K. Aziz B, A. Abdullah M, J. Jubrael K. Acid Activation and Bleaching Capacity of Some Clays for Decolourizing Used Oils. ajc [Internet]. 2011 Mar. 2 [cited 2024 Nov. 24];23(6):2449-55. Available from: https://asianpubs.org/index.php/ajchem/article/view/10460