DESORPTION OF URANIUM FROM AMIDOXIME FIBER ADSORBENT

被引：21

作者：

GOTO, A ^{[1
]}

MOROOKA, S ^{[1
]}

FUKAMACHI, M ^{[1
]}

KUSAKABE, K ^{[1
]}

KAGO, T ^{[1
]}

机构：

[1] TOWA UNIV,DEPT APPL CHEM,FUKUOKA 815,JAPAN

来源：

SEPARATION SCIENCE AND TECHNOLOGY | 1993年 / 28卷 / 13-14期

关键词：

D O I：

10.1080/01496399308016745

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

An amidoxime fibrous adsorbent is contacted with uranium-enriched seawater (10 ppm); about 10 mg uranium is loaded per 1 g dry fiber. Then the rate and yield of uranium desorption from the fiber are determined with various eluents. Acid solutions are superior to alkali carbonate solutions as eluents. With a 0.1 mol-L-1 HCl solution, desorption is completed in 2 hours regardless of the presence of uranium in the leaching solution up to 15 ppm (almost-equal-to 6 x 10(-5) 5 mol.L-1). Serial operation of the adsorption-desorption cycle four times does not affect desorption efficiency, but the addition of heavy metal ions to the eluent at a level of 1.8 x 10(-3) mol.L-1 significantly decreases desorption efficiency.

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页码：2229 / 2235

页数：7

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