Sorption Concentration of Uranium in Sea Water Using a Polymer Sorbent Containing Fragments of Dithizone

Abstract

The article has studied the removal of U(VI) chelatoforming sorbent based on anhydride with styrene chemically modified by dithizone. It was established that uranium is sorbed to its maximum at pH 5 (ammonia-acetate buffer) and concentration 1428 mg/dm³. Statistical sorption capacity—1249 mg/g. It was cleared out that ionic force up to 0.6 did not affect sorption and its consecutive increase at first gradually and then sharply decrease sorption. It is established that when using different mineral acids (HCIO₄, H₂SO₄, HNO₃, HCI) maximum desorption is observed in perchloric acid. The technique for concentration of U(VI) in sea water has been developed including sorption, elution and definition in the desorption solution.