Lim JQ, Mohd Zaki RSR, Miskan SN, AiniRazali N, Jaafar NF. Optimization of Pb(II) Removal using Magnetic γ-Fe₂O₃/KCC-1 Synthesized from Palm Oil Fuel Ash. J. Chem. Eng. Ind. Biotechnol. 2022;8(1):18-26. Accessed March 14, 2025. https://journal.ump.edu.my/jceib/article/view/7774