“REMOVAL OF COPPER (II) AND CADMIUM (II) IONS FROM AQUEOUS SOLUTIONS USING BANANA PEELS AND BENTONITE CLAY AS ADSORBENTS”. 2015. Journal of Engineering and Sustainable Development 19 (4): 49-68. https://jeasd.uomustansiriyah.edu.iq/index.php/jeasd/article/view/738.