Kong Yong, Soon, Jesielyna Leyom, Chia Chay Tay, and Suhaimi Abdul Talib. “Sorption of Lead from Aqueous System Using Cocoa Pod Husk Biochar: Kinetic and Isotherm Studies”. International Journal of Engineering & Technology 7, no. 3.11 (July 21, 2018): 241–244. Accessed April 29, 2024. https://www.sciencepubco.com/index.php/ijet/article/view/16017.