Adetya, Nais Pinta, Uma Fadzilia Arifin, Emiliana Anggriyani, and Laili Rachmawati. “Optimization of Chromium (VI) Adsorption Using Microalgae Biomass (Spirulina sp.) and Its Application in Leather Tannery Waste”. CHEESA: Chemical Engineering Research Articles 6, no. 2 (December 31, 2023): 105–117. Accessed March 10, 2025. https://e-journal.unipma.ac.id/index.php/cheesa/article/view/16315.