Show simple item record

dc.contributor.authorZhong, Hua
dc.contributor.authorEl Ouni, Asma
dc.contributor.authorLin, Dan
dc.contributor.authorWang, Bingguo
dc.contributor.authorBrusseau, Mark L.
dc.date.accessioned2017-02-09T18:38:37Z
dc.date.available2017-02-09T18:38:37Z
dc.date.issued2016-07
dc.identifier.citationThe two-phase flow IPTT method for measurement of nonwetting-wetting liquid interfacial areas at higher nonwetting saturations in natural porous media 2016, 52 (7):5506 Water Resources Researchen
dc.identifier.issn00431397
dc.identifier.doi10.1002/2016WR018783
dc.identifier.urihttp://hdl.handle.net/10150/622507
dc.description.abstractInterfacial areas between nonwetting-wetting (NW-W) liquids in natural porous media were measured using a modified version of the interfacial partitioning tracer test (IPTT) method that employed simultaneous two-phase flow conditions, which allowed measurement at NW saturations higher than trapped residual saturation. Measurements were conducted over a range of saturations for a well-sorted quartz sand under three wetting scenarios of primary drainage (PD), secondary imbibition (SI), and secondary drainage (SD). Limited sets of experiments were also conducted for a model glass-bead medium and for a soil. The measured interfacial areas were compared to interfacial areas measured using the standard IPTT method for liquid-liquid systems, which employs residual NW saturations. In addition, the theoretical maximum interfacial areas estimated from the measured data are compared to specific solid surface areas measured with the N-2/BET method and estimated based on geometrical calculations for smooth spheres. Interfacial areas increase linearly with decreasing W-phase (water) saturation over the range of saturations employed. The maximum interfacial areas determined for the glass beads, which have no surface roughness, are 32 +/- 4 and 36 +/- 5 cm(-1) for PD and SI cycles, respectively. The values are similar to the geometric specific solid surface area (31 +/- 2 cm(-1)) and the N-2/BET solid surface area (28 +/- 2 cm(-1)). The maximum interfacial areas are 274 +/- 38, 235 +/- 27, and 581 +/- 160 cm(-1) for the sand for PD, SI, and SD cycles, respectively, and similar to 7625 cm(-1) for the soil for PD and SI. The maximum interfacial areas for the sand and soil are significantly larger than the estimated smooth-sphere specific solid surface areas (107 +/- 8 cm(-1) and 152 +/- 8 cm(-1), respectively), but much smaller than the N-2/BET solid surface area (1387 +/- 92 cm(-1) and 55224 cm(-1), respectively). The NW-W interfacial areas measured with the two-phase flow method compare well to values measured using the standard IPTT method.
dc.description.sponsorshipNIEHS Superfund Basic Research Program [P42 E504940]en
dc.language.isoenen
dc.publisherAMER GEOPHYSICAL UNIONen
dc.relation.urlhttp://doi.wiley.com/10.1002/2016WR018783en
dc.rights© 2016. American Geophysical Union. All Rights Reserved.en
dc.titleThe two-phase flow IPTT method for measurement of nonwetting-wetting liquid interfacial areas at higher nonwetting saturations in natural porous mediaen
dc.typeArticleen
dc.contributor.departmentUniv Arizona, Sch Earth & Environm Sci, Soil Water & Environm Sci Depten
dc.contributor.departmentUniv Arizona, Sch Earth & Environm Sci, Hydrol & Atmospher Sci Depten
dc.identifier.journalWater Resources Researchen
dc.description.noteFirst published: 24 July 2016; 6 month embargo.en
dc.description.collectioninformationThis item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.en
dc.eprint.versionFinal published versionen
dc.contributor.institutionSoil, Water, and Environmental Science Department; School of Earth and Environmental Sciences, University of Arizona; Tucson Arizona USA
dc.contributor.institutionSoil, Water, and Environmental Science Department; School of Earth and Environmental Sciences, University of Arizona; Tucson Arizona USA
dc.contributor.institutionSoil, Water, and Environmental Science Department; School of Earth and Environmental Sciences, University of Arizona; Tucson Arizona USA
dc.contributor.institutionSoil, Water, and Environmental Science Department; School of Earth and Environmental Sciences, University of Arizona; Tucson Arizona USA
dc.contributor.institutionSoil, Water, and Environmental Science Department; School of Earth and Environmental Sciences, University of Arizona; Tucson Arizona USA
refterms.dateFOA2017-01-25T00:00:00Z
html.description.abstractInterfacial areas between nonwetting-wetting (NW-W) liquids in natural porous media were measured using a modified version of the interfacial partitioning tracer test (IPTT) method that employed simultaneous two-phase flow conditions, which allowed measurement at NW saturations higher than trapped residual saturation. Measurements were conducted over a range of saturations for a well-sorted quartz sand under three wetting scenarios of primary drainage (PD), secondary imbibition (SI), and secondary drainage (SD). Limited sets of experiments were also conducted for a model glass-bead medium and for a soil. The measured interfacial areas were compared to interfacial areas measured using the standard IPTT method for liquid-liquid systems, which employs residual NW saturations. In addition, the theoretical maximum interfacial areas estimated from the measured data are compared to specific solid surface areas measured with the N-2/BET method and estimated based on geometrical calculations for smooth spheres. Interfacial areas increase linearly with decreasing W-phase (water) saturation over the range of saturations employed. The maximum interfacial areas determined for the glass beads, which have no surface roughness, are 32 +/- 4 and 36 +/- 5 cm(-1) for PD and SI cycles, respectively. The values are similar to the geometric specific solid surface area (31 +/- 2 cm(-1)) and the N-2/BET solid surface area (28 +/- 2 cm(-1)). The maximum interfacial areas are 274 +/- 38, 235 +/- 27, and 581 +/- 160 cm(-1) for the sand for PD, SI, and SD cycles, respectively, and similar to 7625 cm(-1) for the soil for PD and SI. The maximum interfacial areas for the sand and soil are significantly larger than the estimated smooth-sphere specific solid surface areas (107 +/- 8 cm(-1) and 152 +/- 8 cm(-1), respectively), but much smaller than the N-2/BET solid surface area (1387 +/- 92 cm(-1) and 55224 cm(-1), respectively). The NW-W interfacial areas measured with the two-phase flow method compare well to values measured using the standard IPTT method.


Files in this item

Thumbnail
Name:
Zhong_et_al-2016-Water_Resourc ...
Size:
462.5Kb
Format:
PDF
Description:
Final Published Version

This item appears in the following Collection(s)

Show simple item record