PREPARATION OF AMIDOXIME FIBERS FOR RECOVERY OF URANIUM FROM SEAWATER

被引：27

作者：

KATO, T

KAGO, T

KUSAKABE, K

MOROOKA, S

EGAWA, H

机构：

[1] KYUSHU UNIV, DEPT APPL CHEM, HIGASHI KU, FUKUOKA 812, JAPAN

[2] KUMAMOTO UNIV, APPL CHEM, KUMAMOTO 860, JAPAN

来源：

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN | 1990年 / 23卷 / 06期

关键词：

CHEMICAL REACTOR; URANIUM; SEAWATER; AMIDOXIME FIBER ADSORBENT; ADSORPTION; MASS TRANSFER; CHELATE;

D O I：

10.1252/jcej.23.744

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Commercial acrylonitrile fibers of 1.2, 1.5, 3, 8 and 15 denier were separately treated in a 0.38 mol/l NH2OH methanolic solution of 80-degrees-C and then in a 0.1 mol/l NaOH aqueous solution at 30-degrees-C. The treatments were carried out by changing reaction periods to find the optimum conditions. The intrinsic adsorption rate of uranium from seawater with the amidoxime fibers was inversely proportional to fiber diameter, and the capacity was in the range of 120-350 mg per kg of dry fiber per day. The effective diffusivity of uranium in 1.5-denier amidoxime fiber immersed in seawater was 5 X 10(-8) cm2/s. The strength of the fibers was not reduced by the NH2OH and NaOH treatment.

引用

页码：744 / 750

页数：7

共 24 条

[1] DEVELOPMENT OF SORBERS FOR THE RECOVERY OF URANIUM FROM SEAWATER .2. THE ACCUMULATION OF URANIUM FROM SEAWATER BY RESINS CONTAINING AMIDOXIME AND IMIDOXIME FUNCTIONAL-GROUPS [J].