materials, Vol.13, No.6, pp. 1021-1042, 2025, DOI:10.32604/jrm.2025.02025-0017
- 23 June 2025
Abstract Biochar, a carbon-rich material derived from the thermochemical conversion of biomass under oxygen-free conditions, has emerged as a sustainable resource for radar-absorbing technologies. This study explores the production of activated biochars from end-of-life wood panels using a scalable and sustainable physical activation method with CO2 at different temperatures, avoiding the extensive use of corrosive chemicals and complex procedures associated with chemical or vacuum activation. Compared to conventional chemically or vacuum-activated biochars, the physically activated biochar demonstrated competitive performance while minimizing environmental impact, operational complexity, and energy consumption. Furthermore, activation at 750°C reduces energy consumption by 14%… More >
Graphic Abstract