Transport and Cation Exchange

Overview

This benchmark simulates the chemical composition of the effluent from a column containing a cation exchanger (Example 11 in the PHREEQC 3 documentation). The following setup is used for the simulation:

Model setup for the simulation of the column with a cation exchanger in OGS6.

Full details of the model setup and parameters are given in the PHREEQC3 example (consulted MAY-2021):

https://water.usgs.gov/water-resources/software/PHREEQC/documentation/phreeqc3-html/phreeqc3-73.htm#50593807_46434

The benchmark uses the ComponentTransport process in OGS-6 coupled with the IPhreeqc software (Parkhurst et al. 2013). The results show good agreement between codes. More details about the implementation of the ComponentTransport process in OGS-6 can be found in HC-Process.pdf.

Comparison between PHREEQC and OGS6 of simulated concentrations of solutes at time = 18,000 s reacting with an exchanger.

References

Parkhurst, D.L., Appelo, C.A.J., 2013. Description of Input and Examples for PHREEQC Version 3 - a Computer Program for Speciation, Batch-reaction, One-dimensional Transport, and Inverse Geochemical Calculations.


This article was written by Jaime Garibay-Rodriguez, Renchao Lu, Vanessa Montoya. If you are missing something or you find an error please let us know.
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