Presentation Information
[1B06]Development of Titanate Adsorbent with Silica Gel Support(3) Selective adsorption behavior of several cations for column system
*Youko Takahatake1, Yoshikazu Koma1, Jun Hashimoto2, Kaname Kubo2 (1. JAEA, 2. Fujisangyo)
Keywords:
Titanate Modified Silica Adsorbent,Column operation,Cation,Adsorption selectivity,Neodymium
The titanate modified silica adsorbent for decommissioning radioactive wastewater is made by porous silica particles modifying titanate, so its mechanical strength and radiation resistance are high. We already confirmed adsorption performance for Pu and Am by batchwise tests. In this study, considering selectivity of elements on column that was considered actual conditions was conducted using Nd as simulated elements of alfa-emitted nuclides. The solution contained Nd, Sr and seawater components (Na, Mg, Ca, Cl) was supplied to the column packed with the adsorbent. From break through curve, it was revealed Nd was preferentially adsorbed after Mg and Ca were once break through. Therefore, the adsorbent adsorbed alfa-emitted nuclides preferentially to other cations such as alkaline-earth elements on column use.
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