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Mixing effects on apparent reaction rates and isotope fractionation during denitrification in a heterogeneous aquifer

Dates

Year
2010

Citation

Green, Christopher T, Böhlke, John Karl, Bekins, Barbara A, and Phillips, Steven P, 2010, Mixing effects on apparent reaction rates and isotope fractionation during denitrification in a heterogeneous aquifer: Water Resources Research, v. 46, iss. 8.

Summary

Gradients in contaminant concentrations and isotopic compositions commonly are used to derive reaction parameters for natural attenuation in aquifers. Differences between field-scale (apparent) estimated reaction rates and isotopic fractionations and local-scale (intrinsic) effects are poorly understood for complex natural systems. For a heterogeneous alluvial fan aquifer, numerical models and field observations were used to study the effects of physical heterogeneity on reaction parameter estimates. Field measurements included major ions, age tracers, stable isotopes, and dissolved gases. Parameters were estimated for the O2 reduction rate, denitrification rate, O2 threshold for denitrification, and stable N isotope fractionation [...]

Contacts

Communities

  • USGS National Research Program

Tags

Provenance

Added to ScienceBase on Fri Apr 19 11:15:14 MDT 2013 by processing file <b>Multiphase Flow, Transport, Reaction, and Biodegradation.xml</b> in item <a href="https://www.sciencebase.gov/catalog/item/51117dcfe4b03611765639d6">https://www.sciencebase.gov/catalog/item/51117dcfe4b03611765639d6</a>

Additional Information

Identifiers

Type Scheme Key
DOI http://sciencebase.gov/vocab/identifierScheme 10.1029/2009WR008903

Citation Extension

journalWater Resources Research
parts
typeVolume
value46
typeIssue
value8
citationTypeJournal Article

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