Pangeran AB, Afandy MA, Sawali FDI. Efficiency of FeSO4.7H2O as a Coagulant on Chromium Hexavalent Removal Using Coagulation-Flocculation Process: Optimization Using Response Surface Methodology. J. Tek. Kim. Ling [Internet]. 2023 Oct. 29 [cited 2026 Nov. 3];7(2):123-3. Available from: https://jurnal.polinema.ac.id/index.php/jtkl/article/view/3560