The application of in situ permeable reactive (zero-valent iron) barrier technology for the remediation of chromate-contaminated groundwater: a field test

被引：207
|
作者：
Puls, RW
Paul, CJ
Powell, RM
机构：
[1] US EPA, Robert S Kerr Environm Res Ctr, Natl Risk Management, Ada, OK 74820 USA
[2] ManTech Environm Res Serv Corp, Ada, OK 74820 USA
来源：
APPLIED GEOCHEMISTRY | 1999年 / 14卷 / 08期
关键词：
D O I：
10.1016/S0883-2927(99)00010-4
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：
A small-scale field test was initiated in September 1994 to evaluate the in situ remediation of groundwater contaminated with chromate using a permeable reactive barrier composed of a mixture of zero-valent Fe, sand and aquifer sediment. The site used was an old chrome-plating facility located on a U.S. Coast Guard air base near Elizabeth City, North Carolina. Dissolved chromate concentrations were reduced to less than 0.01 mg/L via reduction from Cr(VI) to Cr(III) as a result of the corrosion of the Fe. As the Fe corrodes, pH increases, oxidation-reduction potential declines, dissolved oxygen is consumed, and Fe(II) is generated. Mineral phases formed as a result of the Fe corrosion include ferrous sulfides and various Fe oxides, hydroxides, and oxyhydroxides. (C) 1999 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：989 / 1000
页数：12
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