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Determination of sorption properties of intact rock samples: New methods based on electromigration
KTH, School of Chemical Science and Engineering (CHE), Chemical Engineering and Technology, Chemical Engineering.
KTH, School of Industrial Engineering and Management (ITM), Industrial Ecology.ORCID iD: 0000-0002-4530-3414
KTH, School of Chemical Science and Engineering (CHE), Chemical Engineering and Technology, Chemical Engineering.
2009 (English)In: Journal of Contaminant Hydrology, ISSN 0169-7722, E-ISSN 1873-6009, Vol. 103, no 3-4, 71-81 p.Article in journal (Refereed) Published
Abstract [en]

Two new methods for determining sorption coefficients in large rock samples have been developed. The methods use electromigration as a means to speed up the transport process, allowing for fast equilibration between rock sample and tracer solution. An electrical potential gradient acts as a driving force for transport in addition to the concentration gradient and forces the cations through the rock sample towards the cathode. The electrical potential gradient induces both electromigration and electroosmotic flow with a resulting solute transport that is large compared to diffusive fluxes. In one of the methods, the solute is driven through the sample and collected at the cutlet side. In the other, simpler method, the rock sample is equilibrated by circulating the solute through the sample. The equilibration of rock samples, up to 5 cm in length, with an aqueous solution has been accomplished within days to months. Experiments using cesium as a sorbing tracer yield results consistent with considerably more time demanding in-diffusion experiments. These methods give lower distribution coefficients than those obtained using traditional batch experiments with crushed rock. (C) 2008 Elsevier B.V. All rights reserved.

Place, publisher, year, edition, pages
2009. Vol. 103, no 3-4, 71-81 p.
Keyword [en]
K-d, Ion exchange, Retardation, Sorption, Electromigration, Cesium, Granite, Intact rock, MIGRATION BEHAVIOR, UNIFIED MODEL, POROUS-MEDIA, BOOM-CLAY, CONDUCTIVITY, DIFFUSIVITY, STRONTIUM, MEMBRANE, MINERALS
National Category
Chemical Engineering
Identifiers
URN: urn:nbn:se:kth:diva-13628DOI: 10.1016/j.jconhyd.2008.09.006ISI: 000263009100001Scopus ID: 2-s2.0-58149165041OAI: oai:DiVA.org:kth-13628DiVA: diva2:326244
Note
QC 20100622Available from: 2010-06-22 Created: 2010-06-22 Last updated: 2017-12-12Bibliographically approved
In thesis
1. New Methods for the Determination of Sorption Capacities and Sorption-Related Properties of Intact Rock
Open this publication in new window or tab >>New Methods for the Determination of Sorption Capacities and Sorption-Related Properties of Intact Rock
2009 (English)Doctoral thesis, comprehensive summary (Other academic)
Place, publisher, year, edition, pages
Stockholm: KTH, 2009. viii, 77 p.
Series
Trita-CHE-Report, ISSN 1654-1081 ; 2009:19
National Category
Chemical Engineering
Identifiers
urn:nbn:se:kth:diva-10636 (URN)978-91-7415-332-3 (ISBN)
Public defence
2009-06-12, K1, KTH, Teknikringen, Stockholm, 10:00 (English)
Opponent
Supervisors
Note
QC 20100622Available from: 2009-06-08 Created: 2009-06-08 Last updated: 2011-10-10Bibliographically approved

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Malmström, Maria

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