Nafisah Koenang, J., Emilia Agustina , T. and Aprianti, T. . (2025) “Mass Optimization of Acid-Activated and Acid-Thermal-Activated Bentonite in Heavy Metal Adsorption”, International Journal of Science and Environment (IJSE), 5(4), pp. 304–308. doi: 10.51601/ijse.v5i4.279.