Sorption and desorption of uranium(VI) on GMZ bentonite: effect of pH, ionic strength, foreign ions and humic substances

被引：0
|
作者：
Shicheng Li
Xiaoli Wang
Zhaoya Huang
Liang Du
Zhaoyi Tan
Yibei Fu
Xiaolin Wang
机构：
[1] China Academy of Engineering Physics,Institute of Nuclear Physics and Chemistry
来源：
Journal of Radioanalytical and Nuclear Chemistry | 2016年 / 308卷
关键词：
Sorption; Desorption; Uranium(VI); GMZ bentonite;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The sorption and desorption of uranium(VI) on GMZ bentonite was investigated as functions of contact time, pH, ionic strength, foreign ions, HSs and initial U(VI) using batch experiments. It is revealed that the sorption strongly depended on pH, cations (Li+, Na+ and K+) and anions (CO32−, SO42− and PO43−). HA benefits the sorption at pH <7.0, while inhibited the sorption at higher pH. Moreover, the hysteresis occurred in the sorption–desorption process in the presence/absence of humic substances. The results could provide data base for the safety assessment of the deep geological disposal repository of high radioactive waste.
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页码：877 / 886
页数：9
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