“REMOVAL OF COPPER (II) AND CADMIUM (II) IONS FROM AQUEOUS SOLUTIONS USING BANANA PEELS AND BENTONITE CLAY AS ADSORBENTS”. Journal of Engineering and Sustainable Development, vol. 19, no. 4, July 2015, pp. 49-68, https://jeasd.uomustansiriyah.edu.iq/index.php/jeasd/article/view/738.