Nafisah Koenang, Jilan, Tuty Emilia Agustina, and Tine Aprianti. “Mass Optimization of Acid-Activated and Acid-Thermal-Activated Bentonite in Heavy Metal Adsorption”. International Journal of Science and Environment (IJSE) 5, no. 4 (November 30, 2025): 304–308. Accessed February 5, 2026. https://ijsenet.com/index.php/IJSE/article/view/279.