In Situ Long-Term Reductive Bioimmobilization of Cr(VI) in Groundwater Using Hydrogen Release Compound

被引：79

作者：

Faybishenko, Boris ^{[1
]}

Hazen, Terry C. ^{[1
]}

Long, Philip E. ^{[2
]}

Brodie, Eoin L. ^{[1
]}

Conrad, Mark E. ^{[1
]}

Hubbard, Susan S. ^{[1
]}

Christensen, John N. ^{[1
]}

Joyner, Dominique ^{[1
]}

Borglin, Sharon E. ^{[1
]}

Chakraborty, Romy ^{[1
]}

Williams, Kenneth H. ^{[1
]}

Peterson, John E. ^{[1
]}

Chen, Jinsong ^{[1
]}

Brown, Shaun T. ^{[1
]}

Tokunaga, Tetsu K. ^{[1
]}

Wan, Jiamin ^{[1
]}

Firestone, Mary ^{[1
]}

Newcomer, Darrell R. ^{[2
]}

Resch, Charles T. ^{[2
]}

Cantrell, Kirk J. ^{[2
]}

Willett, Anna ^{[3
]}

Koenigsberg, Stephen ^{[3
]}

机构：

[1] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA

[2] Pacific NW Natl Lab, Richland, WA 99352 USA

[3] Regenesis Ltd, San Clemente, CA USA

来源：

ENVIRONMENTAL SCIENCE & TECHNOLOGY | 2008年 / 42卷 / 22期

基金：

美国能源部;

关键词：

D O I：

10.1021/es801383r

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The results of a field experiment designed to test the effectiveness of a novel approach for long-term, in situ bioimmobilization of toxic and soluble Cr(VI) in groundwater using a hydrogen release compound (HRC)-a slow release glycerol polylactate-are described. The field experiment was conducted at the Hanford Site (Washington), a U.S. Department of Energy nuclear production facility, using a combination of hydrogeological, geophysical, geochemical, and microbiological measurements and analyses of water samples and sediments. The results of this experiment show that a single HRC injection into groundwater stimulates an increase in biomass, a depletion of terminal electron acceptors O-2, NO3-, and So(4)(2-,) and an increase in Fe2+, resulting in a significant decrease in soluble Cr(VI). The Cr(VI) concentration has remained belowthe background concentration in the downgradient pumping/ monitoring well, and below the detection limit in the injection well for more than 3 years after the HRC injection. The degree of sustainability of Cr(VI) reductive biclimmobilization under different redox conditions at this and other contaminated sites is currently under study.

引用

页码：8478 / 8485

页数：8

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