Removal of Cu (ll) From Aqueous Solution Using Polyacrylic Acid Hydrogel Beads as Adsorbent. Iraqi Journal of Science [Internet]. 2024 Jan. 26 [cited 2024 May 13];54(2):240-8. Available from: https://ijs.uobaghdad.edu.iq/index.php/eijs/article/view/12251