Quantcast
Last updated on April 19, 2014 at 18:42 EDT
Study Could Resolve Controversy Over Nitrogens Ocean Exit

Study Could Resolve Controversy Over Nitrogen’s Ocean Exit Strategies

By Catherine Zandonella, Princeton University A decades-long debate over how nitrogen is removed from the ocean may now be settled by new findings from researchers at Princeton University and their collaborators at the University of...

Latest Denitrification Stories

2013-11-19 12:12:15

Farmers may be able to help reduce emissions of the greenhouse gas nitrous oxide (N2O) by incorporating copper into crop fertilization processes – according to new research from the University of East Anglia. Global agricultural emissions of the gas have increased by 20 per cent in the last century as a result of widespread use of nitrogen-based synthetic fertilizers. But new research into the processes of nutrient cycling published today reveals how farmers could mitigate the effects...

The Oceans Nitrogen Puzzle
2013-11-05 07:55:09

Max-Planck-Gesellschaft Nitrogen isotope effects by anammox deciphered A team of scientists from the Max Planck Institute for Marine Microbiology, the University of Basel, and Radboud University Nijmegen has now revealed the details of an important microbial process regulating the global nitrogen budget in the oceans. They present their results in the Proceedings of the National Academy of Sciences of the United States of America. Every organism needs nitrogen to survive and...

2011-10-05 17:57:33

Max Planck scientists unravel key pathway in the nitrogen cycle The anaerobic oxidation of ammonia (anammox) is an important pathway in the nitrogen cycle that was only discovered in the 1980s. Currently, scientists estimate that about 50 percent of the nitrogen in the atmosphere is forged by this process. A group of specialized bacteria perform the anammox reaction, but so far scientists have been in the dark about how these bacteria could convert ammonia to nitrogen in the complete...

e00f0a18c03278ddd3298a00d5376db81
2011-03-05 11:30:52

Study examines the disposal of animal waste in large-scale swine productionNorth and South Carolina have seen a steady increase in swine production over the last 15 years. In North Carolina alone, swine production generates approximately a quarter of the state's gross farm receipts. The presence of so many large-scale pig farms leads to the problem of proper animal waste disposal.The most common practice in the Carolinas is storing animal waste in anaerobic lagoons. They are primarily used to...

2010-11-01 22:20:09

Excess nitrogen from agricultural and urban lands is contaminating groundwater, streams, lakes and estuaries, where it causes harmful algal blooms and contributes to fish kills. Cost-effective approaches to removing this nitrogen from croplands and urban stormwater runoff before it reaches sensitive water bodies have been elusive. But simple and inexpensive technologies are on the horizon. A recent scientific workshop on denitrification brought together ecologists, engineers and policy...

2010-07-07 12:58:00

BOURNE, Mass., July 7 /PRNewswire/ -- Environmental Operating Solutions, Inc. (EOSi) announced today that it had completed a $3.5 million venture capital financing to support the company's growth. Existing investor Stuart Mill Venture Partners was joined by new institutional investors MidPoint Food & Ag Fund and Meidlinger Partners. Proceeds from the investment will be used to support growth of the company's MicroC(TM) line of non-hazardous, agriculturally-derived carbon sources for...

2010-03-22 13:39:00

BOURNE, Mass., March 22 /PRNewswire/ -- Environmental Operating Solutions, Inc. (EOS) announced today that it has opened four new production facilities. The new facilities are located in Denver, Colorado, Newark, New Jersey, Orlando, Florida and Winston-Salem, North Carolina. The new facilities complement existing facilities in Boston, Massachusetts, Portland, Oregon, Greenville, South Carolina and two facilities in Baltimore, Maryland. EOS also announced plans to develop additional...

d4951def6ea274fd726987e080629399
2009-11-02 13:40:00

Nitrogen fixation in the Atlantic Scientists including researchers from the National Oceanography Centre, Southampton and the University of Essex have discovered that interactions between iron supply, transported through the atmosphere from deserts, and large-scale oceanic circulation control the availability of a crucial nutrient, nitrogen, in the Atlantic. Their findings have potentially important implications for understanding global climate, both past and future. Nitrogen is an essential...

53ead0d6fcb99b9df5dba09fe47e615f
2009-09-02 15:13:11

After more than a decade of inquiry, a Princeton-led team of scientists has turned the tables on a long-standing controversy to re-establish an old truth about nitrogen mixing in the oceans. For decades, scientists thought they had a handle on the workings of an intricate natural mechanism known as the nitrogen cycle, essential to maintaining life on Earth. This process, one of nature's most elegant sleights-of-hand, shuttles nitrogen from the soils to the oceans to the atmosphere and back. A...

2008-07-02 06:00:47

By Pedros, P B Onnis-Hayden, A; Tyler, Charles ABSTRACT: The purpose of this study was to investigate the nitrification and nitrogen removal from centrate produced in the dewatering process of anaerobically digested sludge, using a single- unit, single-zone submerged attached-growth bioreactor. The nitrogen loading varied from 0.54 to 1.51 kg-N/m^sup 3^ . d. Stable ammonia oxidation (nitritification) to nitrite was demonstrated. A nitritification efficiency of 98% was achieved, while the...