Abstract
High pesticide concentrations in soil from spills or discharges can result in point-source contamination of ground and surface waters. Cost-effective technologies are needed for on-site treatment that meet clean-up goals and restore soil function. Remediation is particularly challenging when a mixture of pesticides is present. Zerovalent iron (Fe{sup 0}) has been shown to promote reductive dechlorination and nitro group reduction of a wide range of contaminants in soil and water. We employed Fe{sup 0} for on-site treatment of soil containing >1000 mg metolachlor, >55 mg alachlor, >64 mg atrazine, >35 mg pendimethalin, and >10 mg chlorpyrifos kg{sup -1}. While concentrations were highly variable within the windrowed soil, treatment with 5% (w/w) Fe{sup 0} resulted in >60% destruction of the five pesticides within 90 d and increased to >90% when 2% (w/w) Al{sub 2}(SO{sub 4}){sub 3} was added to the Fe{sup 0}. GC/MS analysis confirmed dechlorination of metolachlor and alachlor during treatment. Our observations support the use of Fe{sup 0} for ex situ treatment of pesticide-contaminated soil. - Capsule: Zerovalent iron promotes pesticide degradation in highly contaminated soil.
Shea, P J;
[1]
Machacek, T A;
[1]
Comfort, S D
[1]
- University of Nebraska-Lincoln, Lincoln, NE 68583-0915 (United States)
Citation Formats
Shea, P J, Machacek, T A, and Comfort, S D.
Accelerated remediation of pesticide-contaminated soil with zerovalent iron.
United Kingdom: N. p.,
2004.
Web.
doi:10.1016/j.envpol.2004.05.003.
Shea, P J, Machacek, T A, & Comfort, S D.
Accelerated remediation of pesticide-contaminated soil with zerovalent iron.
United Kingdom.
https://doi.org/10.1016/j.envpol.2004.05.003
Shea, P J, Machacek, T A, and Comfort, S D.
2004.
"Accelerated remediation of pesticide-contaminated soil with zerovalent iron."
United Kingdom.
https://doi.org/10.1016/j.envpol.2004.05.003.
@misc{etde_20617959,
title = {Accelerated remediation of pesticide-contaminated soil with zerovalent iron}
author = {Shea, P J, Machacek, T A, and Comfort, S D}
abstractNote = {High pesticide concentrations in soil from spills or discharges can result in point-source contamination of ground and surface waters. Cost-effective technologies are needed for on-site treatment that meet clean-up goals and restore soil function. Remediation is particularly challenging when a mixture of pesticides is present. Zerovalent iron (Fe{sup 0}) has been shown to promote reductive dechlorination and nitro group reduction of a wide range of contaminants in soil and water. We employed Fe{sup 0} for on-site treatment of soil containing >1000 mg metolachlor, >55 mg alachlor, >64 mg atrazine, >35 mg pendimethalin, and >10 mg chlorpyrifos kg{sup -1}. While concentrations were highly variable within the windrowed soil, treatment with 5% (w/w) Fe{sup 0} resulted in >60% destruction of the five pesticides within 90 d and increased to >90% when 2% (w/w) Al{sub 2}(SO{sub 4}){sub 3} was added to the Fe{sup 0}. GC/MS analysis confirmed dechlorination of metolachlor and alachlor during treatment. Our observations support the use of Fe{sup 0} for ex situ treatment of pesticide-contaminated soil. - Capsule: Zerovalent iron promotes pesticide degradation in highly contaminated soil.}
doi = {10.1016/j.envpol.2004.05.003}
journal = []
issue = {2}
volume = {132}
journal type = {AC}
place = {United Kingdom}
year = {2004}
month = {Nov}
}
title = {Accelerated remediation of pesticide-contaminated soil with zerovalent iron}
author = {Shea, P J, Machacek, T A, and Comfort, S D}
abstractNote = {High pesticide concentrations in soil from spills or discharges can result in point-source contamination of ground and surface waters. Cost-effective technologies are needed for on-site treatment that meet clean-up goals and restore soil function. Remediation is particularly challenging when a mixture of pesticides is present. Zerovalent iron (Fe{sup 0}) has been shown to promote reductive dechlorination and nitro group reduction of a wide range of contaminants in soil and water. We employed Fe{sup 0} for on-site treatment of soil containing >1000 mg metolachlor, >55 mg alachlor, >64 mg atrazine, >35 mg pendimethalin, and >10 mg chlorpyrifos kg{sup -1}. While concentrations were highly variable within the windrowed soil, treatment with 5% (w/w) Fe{sup 0} resulted in >60% destruction of the five pesticides within 90 d and increased to >90% when 2% (w/w) Al{sub 2}(SO{sub 4}){sub 3} was added to the Fe{sup 0}. GC/MS analysis confirmed dechlorination of metolachlor and alachlor during treatment. Our observations support the use of Fe{sup 0} for ex situ treatment of pesticide-contaminated soil. - Capsule: Zerovalent iron promotes pesticide degradation in highly contaminated soil.}
doi = {10.1016/j.envpol.2004.05.003}
journal = []
issue = {2}
volume = {132}
journal type = {AC}
place = {United Kingdom}
year = {2004}
month = {Nov}
}