Next Article in Journal
Hydrological Modeling of Highly Glacierized Basins (Andes, Alps, and Central Asia)
Previous Article in Journal
Contemporary and Future Characteristics of Precipitation Indices in the Kentucky River Basin
Article Menu
Issue 2 (February) cover image

Export Article

Open AccessArticle
Water 2017, 9(2), 112; doi:10.3390/w9020112

Performance of Denitrifying Bioreactors at Reducing Agricultural Nitrogen Pollution in a Humid Subtropical Coastal Plain Climate

1
Midshore Riverkeeper Conservancy, Easton, MD 21601, USA
2
Department of Crop Sciences, University of Illinois, Urbana, IL 61801, USA
*
Author to whom correspondence should be addressed.
Received: 21 December 2016 / Accepted: 6 February 2017 / Published: 10 February 2017
View Full-Text   |   Download PDF [15782 KB, uploaded 13 February 2017]   |  

Abstract

Denitrifying bioreactors are an agricultural best management practice developed in the midwestern United States to treat agricultural drainage water enriched with nitrate‐nitrogen (NO3N). The practice is spreading rapidly to agricultural regions with poor water quality due to nutrient enrichment. This makes it imperative to track bioreactor NO3‐N reduction efficiency as this practice gets deployed to new regions. This study evaluated the application and performance of denitrifying bioreactors in the humid subtropical coastal plain environment of the Chesapeake Bay catchment to provide data about regionally specific NO3‐N reduction efficiencies. NO3‐N samples were taken before and after treatment at three denitrifying bioreactors, in addition to other nutrients (orthophosphate‐phosphorus, PO4‐P; ammonium‐nitrogen, NH4‐N; total nitrogen, TN; total phosphorus, TP) and water quality parameters (dissolved oxygen, DO; oxidation reduction potential, ORP; pH; specific conductance, SPC). Total removal ranged drastically between bioreactors from 10 to 133 kg N, with removal efficiencies of 9.0% to 62% and N removal rates of 0.21 to 5.36 g N removed per m3 of bioreactor per day. As the first bioreactor study in the humid subtropical coastal plain, this data provides positive proof of concept that denitrifying bioreactor is another tool for reducing N loads in agricultural tile drainage in this region. View Full-Text
Keywords: denitrifying bioreactor; nitrogen; nitrate; agriculture; tile drainage; Chesapeake Bay;  humid suptropical; best management practice; dair denitrifying bioreactor; nitrogen; nitrate; agriculture; tile drainage; Chesapeake Bay;  humid suptropical; best management practice; dair
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Rosen, T.; Christianson, L. Performance of Denitrifying Bioreactors at Reducing Agricultural Nitrogen Pollution in a Humid Subtropical Coastal Plain Climate. Water 2017, 9, 112.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Water EISSN 2073-4441 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top