Dinh, Thuy-Linh, Thi-Hien Nguyen, Van-Thuan Nguyen, and Thuy-Tien Do. “Removal of Cr(VI) from Aqueous Solutions Using MnFe₂O₄–Coffee Husk Activated Carbon Composite”. HPU2 Journal of Science: Natural Sciences and Technology 5, no. 01 (April 28, 2026): 35–44. Accessed April 29, 2026. https://sj.hpu2.edu.vn/index.php/journal/article/view/595.