A. N. S. Silahudin and Zawawi Daud, “Adsorption of Pollutants in Sanitary Landfill Leachate Using Granular Oyster Shell and Perlite”, rtcebe, vol. 6, no. 2, pp. 71–79, Feb. 2026, Accessed: Apr. 08, 2026. [Online]. Available: https://penerbit.uthm.edu.my/periodicals/index.php/rtcebe/article/view/15253