If you are experiencing problems downloading PDF or HTML fulltext, our helpdesk recommend clearing your browser cache and trying again. If you need help in clearing your cache, please click here . Still need help? Email help@ingentaconnect.com

Stimulating Denitrification in Agricultural Headwater Streams Using Elemental Sulfur

$17.50 plus tax (Refund Policy)

Buy Article:


The extensive use of nitrogen fertilizers in agriculture has led to widespread eutrophication. We explored sulfur-based autotrophic denitrification in agricultural headwater streams as means to remove nitrogen near the source. A stream mesocosm, simulating a headwater drainage ditch, was amended with elemental sulfur chips. Nitrate removal efficiencies were as high as 99%, corresponding to effluent concentrations below 1 mg/L NO3 -N. However, nitrate removals decreased over time, concurrent with accumulation of biomass on the bed surface. A model was developed to describe the hydraulic and biological reactions taking place within the mesocosm. The model captured trends in bulk liquid nitrate concentrations but provided reasonable accuracy only when using a high diffusive exchange coefficient. This result suggests advective exchange with the bulk may be significant and biological activity is limited to the top few millimeters of the sulfur bed. Results suggest this approach is promising, although further research under more realistic conditions is needed.

Document Type: Research Article

DOI: http://dx.doi.org/10.2175/193864708788809400

Publication date: January 1, 2008

More about this publication?
  • Proceedings of the Water Environment Federation is an archive of papers published in the proceedings of the annual Water Environment Federation® Technical Exhibition and Conference (WEFTEC® ) and specialty conferences held since the year 2000. These proceedings are not peer reviewed.

    WEF Members: Sign in (right panel) with your IngentaConnect user name and password to receive complimentary access.
  • Subscribe to this Title
  • Membership Information
  • About WEF Proceedings
  • WEFTEC Conference Information
  • ingentaconnect is not responsible for the content or availability of external websites



Share Content

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
Cookie Policy
ingentaconnect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more