Alifah Hernanda, Rasikha, Muhammad Fakhri Izzul Haq, Suprapto Suprapto, and Yatim Lailun Ni’mah. 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):50-61. https://doi.org/10.20885/ijca.vol8.iss1.art5.