PRINT
        status false
TITLE Example 11.--Transport and ion exchange.
SOLUTION 0  CaCl2
        units            mmol/kgw
        temp             25.0
        pH               7.0     charge
        pe               12.5    O2(g)   -0.68
        Ca               0.6
        Cl               1.2
SOLUTION 1-40  Initial solution for column
        units            mmol/kgw
        temp             25.0
        pH               7.0     charge
        pe               12.5    O2(g)   -0.68
        Na               1.0
        K                0.2
        N(5)             1.2
#EQUILIBRIUM_PHASES        1
#        Fe(OH)3(a)       0.0
EXCHANGE 1-40
        equilibrate 1
        X                0.0011
#SURFACE    1
#        -equilibrate with solution 1-40
#        Hfo_wOH Fe(OH)3(a) equilibrium_phase  0.2  53400
ADVECTION
        -cells           40
        -shifts          120
#       -punch_cells     1-40
#       -punch_frequency 60
        -print_cells     40
        -print_frequency 20
SELECTED_OUTPUT
        -file            ex11adv.sel
        -reset           false
        -step
#       -distance
        -totals          Na Cl K Ca
USER_PUNCH
        -heading  Pore_vol
        10 PUNCH (STEP_NO + .5) / 40.
END
SOLUTION 1-40  Initial solution for column
        units            mmol/kgw
        temp             25.0
        pH               7.0     charge
        pe               12.5    O2(g)   -0.68
        Na               1.0
        K                0.2
        N(5)             1.2
#EQUILIBRIUM_PHASES       1
#       Fe(OH)3(a)       0.0
EXCHANGE 1-40
        equilibrate 1
        X                0.0011
#SURFACE  1
#       -equilibrate with solution 1-40
#       Hfo_wOH Fe(OH)3(a) equilibrium_phase  0.2  53400
TRANSPORT
        -cells           40
        -length          0.002
        -shifts          120
        -time_step       720.0
        -flow_direction  forward
        -boundary_cond   flux    flux
        -diffc           0.0e-9
        -dispersivity    0.002
        -correct_disp    true
#       -punch           1-40
#       -punch_frequency 60
        -print           40
        -print_frequency 20
SELECTED_OUTPUT
        -file            ex11trn.sel
        -reset           false
        -step
#       -distance
        -totals          Na Cl K Ca
END