Efficient Removal of Lead (II) and Cadmium (II) from Aqueous Solution Using Eggshell-derived nano-calcium oxide: Kinetics, Isotherms, and Statistical Optimization
Nano-calcium oxide (CaO) was synthesized from waste chicken eggshells by calcination. The synthesized nanoparticles were characterized by X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), electron microscopy, N₂ adsorption–desorption analysis and zeta-potential measurements. The cubic nanoparticl...