Alifah Hernanda, R. , Fakhri Izzul Haq, M. , Suprapto, S. and Lailun Ni’mah, Y. 2025. Optimization of Fe Leaching Method for Indonesia Laterite Rocks using Experiment Design Central Composite Design (CCD)-Response Surface Methodology (RSM). Indonesian Journal of Chemical Analysis (IJCA). 8, 1 (Mar. 2025), 50–61. DOI:https://doi.org/10.20885/ijca.vol8.iss1.art5.