RECOVERY OF URANIUM FROM SEAWATER .13. LONG-TERM STABILITY-TESTS FOR HIGH-PERFORMANCE CHELATING RESINS CONTAINING AMIDOXIME GROUPS AND EVALUATION OF ELUTION PROCESS

被引：26

作者：

EGAWA, H ^{[1
]}

KABAY, N ^{[1
]}

SHUTO, T ^{[1
]}

JYO, A ^{[1
]}

机构：

[1] KUMAMOTO UNIV,FAC ENGN,DEPT APPL CHEM,KUROKAMI 2-39-1,KUMAMOTO 860,JAPAN

来源：

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH | 1993年 / 32卷 / 03期

关键词：

D O I：

10.1021/ie00015a017

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Large-scale adsorption/elution cycles were performed to investigate the long-term stability of the chelating resins employed. The adsorbed metal ions were rapidly and quantitatively eluted from the resins with acid eluants. The shrinkage of the resins with successive adsorption/elution cycles influenced the adsorption capacity. The uranium recovery was maintained at a nearly constant value by the employment of bicarbonate eluants. In particular, 2 mol dm-3 NH4HCO3 yielded an efficient stripping for uranium. However, it was clarified that the elution with 0.25 mol dm-3 H2SO4, which gave a high efficiency, was better than the bicarbonate eluants.

引用

页码：540 / 547

页数：8

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