Pangeran, A. B., Afandy, M. A., & Sawali, F. D. I. (2023). Efficiency of FeSO4.7H2O as a Coagulant on Chromium Hexavalent Removal Using Coagulation-Flocculation Process: Optimization Using Response Surface Methodology. Jurnal Teknik Kimia Dan Lingkungan, 7(2), 123–133. https://doi.org/10.33795/jtkl.v7i2.3560