Adsorption of Pb(II) Ions on Sulfuric Acid Treated Leucaena leucocephala Leaf PowderNoor Fhadzilah Mansur, Megat Ahmad Kamal Megat Hanafiah and Mardhiah IsmailMATEC Web of Conferences, 27 (2015) 03002DOI: https://doi.org/10.1051/matecconf/20152703002