Ibrahim A, Lamaming J, Nakolas L, Jinus V, Yaser AZ. Decolourisation of Sewage using Commercial Tannin-Based Coagulant. emait. 2021;2(2):1-8. Accessed May 4, 2024. https://publisher.uthm.edu.my/ojs/index.php/emait/article/view/9395