Puchongkawarin, Channarong, Supatpong Mattaraj, and Chakkrit Umpuch. “Experimental and modeling studies of methylene blue adsorption onto Na-Bentonite clay”. Engineering and Applied Science Research 48, no. 3 (May 14, 2021): 268–279. accessed May 11, 2025. https://ph01.tci-thaijo.org/index.php/easr/article/view/240502.