Abstract
The use of geoelectrical monitoring of groundwater quality and contaminationis a growing and promising topic. Nowadays, geoelectrical methods aremostly used as qualitative detection tools. This study aims to better usegeoelectrical signals as a complementary tool for the quantitative characterizationof chemical species transport and reaction in the porous matrixby developing a coupled mechanistic model. We examine the dissolutionof calcite as an effective proof-of-concept. Our investigation focuses on theimpact of the reactive zone’s position, extent, and intensity of geoelectricalsignals under various inlet conditions. We conducted five experiments onflow-through columns equipped with geoelectrical monitoring. This studypresents a unique dataset that is analyzed using a workflow that combinesreactive transport numerical simulation with numerical modeling of geoelectricaland structural properties. The comparison of the predicted signalswith the experimental data clearly shows the characterization of the spatial and temporal distributions of the reaction rates.