Rapid Removal of Nickel(II) by Coconut Leaves Powder as Bioadsorbent

Abstract

In the present paper adsorption technique was employed for the removal of heavy metal Ni(II). The heavy metals are important for proper functioning of biological systems but their deficiency or excess lead to a large number of disorders. Industrial effluents discharged contain higher amount of heavy metals such as Ni, Cd, Hg, Cr and Cu. In this research article low cost and eco-friendly coconut leaves powder as a bioadsorbent were employed for the removal of Ni(II) from industrial wastewater. The batch adsorption study were conducted for the removal of Ni(II) along with different parametric studies of Initial concentration of nickel metal, adsorbent dose, pH, contact time and temperature. The coconut leaves powder bioadsorbent as an experimental research was applied for the systematic and effective investigation to determine the optimal conditions of the operation variables. The employed coconut leaves powder (CLP) bioadsorbent gives positive results, the adsorption of Ni(II) is very rapid and most of fixation occurs at first 15 minutes. The adsorption kinetics obeys second order kinetic. The CLP adsorbent were characterized by SEM analysis before and after treatment, which shows sufficient adsorption of Ni(II) on CLP. The result suggests that coconut leaves powder bioadsorbent can be beneficial in Ni(II) removal from the contaminated water.