“Eggshell Powder as An Adsorbent for Removal of Cu (II) and Cd (II) from Aqueous Solution: Equilibrium, Kinetic and Thermodynamic Studies”, NJES, vol. 19, no. 2, pp. 186–193, Jun. 2016, Accessed: May 04, 2024. [Online]. Available: https://nahje.com/index.php/main/article/view/12