Salleh, N. F., Syamsurizal, M., Ghafar, N. A., Shukri, N. M., & Hapani, M. (2023). ORANGE PEEL WASTES AS LOW-COST ADSORBENT FOR REMOVAL OF NICKEL AND CHROMIUM IN AQUEOUS SOLUTION. Malaysian Journal of Catalysis, 7(1), 20–25. https://doi.org/10.11113/mjcat.v7n1.170