Soil pollution by petroleum products, II. Adsorption-desorption of “kerosene” vapors on soils

Yaron, Bruno; Sutherland, P. Lorenz; Galin, Ts.; Acher, A. J.

doi:10.1016/0169-7722(89)90033-8

Cited by 20 publications

(6 citation statements)

References 12 publications

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“…Vapor adsorption is strongly influenced by the amount of water solvating the solid phase. For example, vapor adsorption by oven‐dry soil has been observed to be orders of magnitude larger than adsorption by water‐saturated soil [e.g., Chiou and Shoup , 1985; Yaron et al , 1989; Ong and Lion , 1991; Petersen et al , 1994, 1995; Unger et al , 1996]. However, once water starts solvating the solid surfaces, the magnitude of observed adsorption decreases greatly.…”

Section: Resultsmentioning

confidence: 99%

Impact of soil texture on air‐water interfacial areas in unsaturated sandy porous media

Peng

Brusseau

2005

Water Resources Research

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[1] The gas phase partitioning tracer method was used to measure air-water interfacial area as a function of water content for eight sandy porous media. The porous media comprised a series of sands with narrow particle size ranges, a sand with a wider particle size distribution, a sandy soil, and a loamy sandy soil. The measurement range was extended to very low water contents in an attempt to determine upper limits for air-water interfacial areas. The measured values were compared to the normalized surface areas of the porous media. The results of the experiments showed that the magnitude of the airwater interfacial areas increased with decreasing water saturation and approached that of the normalized surface areas. Generally, air-water interfacial areas were larger for media with larger specific surface areas. The change in air-water interfacial area with changing water saturation was less near saturated water contents and greater at smaller values. In addition, the change was greater for the poorly sorted media than the well-sorted media. An empirical equation was developed to describe the observed relationship between air-water interfacial area and water saturation. The coefficients of the equation were found to correlate to the porous medium uniformity coefficient. With this equation and associated correlations, only bulk density, specific surface area, and uniformity coefficient are needed to estimate air-water interfacial area for a given water saturation. The equation was shown to provide a reasonable description of a literature data set.Citation: Peng, S., and M. L. Brusseau (2005), Impact of soil texture on air-water interfacial areas in unsaturated sandy porous media, Water Resour. Res., 41, W03021,

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Section: Resultsmentioning

confidence: 99%

Impact of soil texture on air‐water interfacial areas in unsaturated sandy porous media

Peng

Brusseau

2005

Water Resources Research

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“…Thus, sorption of VOCs may depend not only on the moisture content but also on the available surface area and organic carbon content of the soil system. Under unsaturated soil conditions, sorption studies have indicated that soil surface area and water content are the primary factors controlling vapor sorption of VOCs ( e g , Steinberg and Kreamer, 1993;Pennel et al, 1992;Yardon et al, 1989;Chiou and Shoup, 1985). In saturated soils, organic carbon content dominates the sorption process of VOCs (Karickhoff, 1984).…”

Section: Factors Affecting Sorptionmentioning

confidence: 99%

“…This assumption does not correctly reflect the processes occurring in unsaturated soils (Culver et al, 1991). Sorption studies have shown how an increase in the soil moisture greatly reduces the sorption of organics and volatile organics onto soils, in some cases by orders of magnitude (e.g., Chiou and Shoup, 1985;Peterson et al, 1988;Houston et al, 1989;Yardon et al, 1989;Steinberg and Kreamer, 1993).…”

Section: Sorption Measurementsmentioning

confidence: 99%

Fate and transport processes controlling the migration of hazardous and radioactive materials from the Area 5 Radioactive Waste Management Site (RWMS)

Estrella¹

1994

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“…However, both models ignored the vapor-solid interface adsorption of VOCs. Some studies have pointed out that in the unsaturated soils, VOC sorption is primarily a function of available mineral surface area, and OC plays only a minor role in sorption at low moisture contents (Yardon et al, 1989;Steinberg and Kreamer, 1993; Steinberg et al, 1996). For the site soil, the soil moisture content is highly heterogeneous from the saturated capillary zone to the dry zone near the surface.…”

Section: Introductionmentioning

confidence: 99%

Partitioning of Benzene in Soil Environment: The Critical Factor of Exposure

Zhang

Wang

Jiang

et al. 2021

Preprint

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Background: From the perspective of contaminated sites risk assessment, vapor-solid interface adsorption of volatile organic compounds (VOCs) in soil is thought to play a pivotal role because this greatly affects the release of VOCs into soil gas thus affecting the concentrations of intrusion and human exposure. Understanding the significance requires quantifying different forms of VOCs that occur in soil, but no relevant models have included the vapor-solid interface adsorption yet. Methods: This paper proposes the multiphase partitioning equilibrium (MPE) model that integrates vapor-solid adsorption phase for the first time. The MPE model establishes the quantitative relationship between the total VOC mass in soil and the mass in various partitioning phases. An equilibrium partitioning experiment was designed to verify the validity of the MPE model.Results: The error of the MPE model was basically within an order of magnitude. It also revealed that that the vapor-solid interface adsorption dominates benzene uptake in dry soil, but as reducing adsorption of soil minerals (vapor-solid interface adsorption) by increasing humidity, uptake by partitioning into the soil organic matter (OM) gradually dominates. Soil moisture was demonstrated the controlling factor that affects the partitioning. It was distinct that exposure concentration of benzene in indoor air rises from 0.0013 mg/m3 to 0.0070 mg/m3 when the sandy soil relative saturation increases an order of magnitude from 0.01.Conclusion: This study confirms the significance of VOCs partitioning in soil environment for human health exposure, in addition to frequently-mentioned exposure parameters and building parameters. The MPE model gives accurate mass/concentration prediction of VOCs phases in the soil system, and the relationship between exposure and soil moisture was proved.

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Soil pollution by petroleum products, II. Adsorption-desorption of “kerosene” vapors on soils

Cited by 20 publications

References 12 publications

Impact of soil texture on air‐water interfacial areas in unsaturated sandy porous media

Impact of soil texture on air‐water interfacial areas in unsaturated sandy porous media

Fate and transport processes controlling the migration of hazardous and radioactive materials from the Area 5 Radioactive Waste Management Site (RWMS)

Partitioning of Benzene in Soil Environment: The Critical Factor of Exposure

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