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Type: Journal article
Title: Exact solution for coupled reactive flow and dissolution with porosity changes
Author: Altree-Williams, A.
Brugger, J.
Pring, A.
Bedrikovetsky, P.
Citation: Transport in Porous Media, 2018; 124(2):655-679
Publisher: Springer
Issue Date: 2018
ISSN: 0169-3913
Statement of
A. Altree-Williams; J. Brugger; A. Pring; P. Bedrikovetsky
Abstract: We derive exact solution for mineral-dissolution reactive flows in porous media with porosity variations. These conditions are relevant to injection of incompatible liquids into aquifers for disposal or waste storage, rock alteration during well stimulation by acidising or invasion of corrosive, far-from-equilibrium fluids related to ore deposit formation and heap or in situ leaching in mineral processing. Despite the porosity change making the one-dimensional flow equations nonlinear, the problem allows for exact integration, and a novel analytical model is developed. It allows presenting typical curves for breakthrough concentrations and porosity evolution. The exact solution provides a tool for predictive testing of reactive models that account for porosity creation. The analytical model derived exhibits high agreement with laboratory data, which validate the model.
Keywords: Reactive flow; mineral dissolution; porous media; porosity alteration; mathematical model
Rights: © Springer Science+Business Media B.V., part of Springer Nature 2018
DOI: 10.1007/s11242-018-1088-0
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Chemical Engineering publications

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