Preparation of activated carbons from coffee husks by hydrothermal carbonization method and application in Methylene Blue dye removal. Vietnam Journal of Catalysis and Adsorption, [S. l.], v. 8, n. 4, p. 1–9, 2025. Disponível em: https://jca.edu.vn/index.php/jca/article/view/527.. Acesso em: 5 oct. 2025.