Ratnawati, R., Prasetyaningrum, A., Hargono, H., Zakaria, M. F. “Biosorption of Cu(II) Ions by Water Hyacinth Leaf Powder: Process Performance, Kinetics, and Biosorption Isotherm”, Periodica Polytechnica Chemical Engineering, 2024. https://doi.org/10.3311/PPch.22867