Hydrology and Earth System Sciences
Hydrology and Earth System Sciences
HESS
Articles | Volume 25, issue 11
Articles | Volume 25, issue 11
https://doi.org/10.5194/hess-25-5905-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/hess-25-5905-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 25, issue 11
Research article
 | Highlight paper
 | 
11 Nov 2021
Research article | Highlight paper |  | 11 Nov 2021

Feedback mechanisms between precipitation and dissolution reactions across randomly heterogeneous conductivity fields

Yaniv Edery, Martin Stolar, Giovanni Porta, and Alberto Guadagnini

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Cited articles

Ababou, R., McLaughlin, D., Gelhar, L. W., and Tompson, A. F. B.: Numerical simulation of three-dimensional saturated flow in randomly heterogeneous porous media, Transport Porous Med., 4, 549–565, https://doi.org/10.1007/BF00223627, 1989. 
Aquino, T. and Bolster, D.: Localized point mixing rate potential in heterogeneous velocity fields, Transport Porous Med., 119, 391–402, https://doi.org/10.1007/s11242-017-0887-z, 2017. 
Atchley, A. L., Navarre-Sitchler, A. K., and Maxwell, R. M.: The effects of physical and geochemical heterogeneities on hydro-geochemical transport and effective reaction rates, J. Contam. Hydrol., 165, 53–64, https://doi.org/10.1016/j.jconhyd.2014.07.008, 2014. 
Berkowitz, B., Cortis, A., Dentz, M., and Scher, H.: Modeling non-Fickian transport in geological formations as a continuous time random walk, Rev. Geophys., 44, RG2003, https://doi.org/10.1029/2005RG000178, 2006. 
Berkowitz, B., Dror, I., Hansen, S. K., and Scher, H.: Measurements and models of reactive transport in geological media, Rev. Geophys., 54, 930–986, https://doi.org/10.1002/2016RG000524, 2016. 
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The interplay between dissolution, precipitation and transport is widely encountered in porous media, from CO2 storage to cave formation in carbonate rocks. We show that dissolution occurs along preferential flow paths with high hydraulic conductivity, while precipitation occurs at locations close to yet separated from these flow paths, thus further funneling the flow and changing the probability density function of the transport, as measured on the altered conductivity field at various times.
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