Uncertainty propagation in pore water chemical composition calculation using surrogate models.

ABSTRACT: Performance assessment in deep geological nuclear waste repository systems necessitates an extended knowledge of the pore water chemical conditions prevailing in host-rock formations. In the last two decades, important progress has been made in the experimental characterization and thermodynamic modeling of pore water speciation, but the influence of experimental artifacts and uncertainties of thermodynamic input parameters are seldom evaluated. In this respect, we conducted an uncertainty propagation study in a reference geochemical model describing the pore water chemistry of the Callovian-Oxfordian clay formation. Nineteen model input parameters were perturbed, including those associated to experimental characterization (leached anions, exchanged cations, cation exchange selectivity coe

SUBMITTER: Sochala P 

PROVIDER: S-EPMC9445106 | biostudies-literature | 2022 Sep

REPOSITORIES: biostudies-literature