Pujiastuti, Caecilia, Ketut Sumada, Meriana Armidianti, and Adinda Rimarsya Bahita Ahmad. “Bleaching Earth Recovery from Waste to Purify Cooking Oil by Extraction–Activation Method”. Journal of Research and Technology 8, no. 2 (December 15, 2022): 169–177. Accessed January 31, 2025. https://journal.unusida.ac.id/index.php/jrt/article/view/401.