##  Time-stamp: "Last modified 2024-04-12 10:59:59 delucia"
## KNOBS
##  -logfile            false
##  -iterations         10000
##  -convergence_tolerance  1E-12
##  -step_size          2
##  -pe_step_size       2

SOLUTION 1                     ## Porewater composition Opalinus Clay, WITHOUT radionuclides, AFTER EQUI_PHASES
  pe           -2.627          ## Eh = -227 mV, Value from Bossart & Thury (2008)-> PC borehole measurement 2003, Eh still decreasing  
  density      1.01583         ## kg/dm³ = g/cm³
  temp         13              ## mean temperature Mont Terri, Bossart & Thury (2008), calculations performed for 25°C
  units        mol/kgw
  ## Mean composition   
  pH           7.064                    
  Na           2.763e-01
  Cl           3.228e-01  charge 
  S(6)         1.653e-02  as SO4
  Ca           2.173e-02 
  Mg           1.740e-02
  K            1.902e-03 
  Sr           4.520e-04 
  Fe           1.435e-04                 
  U            2.247e-09                

SURFACE 1 Opalinus Clay, clay minerals 
  ## calculated with rho_b=2.2903 kg/dm³, poro=0.1662
  ## 1 dm³ = 13.565641 kg_sed/kg_pw
  -equil 1                ## equilibrate with solution 1 
  -sites_units density    ## set unit for binding site density to sites/nm2
  -donnan 4.9e-10         ## calculated after Wigger & Van Loon (2018) for ionic strength after equilibration with minerales for pCO2=2.2 log10 bar    

  # surface  density SSA (m2/g)  mass (g/kgw) 
  Kln_aOH  1.155   11.         3798.4     ## Kaolinite 28 wt% (aluminol and silanol sites) 
  Kln_siOH 1.155               
  Ill_sOH  0.05    100.        4205.35    ## Illite 31 wt% (weak und strong binding sites) 
  Ill_wOH  2.26                           ## 2 % strong binding sites  
  Mll_sOH  0.05    100.        813.94     ## Montmorillonite = smektite = 6 wt% (weak und strong binding sites)            
  Mll_wOH  2.26                           ## 2 % strong binding sites

EXCHANGE 1 Exchanger, only illite+montmorillonite 
  ## Illite = 0.225 eq/kg_rock, Montmorillonit = 0.87 eq/kg_rock 
 -equil 1         ## equilibrate with solution 1
  Z     0.9462    ## = Illite
  Y     0.70813   ## = Montmorillonite
END

SOLUTION 2                     ##  Porewater composition Opalinus Clay, WITHOUT radionuclides, AFTER EQUI_PHASES
  pe           -2.627          ## Eh = -227 mV, Value from Bossart & Thury (2008)-> PC borehole measurement 2003, Eh still decreasing  
  density      1.01583         ## kg/dm³ = g/cm³
  temp         13              ## mean temperature Mont Terri, Bossart & Thury (2008), calculations performed for 25°C
  units        mol/kgw
  ## Mean composition   
  pH           7.064                    
  Na           2.763e-01
  Cl           3.228e-01  charge 
  S(6)         1.653e-02  as SO4
  Ca           2.173e-02 
  Mg           1.740e-02
  K            1.902e-03 
  Sr           4.520e-04 
  Fe           1.435e-04                 
  U            2.247e-09                

SURFACE 2 Opalinus Clay, clay minerals 
  -equil 2                ## equilibrate with solution 2 
  -sites_units density    ## set unit for binding site density to
			  ## sites/nm2
  -donnan 4.9e-10         ## calculated after Wigger & Van Loon (2018)
			  ## for ionic strength after equilibration
			  ## with minerales for pCO2=2.2 log10 bar

  ## surface  density SSA (m2/g)  mass (g/kgw) 
  Kln_aOH  1.155   11.         2798.4     ## Kaolinite 28 wt% (aluminol and silanol sites) 
  Kln_siOH 1.155               
  Ill_sOH  0.05    100.        1205.35    ## Illite 31 wt% (weak und strong binding sites) 
  Ill_wOH  2.26                           ## 2 % strong binding sites  
  Mll_sOH  0.05    100.        113.94     ## Montmorillonite = smektite = 6 wt% (weak und strong binding sites)            
  Mll_wOH  2.26                           ## 2 % strong binding sites

EXCHANGE 2 Exchanger, only illite+montmorillonite 
  ## Illite = 0.225 eq/kg_rock, Montmorillonit = 0.87 eq/kg_rock 
 -equil 2         ## equilibrate with solution 1
  Z     0.5       ## = Illite
  Y     0.2       ## = Montmorillonite
END

SOLUTION 3
  pe           -2.627          ## Eh = -227 mV, Value from Bossart & Thury (2008)-> PC borehole measurement 2003, Eh still decreasing  
  density      1.01583         ## kg/dm³ = g/cm³
  temp         13              ## mean temperature Mont Terri, Bossart & Thury (2008), calculations performed for 25°C
  units        mol/kgw
  ## Mean composition   
  pH           7.064                    
  Na           3.763e-01
  Cl           4.228e-01  charge 
  S(6)         1.653e-02  as SO4
  Ca           2.173e-02 
  Mg           1.740e-02
  K            1.902e-03 
  Sr           4.520e-04 
  Fe           1.435e-04                 
  U            1e-6            
  C            1.991e-03 
END

RUN_CELLS
END