Budsaereechai, Supattra, Khanita Kamwialisak, and Yuvarat Ngernyen. “Adsorption of lead, cadmium and copper on natural and acid activated bentonite clay”. Asia-Pacific Journal of Science and Technology 17, no. 5 (April 14, 2017): 800–810. accessed April 22, 2026. https://so01.tci-thaijo.org/index.php/APST/article/view/83292.