Removing Lead and Cobalt Ions from Aqueous Solution by Hydroxyapatite Adsorbent

Abstract

In the current study, to recover and remove lead and cobalt ions from an aqueous solution, hydroxyapatite (HAp) and magnetic nanocomposite of HAp were used.For this purpose, chicken thighbone was used as the starting material.Lead and cobalt ion adsorption process was performed discontinuously within the temperature range 25-55℃, contact time 5-120 min, adsorbent dose 0.25-5g/L, and pH 2-9.Under optimum conditions, the maximum ions adsorption efficiency using hydroxyapatite (HAp) and magnetic nanocomposite of HAp was determined to be 93.75% and 96.11% for lead and 90.48% and 94/72% for cobalt, respectively.FTIR, SEM, and EDS analyses were applied to characterize the adsorbents.