Aquifer denitrification and in situ mesocosms: Modeling electron donor contributions and measuring rates

In situ denitrification rates were measured in a shallow unconfined glaciofluvial aquifer that had undergone large-scale nitrate contamination. Denitrification rates and isotopic enrichment factors, ε, were measured using three tracer tests in two aquifer in situ mesocosms (ISMs). Denitrification rates were also measured using a mass balance method using water samples from multiport samplers. First-order kinetic rates (k) best described the...