Linked Life Data

19324454

Source:http://linkedlifedata.com/resource/pubmed/id/19324454

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3-4
pubmed:dateCreated
2009-4-27
pubmed:abstractText
Diffusion is one of the main mechanisms of solute transport in pore water of geologic media. The effective diffusion coefficient of a solute in a rock is usually measured by the through-diffusion experiment. However, in this experiment, the effect of advection, induced by density difference between dense aqueous solution and pure water, has not been considered. To evaluate the effect of density-driven flow, a through-diffusion experiment using Fontainebleau sandstone was conducted for KCl and KI aqueous solutions with various densities. The measured effective diffusion coefficients were positively correlated with the density difference; the effective diffusion coefficient of a 1 M KI solution (density difference, 0.119 g/cm(3)) was one order of magnitude larger than that of a 0.1 M KCl solution (density difference, 0.005 g/cm(3)). The result is explained by a theoretical model using a diffusion-advection equation including Darcy's law. Based on the theory, a diagram to evaluate the condition at which the measured effective diffusion coefficient does not include the effect of advection is presented.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:month
May
pubmed:issn
1873-6009
pubmed:author
pubmed:issnType
Electronic
pubmed:day
12
pubmed:volume
106
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
166-72
pubmed:meshHeading
pubmed:year
2009
pubmed:articleTitle
Effect of density-driven flow on the through-diffusion experiment.
pubmed:affiliation
Department of Earth and Space Science, Graduate School of Science, Osaka University, Toyonaka, Japan. ykirino@ess.sci.osaka-u.ac.jp
pubmed:publicationType
Journal Article