MECHANISM OF URANIUM ADSORPTION ON AMIDOXIME RESIN

ZHENG BANGDING; CAI SHUIYUAN; ZHUANG MINGJIANG; JIANG LONGSHENG

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Article Navigation > Acta Oceanologica Sinica > 1985 > (3): 417-422

ZHENG BANGDING, CAI SHUIYUAN, ZHUANG MINGJIANG, JIANG LONGSHENG. MECHANISM OF URANIUM ADSORPTION ON AMIDOXIME RESIN[J]. Acta Oceanologica Sinica, 1985, (3): 417-422.

Citation:

ZHENG BANGDING, CAI SHUIYUAN, ZHUANG MINGJIANG, JIANG LONGSHENG. MECHANISM OF URANIUM ADSORPTION ON AMIDOXIME RESIN[J]. Acta Oceanologica Sinica, 1985, (3): 417-422.

ZHENG BANGDING, CAI SHUIYUAN, ZHUANG MINGJIANG, JIANG LONGSHENG. MECHANISM OF URANIUM ADSORPTION ON AMIDOXIME RESIN[J]. Acta Oceanologica Sinica, 1985, (3): 417-422.

Citation:

ZHENG BANGDING, CAI SHUIYUAN, ZHUANG MINGJIANG, JIANG LONGSHENG. MECHANISM OF URANIUM ADSORPTION ON AMIDOXIME RESIN[J]. Acta Oceanologica Sinica, 1985, (3): 417-422.

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MECHANISM OF URANIUM ADSORPTION ON AMIDOXIME RESIN

Third Institute of Oceanography, National Bureau of Oceanography, Xiamen

Received Date: 1984-03-29
Rev Recd Date: 1984-10-05

Abstract

Abstract

The mechanism of uranium adsorption from seawater by polyacrylamidoxime resin is investigated by means of the experiments of adsorption isotherm and adsorption rate.The uranium uptake increases with the adsorption temperature and varies with the pH of seawater.Thermochemical and kinetic calculation show that the enthalpy change (△H) and the activation energy (E) of the uranium adsorption are 42.4 42.4 kJ mol^-1 and 41.2 kJ mol^-1 respectively, indicating that the uranium adsorption on the resin proceeds via a certain complex chemical reaction in which the amidoxime group in the resin chelates uranyl ions.