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Antimony (Sb) Contaminated Shooting Range Soil: Sb Mobility and Immobilization by Soil Amendments
Stockholm University, Faculty of Science, Department of Applied Environmental Science (ITM). Norwegian Univ Life Sci UMB, Dept Plant & Environm Sci IPM, Norway.
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2013 (English)In: Environmental Science and Technology, ISSN 0013-936X, E-ISSN 1520-5851, Vol. 47, no 12, 6431-6439 p.Article in journal (Refereed) Published
Abstract [en]

Antimony (Sb) in lead bullets poses a major environmental risk in shooting range soils. Here we studied the effect of iron (Fe)-based amendments on the mobility of Sb in contaminated soil from shooting ranges in Norway. Untreated soil showed high Sb concentrations in water extracts from batch tests (0.22-1.59 mg L-1) and soil leachate from column tests (0.3-0.7 mg L-1), occurring exclusively as Sb(V). Sorption of Sb to different iron-based sorbents was well described by the Freundlich equation (Fe-2(SO4)(3), log K-F = 6.35, n = 1.51; CFH-12 (Fe oxyhydroxide), log K-F = 4.16-4.32, n = 0.75-0.76); Fe-0 grit, log K-F = 3.26, n = 0.47). These sorbents mixed with soil (0.5 and 2% w/w), showed significant sorption of Sb in batch tests (46-92%). However, for Fe-2(SO4)(3) and CFH-12 liming was also necessary to prevent mobilization of lead, copper, and zinc. Column tests showed significant significant retention of Sb (89-98%) in soil amended with CFH-12 (2%) mixed with limestone (1%) compared to unamended soil. The sorption capacity of soils amended with Fe-0 (2%) increased steadily up to 72% over the duration period of the column test (64 days), most likely due to the gradual oxidation of Fe-0 to Fe oxyhydroxides. Based on the experimental results, CFH-12 and oxidized Fe-0 are effective amendments for the stabilization of Sb in shooting range soils.

Place, publisher, year, edition, pages
2013. Vol. 47, no 12, 6431-6439 p.
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Environmental Engineering Environmental Sciences
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URN: urn:nbn:se:su:diva-92811DOI: 10.1021/es302448kISI: 000320749000045OAI: oai:DiVA.org:su-92811DiVA: diva2:642588
Note

AuthorCount:7;

Funding agencies:

Norwegian Research Council, program KMB ("Knowledge-building projects with user involvement"),   Norwegian Research Council, program KMB (project ACTIVE: Active materials for the in situ stabilization of contaminated soil)  192936,  Lindum Ressurs Gjenvinning AS,   Norwegian Defence Construction Service,   NGI 

Available from: 2013-08-22 Created: 2013-08-20 Last updated: 2017-12-06Bibliographically approved

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