Abstract
Amino magnetic titano-silicate was prepared by two different methods in the presence of dispersed fine magnetite particles the obtained composites named (AMTS and IMTS) were used as an adsorbent to remove U(VI) ions from aqueous solutions and rock samples by a batch method. Various conditions were evaluated, including solution pH, initial uranium concentration, adsorbent dosage, and contact time. The adsorption kinetics and equilibrium isotherms of U(VI) by the AMTS and IMTS composite were studied using the pseudo-first-order and pseudo-second-order kinetic models as well as Langmuir and Freundlich isotherm models. The kinetic data followed the pseudo-secondorder equation; the isotherm data were described by the Langmuir isotherm model and the maximum adsorption capacity (Qmax) was obtained at 142.2 and 133.33 mg/g for AMTS and IMTS, respectively
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