Impact of non-ideal sorption on low-concentration tailing behavior for atrazine transport in two natural porous media

A. Kempf; M. L. Brusseau

doi:10.1016/j.chemosphere.2009.07.059

Impact of non-ideal sorption on low-concentration tailing behavior for atrazine transport in two natural porous media

A. Kempf, M. L. Brusseau

Research output: Contribution to journal › Article › peer-review

25 Scopus citations

Abstract

The impact of non-ideal sorption on atrazine transport was investigated for two sandy porous media with 0.38% and 0.03% organic-carbon contents. In contrast to prior investigations, effluent atrazine concentrations were monitored over a range of five orders of magnitude to examine long-term elution behavior. As characterized by batch-experiments, atrazine experienced nonlinear sorption for both media. The results of the column experiments showed that atrazine exhibited extensive elution tailing (delayed approach to relative concentration of zero). This non-ideal transport was more pronounced for the medium with higher organic-carbon content. A mathematical model incorporating nonlinear, rate-limited sorption/desorption described by a continuous-distribution function was used to successfully simulate atrazine transport.

Original language	English (US)
Pages (from-to)	877-882
Number of pages	6
Journal	Chemosphere
Volume	77
Issue number	6
DOIs	https://doi.org/10.1016/j.chemosphere.2009.07.059
State	Published - Oct 2009

Keywords

Continuous-distribution
Pesticide
Sorption kinetics
Transport modeling

ASJC Scopus subject areas

Environmental Engineering
Environmental Chemistry
Chemistry(all)
Pollution
Health, Toxicology and Mutagenesis

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10.1016/j.chemosphere.2009.07.059

Cite this

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title = "Impact of non-ideal sorption on low-concentration tailing behavior for atrazine transport in two natural porous media",

abstract = "The impact of non-ideal sorption on atrazine transport was investigated for two sandy porous media with 0.38% and 0.03% organic-carbon contents. In contrast to prior investigations, effluent atrazine concentrations were monitored over a range of five orders of magnitude to examine long-term elution behavior. As characterized by batch-experiments, atrazine experienced nonlinear sorption for both media. The results of the column experiments showed that atrazine exhibited extensive elution tailing (delayed approach to relative concentration of zero). This non-ideal transport was more pronounced for the medium with higher organic-carbon content. A mathematical model incorporating nonlinear, rate-limited sorption/desorption described by a continuous-distribution function was used to successfully simulate atrazine transport.",

keywords = "Continuous-distribution, Pesticide, Sorption kinetics, Transport modeling",

author = "A. Kempf and Brusseau, {M. L.}",

note = "Funding Information: This research was funded by The National Institute of Environmental Health Sciences Superfund Basic Research Program (ES04940).",

year = "2009",

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doi = "10.1016/j.chemosphere.2009.07.059",

language = "English (US)",

volume = "77",

pages = "877--882",

journal = "Chemosphere",

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publisher = "Elsevier Limited",

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TY - JOUR

T1 - Impact of non-ideal sorption on low-concentration tailing behavior for atrazine transport in two natural porous media

AU - Kempf, A.

AU - Brusseau, M. L.

N1 - Funding Information: This research was funded by The National Institute of Environmental Health Sciences Superfund Basic Research Program (ES04940).

PY - 2009/10

Y1 - 2009/10

N2 - The impact of non-ideal sorption on atrazine transport was investigated for two sandy porous media with 0.38% and 0.03% organic-carbon contents. In contrast to prior investigations, effluent atrazine concentrations were monitored over a range of five orders of magnitude to examine long-term elution behavior. As characterized by batch-experiments, atrazine experienced nonlinear sorption for both media. The results of the column experiments showed that atrazine exhibited extensive elution tailing (delayed approach to relative concentration of zero). This non-ideal transport was more pronounced for the medium with higher organic-carbon content. A mathematical model incorporating nonlinear, rate-limited sorption/desorption described by a continuous-distribution function was used to successfully simulate atrazine transport.

AB - The impact of non-ideal sorption on atrazine transport was investigated for two sandy porous media with 0.38% and 0.03% organic-carbon contents. In contrast to prior investigations, effluent atrazine concentrations were monitored over a range of five orders of magnitude to examine long-term elution behavior. As characterized by batch-experiments, atrazine experienced nonlinear sorption for both media. The results of the column experiments showed that atrazine exhibited extensive elution tailing (delayed approach to relative concentration of zero). This non-ideal transport was more pronounced for the medium with higher organic-carbon content. A mathematical model incorporating nonlinear, rate-limited sorption/desorption described by a continuous-distribution function was used to successfully simulate atrazine transport.

KW - Continuous-distribution

KW - Pesticide

KW - Sorption kinetics

KW - Transport modeling

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JO - Chemosphere

JF - Chemosphere

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Impact of non-ideal sorption on low-concentration tailing behavior for atrazine transport in two natural porous media

Abstract

Keywords

ASJC Scopus subject areas

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