Pangeran, A. B., Afandy, M. A. and 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), pp. 123–133. doi: 10.33795/jtkl.v7i2.3560.