Immobilization of uranyl ions from dilute solutions by contact with ultrabasic and basic rocks

被引：0
|
作者：
Savenko A.V. [1 ]
机构：
[1] Geological Faculty, Lomonosov Moscow State University, Leninskie gory
来源：
Radiochemistry | 2013年 / 55卷 / 1期
关键词：
immobilization; rocks; uranium;
D O I：
10.1134/S1066362213010268
中图分类号：
学科分类号：
摘要：
Immobilization of uranyl ions from 0.01 M NaCl and NaHCO3 solutions with Fe(II)-rich samples of ultrabasic (dunite) and basic (olivine gabbro, gabbronorite) rocks was studied. From NaCl solutions, uranium is removed to approximately equal extent with all the samples, whereas with NaHCO 3 the immobilization efficiency differs by a factor of several units, being directly dependent on the FeO content. Uptake of large amounts of U (0.13-0.16 μmol g-1 from solutions initially containing 9 μM UO 2 2+) from NaHCO3 solutions, even at high pH values (9.0), make dunite and olivine gabbro promising as materials for making artificial geochemical barriers for dissolved uranium. © 2013 Pleiades Publishing, Ltd.
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页码：134 / 136
页数：2
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