Implementing the Variability of Crystal Surface Reactivity in Reactive Transport Modeling

Abstract Current reactive transport model (RTM) uses control as the sole arbiter of differences in reactivity. For simulation crystal dissolution, a constant reaction rate is assumed for entire surface function chemical parameters. However, multiple dissolution experiments confirmed existence an intrinsic variability rates, spanning two to three orders magnitude. Modeling this variance process vital predicting minerals systems. Novel approaches solve problem are currently under discussion. Critical applications include reactions reservoir rocks, corrosion materials, or contaminated soils. The goal study provide algorithm multi-rate single crystals, discuss its software implementation, and present case studies illustrating difference between models. This improved approach applied set test cases order illustrate new standard approach. First, Kossel utilized critical modes faces, edges, corners. A second system exemplifies effect rock during calcite cement sandstone. results suggest that reported variations average rates can be explained by model, depending on geometric configurations surfaces.