Use of nitrogen and oxygen isotopes of dissolved nitrate to trace field-scale induced denitrification efficiency throughout an in-situ groundwater remediation strategy.

In the framework of the Life+ InSiTrate project, a pilot-plant was established to demonstrate the viability of inducing in-situ heterotrophic denitrification to remediate nitrate (NO)-polluted groundwater. Two injection wells supplied acetic acid by pulses to an alluvial aquifer for 22months. The monitoring was performed by regular sampling at three piezometers and two wells located downstream.