RATE OF ADSORPTION OF URANIUM FROM SEAWATER WITH A CALIX[6]ARENE ADSORBENT

被引：18

作者：

AIHARA, T ^{[1
]}

GOTO, A ^{[1
]}

KAGO, T ^{[1
]}

KUSAKABE, K ^{[1
]}

MOROOKA, S ^{[1
]}

机构：

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

来源：

SEPARATION SCIENCE AND TECHNOLOGY | 1992年 / 27卷 / 12期

关键词：

CALIX[6]ARENE; URANIUM; URANYL ION; ADSORPTION; SEAWATER; COMPLEXATION RATE;

D O I：

10.1080/01496399208029230

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The rate of complex formation between calix[6]arene-p-hexasulfonate and uranyl ion is studied over a wide range of carbonate ion concentrations. The presence of carbonate ion decreases the complexation rate. The distribution of various uranyl species is calculated from a set of mass balances of participating ions with their stability constants. UO2(CO3)34- has the highest concentration, followed by UO2(OH)3- and UO2(CO3)32-. Other uranyl species are negligible. The complexation rate is proportional to the 0.27-1.0 power of the total concentration of uranyl species other than UO2(CO3)34-. This implies that the rate-determining step of the complexation is the reaction between calix[6]arene-p-hexasulfonate and UO2(OH)3- or UO2(CO3)22-.

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收藏

页码：1655 / 1667

页数：13

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