Removal of azo dye in water using novel adsorbent based on rice husk biochar with surface modification by protein. Vietnam Journal of Catalysis and Adsorption, [S. l.], v. 14, n. 4, p. 93–97, 2025. DOI: 10.62239/jca.2025.069. Disponível em: https://jca.edu.vn/index.php/jca/article/view/2025.069.. Acesso em: 28 jul. 2026.