Padmanaban, Logithavani, and Zalilah Murni Yunus. 2023. “The Physicochemical Characteristics of Oil Palm Residue-Clay Biocomposite For Removing Food Colouring in Water”. Enhanced Knowledge in Sciences and Technology 3 (2): 355-65. https://publisher.uthm.edu.my/periodicals/index.php/ekst/article/view/10792.