DECONTAMINATION OF WASTE SOLUTION FROM DAVIES-GRAY ANALYSES IN A PILOT-FACILITY FOR PROCESS-DEVELOPMENT

被引：14

作者：

HINES, JJ ^{[1
]}

DIAMOND, H ^{[1
]}

YOUNG, JE ^{[1
]}

MULAC, W ^{[1
]}

CHIARIZIA, R ^{[1
]}

HORWITZ, EP ^{[1
]}

机构：

[1] ARGONNE NATL LAB,DIV CHEM,ARGONNE,IL 60439

来源：

SEPARATION SCIENCE AND TECHNOLOGY | 1995年 / 30卷 / 7-9期

关键词：

D O I：

10.1080/01496399508010351

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A pilot plant for removal of radioactivity from solutions has been built and tested. In an initial trial, uranium remaining in a Davies-Gray-analysis waste solution was reduced 300,000-fold to 0.2 ppb by passing the solution through Diphonix(TM) ion-exchange columns. The columns were regenerated (and the uranium was recovered) with HEDPA (1-hydroxyethane-1, 1-diphosphonic acid). The latter was destroyed with H2O2, and the uranium was reduced and precipitated as a phosphate. Final purification of the dissolved precipitate employed a U/TEVA . Spec(TM) (dipentyl pentylphosphonate) extraction chromatographic column. Studies of matrix effects upon the uptake of uranium by the Diphonix(TM) led to an initial dilution of the waste solution and to a reduction of ferric ion.

引用

页码：1373 / 1384

页数：12

共 11 条

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