Impact of Mineral Precipitation on Flow and Mixing in Porous Media Determined by Microcomputed Tomography and MRI

dc.contributor.authorBray, Joshua A.
dc.contributor.authorLauchnor, Ellen G.
dc.contributor.authorRedden, George D.
dc.contributor.authorFujita, Yoshiko
dc.contributor.authorCodd, Sarah L.
dc.contributor.authorSeymour, Joseph D.
dc.date.accessioned2017-06-16T18:43:00Z
dc.date.available2017-06-16T18:43:00Z
dc.date.issued2017-02
dc.description.abstractPrecipitation reactions influence transport properties in porous media and can be coupled to advective and dispersive transport. For example, in subsurface environments, mixing of groundwater and injected solutions can induce mineral supersaturation of constituents and drive precipitation reactions. Magnetic resonance imaging (MRI) and microcomputed tomography (μ-CT) were employed as complementary techniques to evaluate advection, dispersion, and formation of precipitate in a 3D porous media flow cell. Two parallel fluids were flowed concentrically through packed glass beads under two relative flow rates with Na2CO3 and CaCl2 in the inner and outer fluids, respectively. CaCO3 became supersaturated and formed a precipitate at the mixing interface between the two solutions. Spatial maps of changing local velocity fields and dispersion in the flow cell were generated from MRI, while high resolution μ-CT imaging visualized the precipitate formed in the porous media. Formation of a precipitate minimized dispersive and advective transport between the two fluids and the shape of the precipitation front was influenced by the relative flow rates. This work demonstrates that the combined use of MRI and μ-CT can be highly complementary in the study of reactive transport processes in porous media.en_US
dc.identifier.citationBray JM, Lauchnor EG, Redden GD, Gerlach R, Fujita Y, Codd SL, Seymour JD, “Impact of Mineral Precipitation on Flow and Mixing in Porous Media Determined by Microcomputed Tomography and MRI,” Environmental Science & Technology, 2017 February 7; 51 (3), 1562-1569. doi: 10.1021/acs.est.6b02999en_US
dc.identifier.issn0013-936X
dc.identifier.urihttps://scholarworks.montana.edu/handle/1/13067
dc.titleImpact of Mineral Precipitation on Flow and Mixing in Porous Media Determined by Microcomputed Tomography and MRIen_US
dc.typeArticleen_US
mus.citation.extentfirstpage1562en_US
mus.citation.extentlastpage1569en_US
mus.citation.issue3en_US
mus.citation.journaltitleEnvironmental Science & Technologyen_US
mus.citation.volume51en_US
mus.data.thumbpage3en_US
mus.identifier.categoryEngineering & Computer Scienceen_US
mus.identifier.doi10.1021/acs.est.6b02999en_US
mus.relation.collegeCollege of Engineeringen_US
mus.relation.departmentCenter for Biofilm Engineering.en_US
mus.relation.departmentChemical & Biological Engineering.en_US
mus.relation.departmentChemical Engineering.en_US
mus.relation.departmentCivil Engineering.en_US
mus.relation.researchgroupCenter for Biofilm Engineering.en_US
mus.relation.universityMontana State University - Bozemanen_US

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