Palapa, N. R.; Wijaya, A.; Ahmad, N.; Amri, A.; Mohadi, R.; Lesbani, A. Activated Hydrochar Prepared from Longan Fruit (Dimocarpus Longan Lour.) Peel via Hydrothermal Carbonization-NaOH Activation for Cationic Dyes Removal. sci. technol. indones. 2023, 8, 461-470.