Tsagifa, Faiqa Haura, et al. “Kinetics and Mass Transfer of Methylene Blue Adsorption onto EDA Cu2+-Functionalized Fly Ash Silica Xerogel”. Hydrogen: Jurnal Kependidikan Kimia, vol. 14, no. 4, Aug. 2026, doi:10.33394/hjkk.v14i4.21972.