“Adsorption Isotherm and Kinetic Studies of Chitosan–Coffee Husk Carbon Composite Beads for the Removal of Congo Red and Methylene Blue”. ALKIMIA : Jurnal Ilmu Kimia dan Terapan 9, no. 1 (February 28, 2025): 39–45. Accessed January 24, 2026. https://jurnal.radenfatah.ac.id/index.php/alkimia/article/view/30610.