Articles | Volume 17, issue 10
Model description paper
31 May 2024
Model description paper |  | 31 May 2024

In silico calculation of soil pH by SCEPTER v1.0

Yoshiki Kanzaki, Isabella Chiaravalloti, Shuang Zhang, Noah J. Planavsky, and Christopher T. Reinhard

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Cited articles

Alva, A. K., Sumner, M. E., and Miller, W. P.: Relationship between ionic strength and electrical conductivity for soil solutions, Soil Sci., 152, 239–242,, 1991. 
Appelo, C. A. J.: Cation and proton exchange, pH variations, and carbonate reactions in a freshening aquifer, Water Resour. Res., 30, 2793–2805,, 1994. 
Aradóttir, E. S. P., Sonnenthal, E. L., and Jónsson, H.: Development and evaluation of a thermodynamic dataset for phases of interest in CO2 mineral sequestration in basaltic rocks, Chem. Geol., 304, 26–38,, 2012. 
Brantley, S. L., Kubicki, J. D., and White, A. F.: Kinetics of Water-Rock Interaction, Springer, ISBN 978-0-387-73562-7, 2008. 
Short summary
Soil pH is one of the most commonly measured agronomical and biogeochemical indices, mostly reflecting exchangeable acidity. Explicit simulation of both porewater and bulk soil pH is thus crucial to the accurate evaluation of alkalinity required to counteract soil acidification and the resulting capture of anthropogenic carbon dioxide through the enhanced weathering technique. This has been enabled by the updated reactive–transport SCEPTER code and newly developed framework to simulate soil pH.