ALAMIN, Ahmed Hassan, and Lupong KAEWSICHAN. 2015. “Adsorption of Pb(II) Ions from Aqueous Solution in Fixed Bed Column by Mixture of Clay Plus Bamboo Biochar”. Walailak Journal of Science and Technology (WJST) 13 (11):949-63. https://wjst.wu.ac.th/index.php/wjst/article/view/1847.