Cited by 177Groundwater flow and contamination studiesSoil and Unsaturated FlowEnvironmental Chemistry and Analysis

Determination of effective air-water interfacial area in partially saturated porous media using surfactant adsorption

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Kim, Heonki, Rao, P. Suresh C., Annable, Michael D.·1997·Water Resources Research

Abstract

The effective specific air‐water interfacial area in a sand‐packed column was measured at several water saturations (Sw) using a surface‐reactive tracer (sodium dodecylbenzene sulfonate (SDBS)) and a nonreactive tracer (bromide). Miscible displacement experiments were conducted under steady water flow conditions to quantify the retardation of SDBS resulting from its adsorption onto the air‐water interface in a sand‐packed column. A consistent trend of increased retardation of SDBS compared with the nonreactive tracer, bromide, was observed with decreasing Sw. The data for air‐water surface tension measured at various SDBS concentrations were interpreted using the Gibbs model to estimate the required adsorption parameters. The retardation factors (Rt) for SDBS breakthrough curves were then used in combination with the estimated SDBS adsorption coefficient to calculate the values at different Sw. For the range of experimental conditions employed in this study, the retardation factor for SDBS ranged from Rt = 1.00 at Sw = 1.00 (Rt < 1 due to SDBS sorption on sand) to Rt = 3.44 at Sw = 0.29 (which corresponds to ). These values are in agreement with theoretical predictions and recently published data. Improvements needed to overcome the experimental limitations of the presented method are also discussed.

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Research works printed but not linked: 2

  1. Annable, M.D., P.S. C. Rao, K. Hatfield, W. D. Graham, and A. L. Wood, Use of partitioning tracers for measuring residual NAPL distribution in a contaminated aquifer: Preliminary results from a field-scale test, paper presented at 2nd Tracer Workshop, Univ. of Tex. at Austin, 1994.
  2. Saripalli, K. P., H. Kim, P.S. C. Rao, and M.D. Annable, Measure- ment of specific fluid-fluid interfacial areas in porous media, Envi- ron. Sci. Technol., 31(3), 932-936, 1997a.

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Authors
Kim, H., Rao, P. S. C., & Annable, M. D.
Affiliations
University of Florida (US)
Venue
Water Resources Research
Published
1997-12
Volume
33
Issue
12
Pages
2705-2711
ISSN
  • 0043-1397 (ISSN-L)
  • 1944-7973
OpenAlex
W2080477964
Cited by
177
References
51
Citations by year
2026: 6 · 2025: 5 · 2024: 7 · 2023: 6 · 2022: 12 · 2021: 6 · 2020: 11 · 2019: 5 · 2018: 3 · 2017: 6 · 2016: 5 · 2015: 8 · 2013: 5 · 2012: 5
FWCI
11.96
Type
journal article
Language
en
Open access
Locations
Water Resources Research (publishedVersion)
Funders
Air Force Office of Scientific Research (F49620)
Topics
  • Physical Sciences › Environmental Science › Environmental Engineering › Groundwater flow and contamination studies
  • Physical Sciences › Engineering › Civil and Structural Engineering › Soil and Unsaturated Flow
  • Physical Sciences › Environmental Science › Environmental Chemistry › Environmental Chemistry and Analysis
Keywords
air-water interfacial area, surfactant adsorption, sodium dodecyl benzene sulfonate, partial saturation, porous media, retention factor, miscible displacement, surface tension, Gibbs model, adsorption coefficient, water saturation, sand columns

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