Review of soluble uranium removal by nanoscale zero valent iron

被引:53
作者
Jing, C. [1 ,2 ]
Li, Y. L. [1 ]
Landsberger, S. [2 ]
机构
[1] China Univ Geosci, Sch Environm Studies, 388 Lumo Rd, Wuhan 430074, Hubei, Peoples R China
[2] Univ Texas Austin, Nucl Engn Teaching Lab, 10100 Burnet Rd, Austin, TX 78712 USA
关键词
Uranium; Nanoscale zero valent iron; Contaminated water treatment; PERMEABLE REACTIVE BARRIER; ANOXIC BATCH SYSTEMS; ZEROVALENT IRON; AQUEOUS-SOLUTION; REDUCTION; NANOPARTICLES; WATER; REMEDIATION; MECHANISM; GROUNDWATER;
D O I
10.1016/j.jenvrad.2016.06.027
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Uranium (U) has been released to surface soil and groundwater through military and industrial activities. Soluble forms of U transferred to drinking water sources and food supplements can potentially threaten humans and the biosphere due to its chemical toxicity and radioactivity. The immobilization of aqueous U onto iron-based minerals is one of the most vital geochemical processes controlling the transport of U. As a consequence, much research has been focused on the use of iron-based materials for the treatment of U contaminated waters. One material currently being tested is nanoscale zero-valent iron (nZVI). However, understanding the removal mechanism of U onto nZVI is crucial to develop new technologies for contaminated water resources. This review article aims to provide information on the removal mechanism of U onto nZVI under different conditions (pH, U concentration, solution ion strength, humic acid, presence of O-2 and CO2, microorganism effect) pertinent to environmental and engineered systems, and to provide risk or performance assessment results with the stability of nZVI products after removal of U in environmental restoration. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码:65 / 72
页数:8
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