Pujiastuti, C., Ketut Sumada, Meriana Armidianti and Adinda Rimarsya Bahita Ahmad 2022. Bleaching Earth Recovery from Waste to Purify Cooking Oil by Extraction–Activation Method. Journal of Research and Technology. 8, 2 (Dec. 2022), 169–177. DOI:https://doi.org/10.55732/jrt.v8i2.401.