“Removal of Cadmium Ions from Synthetic Wastewater by Using Pennisetum Purpureum (Elephant Grass) As Low Cost Biodegradable Adsorbent (Biosorbent)”. Universiti Malaysia Terengganu Journal of Undergraduate Research 1, no. 1 (January 31, 2019): 103–112. Accessed October 4, 2026. https://journal.umt.edu.my/umtjur/article/view/56.