T. S. Najim and S. A. Yasin, “Adsorption of Cr(Vi) from Aqueous Solution Using Low Cost Adsorbent: Equilibrium Study”, SJUOZ, vol. 1, no. 2, pp. 758–767, Sep. 2013, Accessed: Dec. 20, 2025. [Online]. Available: https://www.sjuoz.uoz.edu.krd/index.php/sjuoz/article/view/385