OKECHUKWU, M. C.; ONWUKA, I. K.; UDE, C. J.; ONOVO, U. E.; NNABUGWU, D. O.; UMEOJIAKOR, A. O.; IGBOZULIKE, Augustine Onyekachi. Valorization of African oil bean seed husk to develop solid biofuel for green sustainability and circular bioeconomy. International Journal of Renewable Energy and Environment, Benin, Nigeria, v. 4, n. 2, p. 121–137, 2026. DOI: 10.5281/zenodo.20266435. Disponível em: https://ijree.com/index.php/publications/article/view/33. Acesso em: 19 may. 2026.