Numerical simulation of reactive solute transport in saturated column of different soils

Physical chemistry reaction in saline soils has some important effect on saline solute transport,and ion exchanges are the common chemical reactions observed in soil.Indoor leaching experiment were conducted to explore effects of the two reaction solute on single component/multi-component saline solute transport.The traditional convection-dispersion equation(CDE) regardless of chemical reactions was simulated by CXTFIT,and the reaction solutes coupled with adsorption,and ion exchange were simulated by PHREEQC,a hydrologic geochemical software.Results show that soil texture has important effect on single component saline solute transport,the effects between components are important in saline solute transport,and the effect coupled physical and chemical reaction is more precise in simulation.