“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 14, no. 4 (December 30, 2025): 93–97. Accessed July 28, 2026. https://jca.edu.vn/index.php/jca/article/view/2025.069.