Cu-S-C Predominance

This example is from Phreeplot manual (Kinniburgh, D., & Cooper, D. (2011). PhreePlot: Creating graphical output with PHREEQC).

Studies

This project contains 2 Studies.

• PhreeqcStudy: “study_02 - Cu-S-C System”

Db used: “wateq4f_dat” database

PHASES

Fix_H+

   H+ = H+

   log_k 0.0

SOLUTION 1

 Temp 20

 pH 1.8 # set just below lowest pH

 units mol/kgw

 Cu 1e-1 # total concns

 S(6) 1e-1

 Na 1e-1 # background electrolyte

 Cl 1.032e-1

END

USE solution 1 # loop on last simulation by default

EQUILIBRIUM_PHASES 1

 Fix_H+ @{$-1*ph_param$}@ NaOH 

 -force_equality true

 O2(g) @{$o2_pressure$}@ 0.1

 CO2(g) -3.5 1.0 # N.B. no minerals

END

/n

• GridStudy: “Grid Study”

Plots

This project contains 3 Plots.

• Plot 1: “Predominance Diagram (ex2)”

Predominance species distribution for Cu-S-C-H2O system

• Plot 2: “Cu Species Slice”

Cu species concentration at slice pO2 = -63

• Plot 3: “Cl Species Slice”

Cl species concentration at slice pO2 = -63