Chemical immobilization of metals and metalloids by phosphates

被引:61
|
作者
Hafsteinsdottir, Erla G. [1 ]
Camenzuli, Danielle [1 ]
Rocavert, Amy L. [1 ]
Walworth, James [2 ]
Gore, Damian B. [1 ]
机构
[1] Macquarie Univ, Dept Environm Sci, N Ryde, NSW 2109, Australia
[2] Univ Arizona, Dept Soil Water & Environm Sci, Tucson, AZ 85721 USA
基金
澳大利亚研究理事会;
关键词
IN-SITU STABILIZATION; LEAD-CONTAMINATED SOIL; PB-ZN MINE; AQUEOUS-SOLUTIONS; POLLUTED SOILS; HEAVY-METALS; SYNTHETIC HYDROXYAPATITES; SOLUBILIZING BACTERIA; DISSOLUTION KINETICS; CALCIUM-PHOSPHATE;
D O I
10.1016/j.apgeochem.2015.03.014
中图分类号
P3 [地球物理学]; P59 [地球化学];
学科分类号
0708 ; 070902 ;
摘要
Remediation of metal contaminated media using orthophosphate fixation forms insoluble and nonbioavailable salts from metal and phosphate sources. The main focus has been on fixation of Pb, where the formation of pyromorphite, the most insoluble lead phosphate, has shown the great potential of this remediation technique. Other metals (Ba, Cd, Co, Cu, Eu, Ni, U, Zn) also have potential for effective fixation by orthophosphate. We review the applicability of the treatment across wider environmental conditions, particularly in surface soil, its use with elements other than Pb, product stability and efficiency with mixed contaminants. (C) 2015 Elsevier Ltd. All rights reserved.
引用
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页码:47 / 62
页数:16
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