Why develop an aqueous geochemical numerical model?
o Predict drainage chemical composition
o Support decision-making related to control strategies
o Test hypotheses
o Perform complex calculations
Modelling approaches: Thermodynamic Equilibrium versus Kinetics
Gas diffusion
Redox reactions
One-dimensional transport modelling (PHREEQC) versus two and three-dimensional transport modelling (PHREEQC + FEFLOW)