ex19: Example 19-Modeling Cd+2 Sorption With Linear, Freundlich,...

In phreeqc: R Interface to Geochemical Modeling Software

Example 19–Modeling Cd+2 Sorption With Linear, Freundlich, and Langmuir Isotherms, and With a Deterministic Distribution of Sorption Sites for Organic Matter, Clay Minerals, and Iron Oxyhydroxides

Description

Sorption of heavy metals and organic pollutants on natural materials can be described by linear, Freundlich, or Langmuir isotherms. All three isotherms can be calculated by PHREEQC, as shown in this example for Cd+2 sorbing on a loamy soil (Christensen, 1984; Appelo and Postma, 2005). A more mechanistic approach, also illustrated here, is to model the distribution of Cd+2 over the sorbing components in the soil, in this case, in and on organic matter, clay minerals, and iron oxyhydroxides. The example can be run using the phrRunString routine.

Source

http://wwwbrr.cr.usgs.gov/projects/GWC_coupled/phreeqc

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, ex2, ex20a, ex21, ex22, ex3, ex4, ex5, ex6, ex7, ex8, ex9

Examples

phrLoadDatabaseString(phreeqc.dat)
phrSetOutputStringsOn(TRUE)
phrRunString(ex19)
phrGetOutputStrings()

phreeqc documentation built on Sept. 11, 2024, 8:33 p.m.