AMRU HAMDI FU’AD et al. Characterization of Bottom Ash from the Combustion of Palm Oil Empty Fruit Bunches (EFB). International Journal of Integrated Engineering, [S. l.], v. 17, n. 8, p. 272–284, 2025. Disponível em: https://penerbit.uthm.edu.my/ojs/index.php/ijie/article/view/24002. Acesso em: 23 jul. 2026.