Silicotitanate has been known as a selective adsorbent for cesium and strontium. The selective adsorbent has been used in treatment of radioactive waste from nuclear power plant and accidental release of the radioactive species. The selective adsorption processes could lead to reduction of volume of the radioactive waste by exclude the co-existing cations such as calcium, magnesium and sodium in the sorption process. Several magnetization processes of synthesized silicotitanate were tested for maximizing the magnetization effect and minimized loss of sorption capacity of the sorbent. A two-step magnetization process consisted with baking after synthesis of magnetite on the surface of the adsorbent showed better magnetization effect and higher sorption capacity in comparing with the one step magnetization used previous studies. Current results showed the stepwise magnetization minimize the blockage of the pore by the iron oxide and sustain the selective sorption properties. The magnetic separation could help the effective separation of cesium from aqueous phase.

Magnetization of silicotitanate for separation of cesium from aqueous phase using a magnetic separating system

253rd National Meeting (2017)

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