Author:
Ghamry Mohamed A.,Attia Mohamed A.,Hamoud Moustafa A.,Mahmoud Mamdoh R.
Abstract
AbstractCo(II)–Fe(III) Layered double hydroxide (LDH) was prepared by co-precipitation methods for recovery of 99Mo(VI) from aqueous solutions. The data showed that 99Mo(VI) anions are efficiently adsorbed (R% ˃ 98), in the pH range 2.5–11. The kinetic data showed that about 82% of 99Mo(VI) are adsorbed onto the synthesized LDH in the first ten minutes, while the equilibrium is attained at 120 min. The thermodynamic parameters (ΔG°, ΔH° and ΔS°) are estimated in the temperature range 20–50 °C. The effect of different foreign anions, (Cl−, SO42−, CO32−and NO−3) at various concentrations is evaluated. The synthesized adsorbent showed maximum adsorption capacity of 255.175 mg g−1 for 99Mo(VI) at pH = 3.5, which is mostly higher than those reported in literature.
Funder
Egyptian Atomic Energy Authority
Publisher
Springer Science and Business Media LLC
Subject
Health, Toxicology and Mutagenesis,Public Health, Environmental and Occupational Health,Spectroscopy,Pollution,Radiology, Nuclear Medicine and imaging,Nuclear Energy and Engineering,Analytical Chemistry