Daud Z, A Rahman SE, Awang H, Abubakar MH, Ridzuan MB, Tajarudin HA. Utilization of Waste Paper Sludge as an Alternative Adsorbent for the Adsorption of Ammonia Nitrogen and COD in Stabilized Landfill Leachate. ijie [Internet]. 2019 Jan. 1 [cited 2024 Aug. 17];10(9). Available from: https://publisher.uthm.edu.my/ojs/index.php/ijie/article/view/3012