Dr. Kapil Malviya, Arshi Khan, Dr. Pankaj Singh,. “Experimental Study on the Removal of Heavy Metal (Chromium) Using Treated Tamarind Shell and Tridax Procumbens”. Design Engineering (October 28, 2021): 7667-7678. Accessed May 6, 2024. http://www.thedesignengineering.com/index.php/DE/article/view/5810.