phreeqc (version 3.8.7)

ex8: Example 8--Surface Complexation

Description

In all surface complexation models, sorption is a function of both chemical and electrostatic energy as described by the free energy relationship. Sorption is stronger when the Gibbs energy decreases. Thus, a counter-ion that carries a charge opposite to the surface charge tends to be sorbed electrostatically, while a co-ion that carries a charge with the same sign as the surface tends to be rejected. The example can be run using the phrRunString routine.

References

https://pubs.usgs.gov/tm/06/a43/pdf/tm6-A43.pdf

See Also

Other Examples: ex1, ex10, ex11, ex12, ex13a, ex14, ex15, ex16, ex17, ex18, ex19, ex2, ex20a, ex21, ex22, ex3, ex4, ex5, ex6, ex7, ex9

Examples

phrLoadDatabaseString(phreeqc.dat)
phrSetOutputStringsOn(TRUE)
# example 8 requires the selected_output file to be turned on
phrSetSelectedOutputFileOn(1, TRUE)
phrRunString(ex8)
phrGetOutputStrings()
# cleanup
unlink(c("ex8.sel", "Zn1e_7", "Zn1e_4"))