Study of Selectivity Anionic Dye Removal and Sustainable Regeneration of Hydrochar from Spirogyra sp. Algae Biomass. - Badaruddin, Muhammad; Hanum, Laila; Melwita, Elda; Wibiyan, Sahrul; Wijaya, Alfan; Ahmad, Nur; Lesbani, Aldes (Trends in Sciences, 2025)