Palapa, N. R., A. Wijaya, N. Ahmad, A. Amri, R. Mohadi, and A. Lesbani. “Activated Hydrochar Prepared from Longan Fruit (Dimocarpus Longan Lour.) Peel via Hydrothermal Carbonization-NaOH Activation for Cationic Dyes Removal”. Science and Technology Indonesia, vol. 8, no. 3, July 2023, pp. 461-70, doi:10.26554/sti.2023.8.3.461-470.