Equilibrium and Kinetic Study of Removal Copper(II) from Aqueous Solution Using Chicken Eggshells: Low Cost Sorbent

Abstract

The research aims to investigate feasibility eggshells as potential adsorbent to remove copper(II) ions from aqueous solution. Eggshells powder was characterized using X-ray diffraction, scanning electron microscopy, and Fourier transform infrared spectroscopy. Effect of copper(II) initial concentration, adsorbent dosage, and contact time have conducted. The optimum adsorption condition obtained when 0.7 g eggshells applied to 50 mg/L copper(II) solution for 50 minutes. The maximum percentage of copper(II) removal was exceeded more than 85%. Langmuir and Freundlich isotherm model were applied to describe the equilibrium adsorption. Copper(II) kinetics sorption process was fitted to pseudo-second order model with a rate constant equal to 0.516 g/mg.min. The results clearly exhibit that eggshells powder can be effectively used to remove copper(II) ions from aqueous solutions.

Pathways for Sustainable Utilization of Waste Chicken Eggshell

“…Their efforts were successful as up to 97% of the lead pollutant were removed. Other researchers also utilized WCES ground into fine powder for the adsorption of nickel [76], copper (II) [77], cadmium [78], and other metal ions [79] from wastewater. The authors reported high removal efficiency thereby reinforcing the performance of WCES powder as an economical, effective, and environmentally benign adsorbent for wastewater treatment.…”