ISLAM, Nazrul et al. Removal of Copper from Aqueous Solution Using Orange Peel, Sawdust and Bagasse. Pakistan Journal of Analytical & Environmental Chemistry, [S.l.], v. 8, n. 1, p. 6, june 2007. ISSN 2221-5255. Available at: <http://pjaec.pk/index.php/pjaec/article/view/86>. Date accessed: 12 nov. 2019.