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Fagerlund, F., T.H. Illangasekare and A. Niemi. 2007. NAPL infiltration and immobilization in heterogeneous media. 2. Application to stochastically heterogeneous formations. Vadose Zone J. 6:483-495. doi:10.2136/vzj2006.0172 Fagerlund, F., A. Niemi and T.H. Illangasekare. 2007. Modeling of NAPL migration in heterogeneous saturated media: Effects of hysteresis and fluid immobility in constitutive relations. Accepted for publication in Water Resources Research. Sakaki, T., and T. H. Illangasekare (2007), Comparison of height-averaged and point-measured capillary pressure-saturation relations for sands using a modified Tempe cell, Water Resour. Res., doi:10.1029/2006WR005814, in press. Sakaki, T., and H. Rajaram, 2006. Performance of different types of TDR probes for water content measurement in partially saturated rocks, Water Resources Research, 42, W07404, doi:10.1029/2005WR004643. (pdf) M.A. Urynowicz, R.L. Siegrist, 2005. Interphase mass transfer during chemical oxidation of TCE DNAPL in an aqueous system. Journal of Contaminant Hydrology 80(3-4):93-106. D.N.H. Beach, J.E. McCray, K.S. Lowe, R.L. Siegrist, 2005. Temporal changes in hydraulic conductivity of sand porous media biofilters during wastewater infiltration due to biomat formation. Journal of Hydrology 311(2005):230-243. J.E. McCray, S.L. Kirkland, R.L. Siegrist, G.D. Thyne, 2005. Model parameters for simulating fate and transport of onsite-wastewater nutrients. Ground Water 43(4):628-639. R.L. Siegrist, J.E. McCray, K.S. Lowe, 2004. Wastewater infiltration into soil and the effects of infiltrative surface architecture. Small Flows Journal 5(1):29-39. C. Kechavarzi, K. Soga, T.H. Illangasekare, 2005. Two-dimensional laboratory simulation of LNAPL infiltration and redistribution in the vadose zone. Journal of Contaminant Hydrology 76, 211-233. D. Fernando-Garcia, T.H. Illangasekare, H. Rajaram, 2004. Conservative and sorptive forced-gradient and uniform flow tracer tests in a threedimensional laboratory test aquifer. Water Resources Research 40 (10), W10103. D. Fernando-Garcia, T.H. Illangasekare, H. Rajaram, 2005. Differences in the scale-dependence of dispersivity estimated from temporal and spatial moments in physically and chemically heterogeneous porous media. Advances in Water Resources (ISSN 0309-1708), Vol. 28, 745-759. D. Fernàndez-Garcia, T.H. Illangasekare, H. Rajaram, 2005. Differences in the scale-dependence of dispersivity and retardation factors estimated from forced-gradient and uniform flow tracer tests in three-dimensional physically and chemically heterogeneous porous media. Water Resources Research (ISSN 0043-1397), Vol. 41, W03012, doi:10.1029/2004WR003125. D. Fernàndez-Garcia, H. Rajaram, T.H. Illangasekare, 2005. Assessment of the predictive capabilities of stochastic theories in a three-dimensional laboratory test aquifer: Effective hydraulic conductivity and temporal moments of breakthrough curves. Water Resources Research (ISSN 0043-1397), Vol. 41, W04002, doi:10.1029/2004WR003523. E. Moreno-Barbero, T.H. Illangasekare, 2005. Simulation and performance assessment of partitioning tracer tests in heterogeneous aquifers. In print in Environmental & Engineering Geoscience, Vol. XI, No. 4, pp395-404. J.E. McCray, S.L. Kirkland, R.L. Siegrist, G.D. Thyne, 2005. Transportmodel input parameters for onsite-wastewater nutrients. Ground Water 43(4), 628-639. D.N.H. Beach, J.E. McCray, K.S. Lowe, R.L. Siegrist, 2005. Temporal changes in hydraulic conductivity of sand porous-media biofilters during wastewater infiltration: Experimental evaluation. Journal of Hydrology 311, 230-243. C.E. Divine, J.E. McCray, 2004. Estimation of membrane diffusion coefficients and equilibration times for LDPE passive diffusion samplers. Environmental Science & Technology 38(6); 1849-1857. C. Bellona, J.E. Drewes, P. Xu, G. Amy, 2004. Factors affecting the rejection of organic solutes during NF/RO treatment – A literature review. Water Research 38, 2795-2809. T. Kim, G. Amy, J.E. Drews, 2005. Rejection of trace organic compounds by high-pressure membranes. Water Science & Technology 51, 6-7, 335-344. P. Xu, J.E. Drews, T. Kim, C. Bellona, G. Amy, 2006. Effect of membrane fouling on transport of organic contaminants in NF/RO membrane applications. Journal of Membrane Science (in press). P. Xu, J.E. Drewes, 2006. Viability of nanofiltration and ultra low pressure reverse osmosis membranes for multi-beneficial use of methane produced water. Separation and Purification Technology (in press). C. Bellona, J.E. Drewes, 2005. The role of physico-chemical properties of membranes and solutes for rejection of organic acids by nanofiltration membranes. Journal of Membrane Science 249, 1-2, 227-234. P. Xu, J.E. Drewes, C. Bellona, G. Amy, T. Kim, M. Adam, T. Heberer, 2005. Rejection of emerging organic micropollutants in nanofiltration/reverse osmosis membrane applications. Water Environment Research 77, 1, 40-48. R.L. Siegrist, K.S. Lowe, M.L. Crimi, M.A. Urynowicz, 2006. Quantifying PCE and TCE in DNAPL source zones: Effects of sampling methods used for intact cores at varied contaminant levels and media temperatures. Journal of Ground Water Monitoring and Remediation. Accepted and in press. M.L. Crimi, R.L. Siegrist, 2005. Factors affecting effectiveness and efficiency of DNAPL destruction using potassium permanganate and catalyzed hydrogen peroxide. Journal of Environmental Engineering 131(12):1716-1723.
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Presentations |
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Illangasekare, T. and Saenton, S. 2004. Application of stochastic methods in the study of fluid Flow, solute transport, and multiphase fluid behavior in hetergeneous porous media , Proceedings of the Tenth Asian Congress of Fluid Mechanics, Peradeniya, Sri Lanka, May 17-21. [paper] Saenton, S. and Illangasekare, T.H. 2003. Determining the entrapment architecture in the DNAPL source zone using downgradient mass flux measurements: A combined numerical and stochastic study. E.P. Poeter, C. Zheng, M.C. Hill, and J. Doherty (Editors) In, Proceeding of MODFLOW and More 2003: Understanding through Modeling, Vol. 2, pp. 615-619. Golden, CO, U.S.A. [paper] Illangasekare, T. 2002. Partial Source Zone Treatment at DNAPL Contaminated Sites: Issues of Heterogeneity , Characterization, Mass Transfer and Up-scaling, American Geophysical Union, Fall Meeting Abstracts, vol. 83 (47).Gago, Jose L., Middleton, Gareth, Hill, Edward H. III, and Tissa, Illangasekare, 2002. Real Time Monitoring Of Napl Sources Using Photon Attenuation Techniques On Chlorinated Solvents. Geological Society of America, 2002 Denver Annual Meeting (October 27-30, 2002). Glover, K.C., Hill, E.H., III, and Illangasekare, T.H., 2002. High-resolution monitoring of NAPL saturation in heterogeneous porous media: Application of x-ray attenuation techniques to chlorinated solvents and a nontoxic surrogate. Geological Society of America Abstracts with Programs, vol. 34, no. 6, September 2002. Moreno-Barbero, Elena; Dai, D.; Saenton, S. and Illangasekare, T.H., 2002. Evaluation of the partition interwell tracer technique for possible characterization of dnapl pools. Geological Society of America, Fall Annual Meeting. Abstracts with Programs, vol. 34, no. 6, September 2002. Moreno-Barbero, Elena; Dai, D. and Illangasekare, T.H., 2002. Evaluation of the partition interwell tracer technique for possible characterization of dnapl pools. American Geophysical Union, 2002 Fall Meeting Abstracts, vol. 83 (47.) Woodward, Christy A., Illangasekare, Tissa, Bielefeldt, Angela, and Dai, Dongping, Bruce Henry, 2002. Vegetable Oil Delivery Techniques for use as a Carbon Source in the Reductive Dechlorination of Chlorinated Solvents in Saturated Porous Media. The Geological Society of America, Fall Annual Meeting. Abstracts with Programs, Vol. 83, no. 12, September 2002. Illangasekare, T.H., 2002. Evaluation of benefits of partial source zone treatment using intermediate-scale physical model testing and numerical analysis, Geological Society of America, Fall Annual Meeting. Abstracts with Programs, Vol. 83, no. 12, September 2002. Hwang, C and T.H. Illangasekare, 2002. Automated method for determination of retention and relative permeability functions for multiphase flow systems, Geological Society of America, Fall Annual Meeting. Abstracts with Programs, Vol. 83, no. 12, September 2002. Saenton, S., D. Dai and T.H. Illangasekare, 2002. Upscaling of mass transfer from entrapped dnapl zones: an experimental and a modeling study, Geological Society of America, Fall Annual Meeting. Abstracts with Programs, Vol. 83, no. 12, September 2002. Schakel, S. T.H. Illangasekare, D. Dai, A. Bielefeldt and B. Henry, 2002. An Experimental Study Of Behavior Of Vegetable Oil Emulsions In Sandy Soils Associated With DNAPL Site Remediation, Geological Society of America, Fall Annual Meeting. Abstracts with Programs, Vol. 83, no. 12, September 2002. Garcia, D.F., T.H. Illangasekare and H. Rajaram, 2002. Laboratory sorptive and non-reactive tracer tests in a highly heterogeneous synthetic aquifer, Geological Society of America, Fall Annual Meeting. Abstracts with Programs, Vol. 83, no. 12, September 2002. Saenton, S. D. Dai and T.H. Illangasekare upscaling of multiple tracers technique for characterizing napl entrapment zones: intermediate-scale testing and numerical modeling, 2001 Conference on Environmental Research, Manhattan, KS, May 21-24. Cort, T., Davis, C.A., Dai, D., Illangasekare, T.H. and Munakata-Marr, J. (2001) Intermediate-scale evaluation of bioremediation technologies in heterogeneous LNAPL-contaminated soil, 2001 Conference on Environmental Research, Manhattan, KS, May 21-24. Moore, Q, T. H. Illangasekare and Dongping Dai, (2001). Validation of Multimedia Models Simulating the Fate and Transport of Non-aqueous Phase Liquid Contamination in the Subsurface, 2001 Conference on Environmental Research, Manhattan, KS, May 21-24. Prucha, B. and T.H. Illangasekare, 2001. Integrated modeling to investigate groundwater recharge in arid/semi-arid environments, Danish Hydraulic Institute Conference, Summer 2001. Prucha, B. and T.H. Illangasekare, 2001. Conceptual and modeling framework to investigate groundwater recharge in arid/semi-arid environments, American Geophysical Union, Fall Meeting, San Francisco, December 2001. Ramaswami, A., T.H. Illangasekare, and A. Bilefeldt, 2001. Biostabilization of Multicomponent Dense Non-Aqueous Phase Liquids (DNAPLs), retention and Containment Conference, Orlando FL, June 2001. Illangasekare, T.H.D. Dai and John Ewing, 2000. LNAPL dissolution in aqueous liquid: laboratory column evaluation and numerical simulation, Presented at 2000 Conference on Hazardous Waste Research, Denver, Colorado. Barranco, F.T. Jr. , T. Saba, D.Dai1, T. H. Illangasekare, D. Mauldin, K. Vogler, and M. Klein, 2000. A multi-scale laboratory assessment of cleanup endpoints for a NAPL-contaminated site, Presented at 2000 Conference on Hazardous Waste Research, Denver, Colorado. Bielefeldt, A.R., T. H. Illangasekare, and R. LaPlante, 2000. The impact of biodegradation of de-icing chemicals in sand columns on the conductivity and dispersivity of the porous media, Presented at 2000 Conference on Hazardous Waste Research, Denver, Colorado. Davis, C.A., T. H. Illangasekare, F. T. Barranco Jr., D. Mauldin, K. Vogler, 2000 Comparative analysis of respirometry and diesel degradation, Presented at 2000 Conference on Hazardous Waste Research, Denver, Colorado. Richard, R., T.H. Illangasekare, A. Bielefeldt, and A. Ramaswami, 2000. The effects of microbial growth and transport on soil characteristics: a one dimensional analysis, Presented at 2000 Conference on Hazardous Waste Research, Denver, Colorado. Vestal, E.W., A. Bielefeldt, K. Morrison, A. Ramaswami4, T. H. Illangasekare. Estimation of Styrene Inhibition and Induction Kinetic Parameters on a Mixed Consortium of PAH-Degrading Bacteria: Implications for Modeling and Designing Bioisolation Schemes, Presented at 2000 Conference on Hazardous Waste Research, Denver, Colorado. Garcia, D.F., T.H. Illangasekare, H. Rajaram, 2000. A three-dimensional physical model tests to evaluate transport parameters in heterogeneous aquifers, Geological Society of America, Reno. Illangasekare, T.H., D. Dai, Q. R. Moore and S. Saenton, 2000. Intermediate-scale experiments for validation of models for NAPL dissolution and multiple tracer behavior, Geological Society of America, Reno. Illangasekare, T.H.,T. Saba, F. Barranco, Jr., and D. Dai, 2000. Pilot-Scale Laboratory Evaluation of Subsurface Restoration Technologies for a Diesel-Contaminated Site, Geological Society of America, Reno. Illangasekare, T.H., D. F. Garcia and H. Rajaram, 2000. Evaluation of transport parameters in heterogeneous aquifers using intermediate-scale model testing and transport modeling, Presented at the American Geophysical Union Fall Meeting, San Francisco.
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Posters |
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Porta, L., Illangasekare, T.H., Loden, P., Liptak, D., Han, Q., and Jayasumana, A.P. 2006. Wireless sensor network continuous plume monitoring and model calibration: proof of concept in intermediate-scale tank test. American Geophysical Union, 2006 Fall Meeting, Poster No. H41B-0420. (poster) Rodriguez, D., Wilking, B., Illangasekare, T.H., Sale, T., and Zyvoloski, G. 2006. Study of the longevity of solute plumes emanating from heterogeneous DNAPL source zones: intermediate-scale test demonstration and model evaluation. American Geophysical Union, 2006 Fall Meeting, Poster No. H11C-1261. Sakaki, T., and T. H. Illangasekare (2006), Retention curve measurement for sands using a TDR-based long column and modified Tempe cell, AGU Fall meeting, Poster No. H51-0462, December 11-15, San Francisco, CA. (poster) Sakaki, T., M. Komatsu, and T. H. Illangasekare (2006), Preliminary exploration of dynamic effect in field soil retention curves: Direct laboratory quantification of material coefficient, AGU Fall meeting, Poster No. H51-0463, December 11-15, San Francisco, CA. (poster) Sakaki, T., S. E. Howington, J. P. Hallberg, and T. H. Illangasekare (2006), Improved Subsurface Model Calibration Using Soft Data on Geologic Heterogeneity, AGU Fall meeting, Poster No. H43-0476, December 11-15, San Francisco, CA. (poster) Sakaki, T., and T. H. Illangasekare (2006), Improved subsurface model calibration using soft data on geologic heterogeneity, Philadelphia Annual Meeting, October 22-25, Geological Society of America Abstracts with Programs, Vol. 38, No. 7, p. 111, Paper No. 40-9, Philadelphia Convention Center, Pennsylvania. Barnhart, K., T. H. Illangasekare, F. Fagerlund, T. Sakaki, D. W. Dean, and T. F. Russell (2006), DNAPL flow in heterogeneous porous media: A multi-scale stochastic approach, Czech-Japanese Seminar in Applied Mathematics 2006, September 14-16, Czech Technical University, Prague, Czech Republic. (poster) Sakaki, T., T. H. Illangasekare, and M. Komatsu (2006), Parameter estimation in a heterogeneous synthetic aquifer with different quantities of information on geologic features, MODFLOW 2006 and more, May 22-24, Colorado School of Mines, Golden CO., 71-75. Sakaki, T., and T. H. Illangasekare (2006), Tempe cell based static capillary pressure – saturation relationships for sands: Conventional averaging method vs. point measurement, Hydrology Days, Poster No. 24, March 20-22, Colorado State University, Fort Collins, CO. Dean, D., T. Russell, K. Barnhart, T. H. Illangasekare, F. Fagerlund, M. Mathew, T. Sakaki (2006), A stochastic differential equation approach for modeling DNAPL flow in heterogeneous porous media, Hydrology Days, March 20-22, Poster No. 21, Colorado State University, Fort Collins, CO. Sakaki, T., T. H. Illangasekare, and M. Komatsu (2005), Dependence of uncertainty in parameter estimation in non-stationary heterogeneous aquifers on the number and spatial distribution of observation wells, AGU Fall meeting, Poster No. H13D-1358, December 5-9, San Francisco, CA. Dean, D., T. Russel, K. Bernhart, T. H. Illangasekare, F. Fagerlund, M. Mathew, T. Sakaki (2005), A Lagrangian to characterizing dispersion in heterogeneous porous media, AGU Fall meeting, December 5-9, San Francisco, CA.
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Thesis and Dissertations |
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Kent Glover, 2006. Microbe-enhanced dissolution of non-aqueous phase tetrachloroethene in naturally heterogeneous subsurface source zones : a multiscale study. Ph.D. Dissertation. (link) Derrick Rodriguez, 2006. Significance of diffused zone mass storage and rebound in determining the longevity of solute plumes emanating from heterogenous DNAPL source zones. Ph.D. Dissertation. (link) Jeff Heiderscheidt, 2005. DNAPL source zone depletion during in situ chemical oxidation (ISCO): experimental and modeling studies. Ph.D. Dissertation. Elena Moreno-Barbero, 2005. Evaluation of the partition interwell tracer test and extension to determine DNAPL architecture in heterogeneous media. Ph.D. Dissertation. Alan Turner, 2004. Behavior of dense non-aqueous phase liquids at soil interfaces of heterogeneous formations: experimental methods and physical model testing. M.S. Thesis. Ann Kaplan, 2004. The effects of DNAPL biodegradation on mass transfer and alchohol tracer partitioning coefficients. M.S. Thesis. Shannon Ullmann, 2004. Use of emulsified vegetable oil for remediation of DNAPL sites : experimental evaluation of emulsion behavior and characterization using tracers. M.S. Thesis. Bart Wilking, 2004. Factors controlling matrix storage during DNAPL mass depletion in heterogeneous porous media. M.S. Thesis. Satawat Saenton, 2003. Prediction of mass flux from DNAPL source zone with complex entrapment architecture : model development, experimental validation, and up-scaling. Ph.D. Dissertation. Daniel Fernandez Garcia, May 2003. Scale –dependence of non-reactive and sorptive transport parameters estimated from radial and uniform flow tracer tests in heterogeneous formations: experimental and numerical investigations. Ph.D. Dissertation. Derek L. Richard, May 2001. The effects of polycyclic aromatic hydrocarbon-degrading bacteria of flow and transport characteristics of sand in the absence of substrate. M.S. Thesis.
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Technical Reports |
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Demonstrations of NAPL behavior |
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