#Contaminated soil ==> RIZO SOLUTION 3 # ==> stagnant cell units mol/L pH 7.5 Cl 1.00E-05 K 1.00E-05 Mg 7.50E-04 S(6) 7.50E-04 Cs 1.00E-6 use surface 3 #number of surface and exchange need to be the same as the cell here solution 3 ==> cell 3 use Exchange 3 EQUILIBRIUM_PHASES 3 Fix_H+ -7.5 HCl 10 END SOLUTION 0-1 # inlet solution 0 # define solution 1 since PHREEQC wants at least 1 cell in the colum for transport ==> mobile cell. units mol/L pH 7.5 Cl 1.00E-05 K 1.00E-05 Mg 7.50E-04 S(6) 7.50E-04Solution 100 #for evaporation ENDMIX 3 # simulate % water evaporation of solution 3 then replaced by solution 0 0 0.1100 -0.13 1 END TRANSPORT -cells 1 -lengths 0.01 # 1 cm sol -shifts 576 # number of time_steps total time is 24 days -time_step 3600 # each time_step (s) the MIX is performed #-flow_direction diffusion_only -boundary_conditions constant closed #-diffusion_coefficient 2.3E-08 -stagnant 1 -punch_cells 3 -punch_frequency 1 # sample every time step END

REACTION nH2O 1-5.5 # ~10 percent of the volume