Hayyan, A. .; Abed, K.; Al-Saadi, M. .; Elgharbawy, A.; Alanazi, Y.; Saleh, J.; Mohd Latiff, N. H. .; Syed Putra, S. S.; Mohd Nor, M. R.; Mahel Alhashemi, S. F. Application of Response Surface Methodology to Optimize the Treatment Process of High Conversion of Free Fatty Acids Using (1R)-(-)-Camphor-10-Sulfonic Acid and iron(III) Sulphate: Original Scientific Paper. Hem Ind 2025. https://doi.org/10.2298/HEMIND240515003H.