PREPARATION AND PERFORMANCE OF AMIDOXIME FIBER ADSORBENTS FOR RECOVERY OF URANIUM FROM SEAWATER

被引：37

作者：

KAGO, T ^{[1
]}

GOTO, A ^{[1
]}

KUSAKABE, K ^{[1
]}

MOROOKA, S ^{[1
]}

机构：

[1] KYUSHU UNIV,DEPT CHEM SCI & TECHNOL,FUKUOKA 812,JAPAN

来源：

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH | 1992年 / 31卷 / 01期

关键词：

D O I：

10.1021/ie00001a029

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Commercial acrylonitrile fibers of different shapes were treated in a 1.5 or 3.0 wt % NH2OH methanolic solution at 80-degrees-C and then a 0.1 mol.L-1 NaOH aqueous solution at 30 or 80-degrees-C. The treatment was performed for various reaction periods. The intrinsic rate of adsorption of uranium from seawater using the amidoxime fibers became maximum at a certain reaction time for the NH2OH treatment as well as the NaOH treatment and was in the range of 200-600 mg per kilogram of dry fiber per day for the first adsorption run. The adsorption rate of the optimized fibers was decreased by repeating the adsorption and desorption cycle, while that of the fibers whose NaOH treatment was not sufficient was nearly constant in spite of such repetition. The tensile strength of the adsorption fibers decreased with increasing NaOH treatment period.

引用

页码：204 / 209

页数：6

共 23 条

[11] FLOW OF SINGLE-PHASE FLUIDS THROUGH FIBROUS BEDS [J].