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Article: New environmental quality study results from Department of Agriculture described.
- Article from:
- Ecology, Environment & Conservation
- Article date:
- August 7, 2009
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According to a study from the United States, "Subsurface drainage in agricultural watersheds exports a large quantity of nitrate-nitrogen (NO3-N) and concentrations frequently exceed 10 mg L-1. A laboratory column study was conducted to investigate the ability of a wood chip bioreactor to promote denitrification under mean water flow rates of 2.9, 6.6, 8.7 and 13.6 cm d(-1) which are representative of flows entering subsurface drainage tiles."
"Columns were packed with wood chips and inoculated with a small amount of oxidized till and incubated at 10 degrees C. Silicone sampling cells at the effluent ports were used for N2O sampling. (15)Nitrate was added to ...