“Removal of Heavy Metals Fe3+, Mn2+, Zn2+, Pb2+ and Cd2+ from Wastewater by Using Rice Straw As Low Cost Adsorbent”. Academic Journal of Interdisciplinary Studies 2, no. 6 (September 19, 2013): 85. Accessed July 18, 2024. https://www.richtmann.org/journal/index.php/ajis/article/view/620.