Comparison of Three Agricultural Residue-Based Filter Media for Use In a Denitrifying Bioreactor
2013-04-19
Loading...
View/Download File
Persistent link to this item
Statistics
View StatisticsJournal Title
Journal ISSN
Volume Title
Title
Comparison of Three Agricultural Residue-Based Filter Media for Use In a Denitrifying Bioreactor
Authors
Published Date
2013-04-19
Publisher
Type
Presentation
Abstract
Denitrifying bioreactors are one possible solution to the problem of nitrate-nitrogen outflow from agricultural subsurface drainage to surface waters. This study was conducted to determine the effectiveness of a corn cob and wood chip mixture, comprised of an equal amount of each by weight, as a denitrifying bioreactor bed medium in comparison to both corn cobs and wood chips alone. The nitrate-nitrogen removal rates of these three media were tested by packing each into 15 cm by 50 cm PVC cylinders and pumping a solution with a 50 mg/L concentration of nitrate-nitrogen through them over a period of five months at a rate equivalent to a hydraulic resistance time of 12 hours. The entire apparatus was kept at 2˚ C as to imitate weather conditions common to Midwestern states in early spring. The average nitrate-nitrogen removal rates for the three media were: corn cob > mixture > wood chips.
Description
Faculty adviser: Gary Feyereisen
Related to
Replaces
License
Series/Report Number
Funding information
This research was supported by the Undergraduate Research Opportunities Program (UROP). Additional funding provided by: the USDA-ARS Soil and Water Research Unit, the MN Agricultural Utilization Research Institute, and the MN Corn Growers Association.
Isbn identifier
Doi identifier
Previously Published Citation
Suggested citation
Slocum, Noah. (2013). Comparison of Three Agricultural Residue-Based Filter Media for Use In a Denitrifying Bioreactor. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/148052.
Content distributed via the University Digital Conservancy may be subject to additional license and use restrictions applied by the depositor. By using these files, users agree to the Terms of Use. Materials in the UDC may contain content that is disturbing and/or harmful. For more information, please see our statement on harmful content in digital repositories.