Rahmadan, Jeri, Veronika Parhusip, Neza Rahayu Palapa, Tarmizi Taher, Risfidian Mohadi, and Aldes Lesbani. “ZnAl-Humic Acid Composite As Adsorbent of Cadmium(II) From Aqueous Solution”. Science and Technology Indonesia 6, no. 4 (October 18, 2021): 247–255. Accessed June 5, 2026. https://www.sciencetechindonesia.com/index.php/jsti/article/view/358.