Preparation of bio-nanoparticles adsorbent derivative from Iraqi date seeds for the removal of pollutants from aqueous solutions

Abstract

New type of nanoparticle biomass adsorbent was synthesis from Iraqi date seeds activated carbon (DSAC) and iron oxide nanoparticles (IONPs) under the optimum conditions of temperature, pH and mixture ratio of (FeCl2:DSAC). The final product was characterized for the physical and chemical properties using XRD, SEM, UV, FTIR and color test. Cadmium ion selected in this work as heavy metal; the stock solutions of Cd (II) prepared with concertation of 100 ppm. Four different initial concentrations flasks of cadmium ion prepared (25, 20, 15 and 10 ppm). The adsorption equilibrium experiments of cadmium and led onto nano adsorbent were analyzed by the Langmuir, Freundlich, and the Temkin isotherm models, the equilibrium data fitted well by the Langmuir model with maximum adsorption capacity of 15 mg/g for Cd(II).