Tsagifa, F.H. et al. 2026. Kinetics and Mass Transfer of Methylene Blue Adsorption onto EDA/Cu2+-Functionalized Fly Ash Silica Xerogel. Hydrogen: Jurnal Kependidikan Kimia. 14, 4 (Aug. 2026). DOI:https://doi.org/10.33394/hjkk.v14i4.21972.