S & R IAU Researcher Investigates an Innovative Method to Manage the Effects of Nuclear Waste Disposal

Tuesday, April 10, 2018 - 15:15

A researcher from Islamic Azad University, science and Research branch, has investigated the effect of the natural nano-clinoptilolite, a rare highly efficient catalyst available in Sabzevar region in Iran, was used to remove the strontium ion from aqueous solution.

Based on the research, Strontium 90 is a nuclear fission product that produces about 6% and is a major radionuclide used in nuclear fuel. This isotope is relatively stimulant and can penetrate the underlying layers of the soil and groundwater.

In order to improve the adsorbent efficiency for studied ion, the Schiff Base bis (2hydroxy benzaldehyde) 1, 2-di-amino ethane (H2L)ligand was used to encapsulate in zeolite cavities.

The results showed that the presence of this ligand increased the absorption of strontium ions compared to unmodified zeolite, with the highest adsorption at pH 6, the contact time of 30 min, the temperature at 25 °C and 0.05 g mass of adsorbent.

After improving the efficiency of this exchanger in the absorption of ions of strontium, the possibility of stabilizing strontium loaded on the adsorbent used by heat dissipation was investigated.

The results of the stabilization study showed that with increasing thermal temperature, the amount of strontium released from the adsorbent phase decreased and a greater amount of strontium was stabilized in the clinoptilolite absorbent.

The research “Immobilization of strontium ion in natural zeolite matrix” was advised by Mohammad Rahgoshay, Nuclear Engineering of S & R IAU, and carried out by Mahya Fayezi, nuclear engineering of S and R IAU, Zahra Shiri Yekta, researcher of Material and Nuclear Fuel Research School, Nuclear Science and Technology Research Institute and Hamid Sepehrian, Material and Nuclear Fuel Research School, Nuclear Science and Technology Research Institute, P.O.

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