# Retraction of dissolution front in natural porous media

Source: [Retraction of dissolution front in natural porous media](<https://www.sota2.com/research/paper/68fa37a41e209131ce8b3f7d>)

Collection index: [llms.txt](<https://www.sota2.com/research/llms.txt>)

Data updated: 2025-10-24T22:31:08.632Z

Authors: Yi Yang, Stefan Bruns, Melania Rogowska, Sepideh S. Hakim, J\\"org U. Hammel, Susan L. S. Stipp, Henning O. S{\\o}rensen (1) \_\_INSTITUTION\_7\_\_ Nano-Science Center, Department of Chemistry, University of Copenhagen, (2) Helmholtz-Zentrum Geesthacht, Germany)

Published: 2017-03-27T13:48:36.000Z

## Abstract

The dissolution of porous materials in a flow field shapes the morphologies of many geologic landscapes. Identifying the dissolution front, the interface between the reactive and the unreactive regions in a dissolving medium, is a prerequisite for studying dissolution kinetics. Despite its fundamental importance, the dynamics of a dissolution front in an evolving natural microstructure has never been reported. Here we show an unexpected spontaneous migration of the dissolution front against the pressure gradient of a flow field. This retraction stems from the infiltration instability induced surface generation, which can lead to a reactive surface dramatically greater than the ex situ geometric surface. The results are supported by a very good agreement between observations made with real time X-ray imaging and simulations based on static images of a rock determined by nanoCT. They both show that the in situ specific surface area of natural porous media is dependent on the flow field and reflects a balancing between surface generation and destruction. The reported dynamics challenge many long-held understanding of water-rock interactions and shed light on reconciling the discrepancies between field and laboratory measurements of reaction kinetics.

## Recorded benchmark results

A research result applies to its stated dataset, split, metric and evaluation configuration. Compare like-for-like settings, preserve the metric's unit and direction, and distinguish paper-reported results from independent reproduction. The best result recorded here is not a claim of exhaustive, current global coverage.

## Original sources and implementation

[Original paper](<https://arxiv.org/abs/1704.01065>)

[PDF](<https://arxiv.org/pdf/1704.01065.pdf>)