Simulation of surfactant‐enhanced aquifer remediation

Brown, Chris; Pope, Gary A.; Abriola, Linda M.; Sepehrnoori, Kamy

doi:10.1029/94wr01458

Cited by 105 publications

(48 citation statements)

References 28 publications

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“…Based on the estimated spatial variability of permeability and capillary parameters in the Borden aquifer, Kueper and Frind (1991) investigated the effect of local-scale heterogeneity on multiphase flow under different flow conditions. The transport of dense nonaqueous phase liquids (DNAPLs) and remediation in heterogeneous systems representing the Borden aquifer were also investigated by a number of researchers (e.g., Brown et al, 1994;Kueper and Gerhard, 1995;Mayer and Miller, 1996;Unger et al, 1998;Frind et al, 1999;Dekker and Abriola, 2000a,b). Jacobs (1999) derived the field-scale effective properties of multiphase flow in these two aquifers using spectral-perturbation analysis.…”

Section: Introductionmentioning

confidence: 99%

Flow and transport in unsaturated fractured rock: effects of multiscale heterogeneity of hydrogeologic properties

Zhou

Liu

Bodvarsson

et al. 2003

Journal of Contaminant Hydrology

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The heterogeneity of hydrogeologic properties at different scales may have different effects on flow and transport processes in a subsurface system. A model for the unsaturated zone of Yucca Mountain, Nevada, is developed to represent complex heterogeneity at two different scales: (1) layer scale corresponding to geologic layering and (2) local scale. The layer-scale hydrogeologic properties are obtained using inverse modeling, based on the available measurements collected from the Yucca Mountain site. Calibration results show a significant lateral and vertical variability in matrix and fracture properties. Hydrogeologic property distributions in a two-dimensional, vertical cross section of the site are generated by combining the average layer-scale matrix and fracture properties with local-scale perturbations generated using a stochastic simulation method. The unsaturated water flow and conservative (nonsorbing) tracer transport through the cross section are simulated for different sets of matrix and fracture property fields. Comparison of simulation results indicates that the local-scale heterogeneity of matrix and fracture properties has a considerable effect on unsaturated flow processes, leading to fast flow paths in fractures and the matrix. These paths shorten the travel time of a conservative tracer from the source (repository) horizon in the unsaturated zone to the water table for small fractions of total released tracer mass. As a result, the local-scale heterogeneity also has a noticeable effect on global tracer transport processes, characterized by an average breakthrough curve at the water table, especially at the early arrival time of tracer mass. However, the effect is not significant at the later time after 20% tracer mass reaches the water table. The simulation results also verify that matrix diffusion plays an important role in overall solute transport processes in the unsaturated zone at Yucca Mountain.

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Section: Introductionmentioning

confidence: 99%

Flow and transport in unsaturated fractured rock: effects of multiscale heterogeneity of hydrogeologic properties

Zhou

Liu

Bodvarsson

et al. 2003

Journal of Contaminant Hydrology

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“…4 indicates that ka is increased with increasing n-pentanol concentration and is essentially independent of the oil type. c) Incorporation of 80 into the function of ymin In our previous study 5, we have found an empirical correlation between 1mm and S* of the optimum surfactant formulations at 00=0.2 as follows Ymin KS (S*-b) (8) where, KS is the slope of the straight line; b is the abscissa of the intersection between this line and horizontal axis. b value represents the optimal salinity at which the system becomes one-phase microemulsion (ymu=0).…”

Section: Resultsmentioning

confidence: 99%

“…From the desired value of IFF, the S* required to bring the system to the optimum state, can be computed by Eq. (8). Eq.…”

Section: Resultsmentioning

confidence: 99%

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Optimum Surfactant Formulations for Removal of Residual Oil From the Contaminated Porous Media

Tien

Bettahar

Kumagai

2000

Doboku Gakkai Ronbunshu

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The objective of this work is to investigate the effect of oil fraction (9o) on optimal salinity (S*) and minimum water-oil interfacial tension (ymin). The results reveal that S* and ymm are changing upon changing 60. These results are in agreement with that of the column experiments. The formulation optimized at 9o equal to degree of oil saturation present in the column shows highest efficiency for oil recovery. The change of S* with 8o is described through the coefficient of oil fraction (kp), however, this change does not affect the parameters of the correlation between S* and ymm found in our previous study. These findings provide an useful tool for the selection of surfactant formulations for soil remediation.

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“…surfactant, co-solvent, or air sparging) remediation technologies. Most advanced simulators are based upon an adaptation of enhanced oil recovery models (Brown et al 1994;, and are predicated on assumptions of local thermodynamic equilibrium between phases. Some data from laboratory experiments of surfactant-enhanced solubilization and soil vapor extraction, however, indicate that local interphase mass transfer rates can severely limit DNAPL recovery (e.g.…”

mentioning

confidence: 99%

Development of Assessment Tools for Evaluation of the Benefits of DNAPL Source Zone Treatment

Abriola¹,

Goovaerts²,

Pennell³

et al. 2008

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Public reporting burden for the collection of information is estimated to average 1 hour per response, including the time for reviewing instructions, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing the collection of information. Send comments regarding this burden estimate or any other aspect of this collection of information, including suggestions for reducing this burden, to Washington Headquarters Services, Directorate for Information Operations and Reports, 1215 Jefferson Davis Highway, Suite 1204, Arlington VA 22202-4302. Respondents should be aware that notwithstanding any other provision of law, no person shall be subject to a penalty for failing to comply with a collection of information if it does not display a currently valid OMB control number. 5d. PROJECT NUMBER 5e. TASK NUMBER 5f. WORK UNIT NUMBER REPORT DATE SEP 20082 PERFORMING ORGANIZATION NAME(S) AND ADDRESS(ES) Tufts University PERFORMING ORGANIZATION REPORT NUMBER SPONSORING/MONITORING AGENCY NAME(S) AND ADDRESS(ES) 10. SPONSOR/MONITOR'S ACRONYM(S) SPONSOR/MONITOR'S REPORT NUMBER(S) DISTRIBUTION/AVAILABILITY STATEMENTApproved for public release, distribution unlimited SUPPLEMENTARY NOTESThe original document contains color images. Prescribed by This report was prepared under contract to the Department of Defense Strategic Environmental Research and Development Program (SERDP). The publication of this report does not indicate endorsement by the Department of Defense, nor should the contents be construed as reflecting the official policy or position of the Department of Defense. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise, does not necessarily constitute or imply its endorsement, recommendation, or favoring by the Department of Defense.iv Table of Our sincere thanks is extended to the members of the SERDP DNAPL Review Panel for their knowledge, insights and energy that helped keep us outcome focused and made this work stronger. We are also grateful to our Project Officers, for their invaluable assistance in financial management and most especially, helping us navigates the transfer of this contract to Tufts University. The SERDP staff has supported us in countless ways, always responding in a professional and cheerful manner. Our very special thanks are extended to Andrea Leeson and Jeff Marqusee, without whose vision and support this work would never have taken place. 1 Executive SummarySince its commencement in September 2002, SERDP Project ER-1293 has supported 4 doctoral students at three universities and resulted in over 40 conference proceedings/technical abstracts and over 20 peer-reviewed publications. These presentations and publications, as referenced in this final report, describe various aspects of the research investigations and tools that have been developed to enhance design and assessment of DNAPL source zone treatment. In general, research in ER-1293 has led to the devel...

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Simulation of surfactant‐enhanced aquifer remediation

Cited by 105 publications

References 28 publications

Flow and transport in unsaturated fractured rock: effects of multiscale heterogeneity of hydrogeologic properties

Flow and transport in unsaturated fractured rock: effects of multiscale heterogeneity of hydrogeologic properties

Optimum Surfactant Formulations for Removal of Residual Oil From the Contaminated Porous Media

Development of Assessment Tools for Evaluation of the Benefits of DNAPL Source Zone Treatment

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