VOC Vapor Sorption in Soil: Soil Type Dependent Model and Implications for Vapor Extraction
Publication: Journal of Environmental Engineering
Volume 124, Issue 2
Abstract
Vapor sorption of volatile organic chemicals (VOC) to soil minerals becomes the dominant VOC sorption mechanism at low soil-water contents, but is not included in traditional VOC transport and fate models. A two-parameter model for trichloroethylene (TCE) vapor sorption as a function of soil-water content is suggested, and expressions for predicting the model parameters as function of soil type [cation exchange capacity (CEC)] are developed based on measurements for 15 soils from the literature. The vapor sorption model was used in combination with a two-dimensional VOC transport model to evaluate the effect of vapor sorption on TCE transport in the unsaturated zone under both natural conditions and in connection with soil vapor extraction systems. The effects of variations in soil-water content, soil CEC, and soil-vapor extraction rate were investigated. Temporal and spatial variations in soil-water content caused pronounced fluctuations in the volatilization of TCE to the atmosphere. Soil type (CEC) strongly affected vapor sorption and controlled TCE transport under dry conditions. The simulations imply that vapor sorption can result in increased clean-up times, especially when using vapor extraction in arid regions.
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References
1.
Amali, S., Petersen, L. W., Rolston, D. E., and Moldrup, P.(1994). “Modeling multicomponent volatile organic and water adsorption on soils.”J. Haz. Mat., 36, 89–108.
2.
Banin, A., and Amiel, A.(1970). “A correlative study of the chemical and physical properties of a group of natural soils of Israel.”Geoderma, 3, 185–198.
3.
Batterman, S., Kulshrestha, A., and Cheng, H.(1995). “Hydrocarbon vapor transport in low moisture soils.”Envir. Sci. and Technol., 29(1), 171–180.
4.
Benson, D. A., Huntley, D., and Johnson, P. C.(1993). “Modeling vapor extraction and general transport in the presence of NAPL mixtures and nonideal conditions.”Ground Water, 31(3), 437–445.
5.
Brown, R., Herman, C., and Henry, E. (1991). “The use of aeration in environmental clean-ups.” Proc., Haztech Int. Pittsburgh Conf., Cleveland, Ohio, 2A1–2A42.
6.
Chiacek, L. J., and Bremner, J. M.(1979). “A simplified ethylene glycol monoethyl ether procedure for assessment of soil surface area.”Soil Sci. Soc. Am. Proc., 43, 821–822.
7.
Chiou, C. T., and Shoup, T. D. (1985). “Soil sorption of organic vapors and effects of humidity on sorptive mechanism and capacity. Envir. Sci. and Technol., 19(12), 1196–1200.
8.
Culver, T. B., Shoemaker, C. A., and Lion, L. W.(1991). “Impact of vapor sorption in the subsurface transport volatile organic compounds: A numerical model and analysis.”Water Resour. Res., 27(9), 2259–2270.
9.
English, C. W., and Loehr, R. C. (1990). “Removal of organic vapors in unsaturated soil.”J. Haz. Mat., 24(2–3), 297–308.
10.
Fan, S., and Scow, K. M.(1993). “Biodegradation of trichloroethylene and toluene by indigenous microbial populations in soil.”Appl. Envir. Microbiology, 50(6), 1911–1918.
11.
Hansen, L.(1976). “Soil types at the Danish state experimental stations” (in Danish). Tidsskrift for Planteavl, 80, 742–758.
12.
Howard, P. H., Boethling, R. S., Jarvis, W. F., Meylan, W. M., and Michalenko, E. M. (1991). Handbook of environmental degradation rates. Lewis Publishers, Chelsea, Mich.
13.
Jury, W. A., Russo, D., Streile, G., and El Abd, H.(1990). “Evaluation of volatilization by organic chemical residing below the soil surface.”Water Resour. Res., 26(1), 13–20.
14.
Kavanaugh, M. C.(1996). “Contaminant site remediation: technology vs. public policy.”Water Envir. Res., 68(6), 963–964.
15.
Kearl, P. M., Korte, N. E., Gleason, T. A., and Beale, J. S.(1991). “Vapor extraction experiments with laboratory soil columns: implications for field programs.”Waste Mgmt., 11, 21–29.
16.
Krishnyya, A. V., Williams, D. R., Agar, J. G., and O'Connor, M. J.(1994). “Significance of organic chemical adsorption in soil and groundwater remediation.”J. Soil Contam., 3(2), 191–201.
17.
Lin, T., Van Loy, M. D., and Nazaroff, W. W.(1996). “Gas phase transport and sorption of benzene in soil.”Envir. Sci. and Technol., 30(7), 2178–2186.
18.
Lingieni, S., and Dihr, V. K.(1992). “Modeling venting processes to remediate unsaturated soils.”J. Envir. Engrg., ASCE, 118(1), 135–152.
19.
Martel, Y. A., De Kimpe, C. R., and Laverdière, M. R.(1978). “Cation-exchange capacity of clay-rich soils in relation to organic matter, mineral composition, and surface areas.”Soil Sci. Soc. Am. Proc., 42, 764–767.
20.
Moldrup, P., Poulsen, T. G., Rolston, D. E., Yamaguchi, T., and Hansen, J. Aa.(1994). “Integrated flux model for unsteady transport of trace organic chemicals in soils.”Soil Sci., 157, 137–152.
21.
Mualem, Y.(1976). “A new model for predicting the hydraulic conductivity of unsaturated porous media.”Water Resour. Res., 12, 513–522.
22.
Ong, S. K., and Lion, L. W.(1991a). “Effects of soil properties and moisture on the sorption of trichloroethylene vapor.”Water Res., 25(1), 29–36.
23.
Ong, S. K., and Lion, L. W.(1991b). “Mechanisms for trichloroethylene vapor sorption onto soil minerals.”J. Envir. Quality, 20, 180–188.
24.
Ong, S. K., Culver, T. B., Lion, L. W., and Shoemaker, C. A.(1992). “Effects of soil moisture and physical-chemical properties of organic pollutants on vapor-phase transport in the vadose zone.”J. Contam. Hydrol., 11, 273–29.
25.
Petersen, L. W. (1994). “Transport and fate of volatile organic chemicals in soils: influence of soil physical properties.” PhD thesis, Aalborg Univ., Denmark.
26.
Petersen, L.W., Rolston, D. E., Moldrup, P., and Yamaguchi, T.(1994). “Volatile vapor diffusion and adsorption in soils.”J. Envir. Quality, 23, 799–805.
27.
Petersen, L. W., Moldrup, P., El-Farhan, Y., Jacobsen, O. H., Yamaguchi, T., and Rolston, D. E.(1995). “The effect of moisture and soil texture on the adsorption of organic vapors.”J. Envir. Quality, 24, 752–759.
28.
Petersen, L. W., Moldrup, P., Jacobsen, O. H., and Rolston, D.E.(1996a). “Relations between specific surface area and soil physical and chemical properties.”Soil Sci., 161(1), 1–13.
29.
Petersen, L. W., El-Farhan, Y., Moldrup, P., Rolston, D. E., and Yamaguchi, T.(1996b). “Transient diffusion and emission of volatile organic vapors in soils with fluctuating low water contents.”J. Envir. Quality, 25, 1054–1063.
30.
Poulsen, T. G., Massmann, J. W., and Moldrup, P.(1996). “Effects of vapor extraction on contaminant flux to atmosphere and ground water.”J. Envir. Engrg., 122(8), 700–706.
31.
Rathfelder, K., Yeh, W. W-G., and Mackay, D.(1991). “Mathematical simulation of soil vapor extraction systems: model development and numerical examples.”J. Contam. Hydrol., 8, 263–297.
32.
Rose, C. W.(1968). “Water transport in soil with a daily temperature wave I: theory and experiment.”Aust. J. Soil Res., 6, 31–44.
33.
Schwille, F. (1988). Dense chlorinated solvents in porous and fractured media—model experiments. Lewis Publishers, Chelsea, Mich.
34.
Shah, F. H., Hadim, H. A., and Korfiatis, G. P.(1995). “Laboratory studies of air stripping of VOC-contaminated soils.”J. Soil Contam., 4(1), 93–109.
35.
Shimizu, Y., Takei, N., and Terashima, Y. (1992). “Sorption of organic pollutants from vapor phase: the effects of natural solid characteristics and moisture content.”Water Sci. and Tech., 26(1–2), 79–87.
36.
Shimizu, Y., Takei, N., and Terashima, Y.(1994). “Roles of solid components on the sorption of trichloroethylene (TCE) onto solids from the vapor phase.”Water Sci. Tech., 30(7), 1–11.
37.
Shoemaker, C. A., Culver, T. B., Lion, L. W., and Petersen, M. G.(1990). “Analytical models of the impact of two phase sorption on subsurface transport of volatile chemicals.”Water Resour. Res., 26(4), 745–758.
38.
Smith, J. A., Chiou, C. T., Kammer, J. A., and Kile, D. E.(1990). “Effect of soil moisture on the sorption of trichloroethylene vapor to vadose-zone soil at Picatinny Arsenal, New Jersey.”Envir. Sci. and Technol., 24(5), 676–683.
39.
Sterrett, R. J. (1989). “Analysis of in-situ air stripping data.”Workshop on soil vacuum extraction, April 27–28. US EPA Robert S Kerr Res. Lab., Ada, Okla.
40.
Thompson, M. L., Zhang, H., Kazemi, M., and Sandor, J. A.(1989). “Contribution of organic matter of cation exchange capacity and specific surface area of fractionated soils and minerals.”Soil Sci., 148(4), 250–257.
41.
Tiller, K. G., and Smith, L. H.(1990). “Limitations of EGME retention to estimate the surface area of soils.”Aust. J. Soil Res., 28, 1–26.
42.
Unger, D. R., Lam, T. L., Schaefer, C. E., and Kosson, D. S.(1996). “Predicting the effect of moisture on vapor phase sorption of volatile organic compounds to soils.”Envir. Sci. and Technol., 30(4), 1081–1091.
43.
Yamaguchi, T., Farcasanu, R. I., Muldrup, P., Petersen, L. W., and Rolston, D. E. (1996). “Effects of soil-water content on adsorption of volatile organic chemicals in soils.”Proc., of the 2nd Int. Congr. on Envir. Geotechnics, Osaka, Japan, 1125–1130.
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Copyright © 1998 American Society of Civil Engineers.
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Published online: Feb 1, 1998
Published in print: Feb 1998
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