REMOVAL OF Cu (II) IONS FROM AQUEOUS SOLUTION USING CALCIUM-ALUMINIUM/CARBON-DERIVED FISH BONES

Abstract

In this research, removal of Cu(II) ion was investigated using the adsorption process, which is widely known as simple operation, low cost, and high efficiency. Therefore, we have designed an adsorbent with the aim to increase its surface area and adsorptive capability. Calcium and aluminium were impregnated onto fish bones that were carbonized at 500o C for an hour, which is denoted as Ca-Al/CFB-500. The performance of Ca-Al/CFB-500 adsorbent to adsorb Cu2+ ions from solution was measured. The chemical and physical properties of Ca-Al/CFB-500 adsorbent were investigated by using X-ray diffraction (XRD), Infrared (IR) spectroscopy, N2 adsorption-desorption, scanning electron microscopy (SEM) and Thermogravimetric (TG) analysis. The Ca-Al/CFB-500 is effective to act as an adsorbent for removing Cu2+ ions from solution, whereby the removal efficiency reached 98 % after 1440 min. The removal of Cu2+ ions from solution by Ca-Al/CFB-500 adsorbent was influenced by pH, whereby pH less than 3 was not favored. It is noticed that the removal of Cu2+ ions onto Ca-Al/CFB-500 follows the pseudo-second order model.