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
EXCHANGE 1-40
        equilibrate 1
        X                0.0011
ADVECTION
        -cells           40
        -shifts          120
        -punch_cells     40
        -punch_frequency 1
        -print_cells     40
        -print_frequency 20      
SELECTED_OUTPUT
        -file            ex11adv.sel
        -reset           false
        -step
        -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
EXCHANGE 1-40
        equilibrate 1
        X                0.0011
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           40
        -punch_frequency 1
        -print           40
        -print_frequency 20
SELECTED_OUTPUT
        -file            ex11trn.sel
        -reset           false
        -step
        -totals          Na Cl K Ca
END