ZAINI, NUR FAZILAH BINTI, and Norzila Othman. “Oil Palm Waste As Precursor of Activated Carbon for Heavy Metal Removal”. Recent Trends in Civil Engineering and Built Environment 3, no. 1 (November 30, 2021): 364–373. Accessed April 8, 2026. https://penerbit.uthm.edu.my/periodicals/index.php/rtcebe/article/view/3243.