Abstract
Performance of a novel in-situ denitrification process was studied under two different electrode configurations in laboratory-scale sandy aquifers. The electrode configurations used in this study were perpendicular and parallel configurations where the directions of electric currents are perpendicular and parallel to the groundwater flow direction, respectively. Experimental results showed that the perpendicular configuration was better than the parallel configuration because of smaller effect of electric field produced in aquifers. A two-dimensional mathematical model for the perpendicular configuration was developed taking into considerations of migration, advection, diffusion and denitrification rates. The calculation results from the model were fairly in good agreement with experimental data.
