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In situ remediation of arsenic in contaminated soils
Author(s) -
Martin Todd A.,
Ruby Michael V.
Publication year - 2003
Publication title -
remediation journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.762
H-Index - 27
eISSN - 1520-6831
pISSN - 1051-5658
DOI - 10.1002/rem.10092
Subject(s) - amendment , arsenic , environmental remediation , soil water , environmental science , lead smelting , environmental chemistry , contamination , soil contamination , smelting , waste management , chemistry , soil science , ecology , organic chemistry , political science , law , biology , engineering
In situ chemical fixation represents a promising and potentially cost‐effective treatment alternative formetal‐contaminated soils. This article presents the findings of the use of iron‐bearing soil amendments to reduce the leachability andbioaccessibility of arsenic in soils impacted by stack fallout from a zinc smelter. The focus of this investigation was to reduce the leadbioaccessibility of the soils through addition with phosphorus‐bearing amendments. However, as phosphorus addition was expected to increasearsenic mobility, the fixation strategy also incorporated use of iron‐bearing amendments to offset or reverse these effects. The findings ofthis investigation demonstrated that inclusion of iron‐bearing chemicals in the amendment formulation reduced arsenic leachability andbioaccessibility without compromising amendment effectiveness for reducing lead bioaccessibility. These results suggest that in situ chemical fixation has the potential to be an effective strategy for treatment of the impacted soils. © 2003 Wiley Periodicals, Inc.