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2 results on '"phase-shift interferometry"'

1. Saturation states dependence of feldspar dissolution rate: Sensitivity to the timescale of geochemical processes on CO2 geological sequestration.

Author

Sorai, Masao and Sasaki, Munetake

Subjects
GEOLOGICAL carbon sequestration, FELDSPAR, SOLUTION (Chemistry), GEOCHEMICAL modeling, INTERFEROMETRY, OIL saturation in reservoirs
Abstract

Abstract: For the long-term assessment of CO2 geological sequestration, the dissolution rate of feldspar was measured under various degrees of saturation based on observations of the time-course change of dissolved crystal surfaces on a nanoscale. We identified that the dependence of solution saturation state on anorthite dissolution rate follows to a L-shaped function, rather than to a linear function. Compared with a linear assumption, such a nonlinear form provides a much lower estimate of dissolution rate. This implies that the difference of rate formula can cause meaningful errors in the timescale evaluation of various geochemical processes. In this study, therefore, the effect of the function form of dissolution rate was also checked using the geochemical simulation code to analyze CO2 geological sequestration. [Copyright &y& Elsevier]

Published
2009
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2. Saturation states dependence of feldspar dissolution rate: Sensitivity to the timescale of geochemical processes on CO2 geological sequestration

Author

Munetake Sasaki and Masao Sorai

Subjects
Dissolution rate, Materials science, CO2 geological sequestration, Mineralogy, engineering.material, Feldspar, Anorthite, Gibbs free energy, Nonlinear system, symbols.namesake, Phase shifting interferometry, Geological sequestration, Energy(all), visual_art, Phase-shift interferometry, visual_art.visual_art_medium, engineering, symbols, Saturation (chemistry), Dissolution
Abstract

For the long-term assessment of CO 2 geological sequestration, the dissolution rate of feldspar was measured under various degrees of saturation based on observations of the time-course change of dissolved crystal surfaces on a nanoscale. We identified that the dependence of solution saturation state on anorthite dissolution rate follows to a L-shaped function, rather than to a linear function. Compared with a linear assumption, such a nonlinear form provides a much lower estimate of dissolution rate. This implies that the difference of rate formula can cause meaningful errors in the timescale evaluation of various geochemical processes. In this study, therefore, the effect of the function form of dissolution rate was also checked using the geochemical simulation code to analyze CO 2 geological sequestration.

Published
2009
Full Text
View/download PDF

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