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Latest Anammox Stories

Rhode Island Nitrogen Cycle Differs In Bay And Sound
2014-04-29 17:17:11

Brown University A new study reports that anammox, a key process in the nitrogen cycle, is barely present in Narragansett Bay even though it’s a major factor just a little farther out into Rhode Island Sound. Scientists traced that to differences between bay and sound sediments, but that raises new questions about what’s going on in the Bay to account for those. Rhode Island’s geography is famously small, but new measurements of the nitrogen cycle in its waterways suggest that...

Study May Resolve Controversy Over Nitrogen’s Ocean Exit Strategies
2014-04-14 12:19:53

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 Washington. The debate centers on how nitrogen — one of the most important food sources for ocean life and a controller of atmospheric carbon dioxide — becomes converted to a form that can exit the ocean and return to the atmosphere where it is reused...

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...

2013-08-08 14:02:31

1 species of bacteria rides the other down through sediment like an elevator, then closes the loop on the ocean's nitrogen cycle In a discovery that further demonstrates just how unexpected and unusual nature can be, scientists have found two strains of bacteria whose symbiotic relationship is unlike anything seen before. Long, thin, hairlike Thioploca (meaning "sulfur braids" in Spanish) trichomes form chains down into marine sediment, which tiny anammox cells ride down like an...

Homes Of Giant Bacteria Invaded By Strangers
2013-08-08 09:05:48

University of Southern Denmark Life is not a walk in the park for the world's largest bacteria, that live as soft, noodle-like, white strings on the bottom of the ocean depths. Without being able to fend for themselves, they get invaded by parasitic microorganisms that steal the nutrition, that they have painstakingly retrieved. This newly discovered bizarre deep ocean relationship may ultimately impact ocean productivity, report researchers from University of Southern Denmark now in the...

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...

Cat Urine To Power Space Travel?
2011-10-04 08:36:19

Will our next generation of space travel be powered by cat urine? Researchers from Radboud University Nijmegen in the Netherlands released a study which details the work of a particular bacterium that turns the smelly contents of your cat box (or any other type of urine) into space fuel, AFP is reporting. The results of the scientists´ work show that the bacterium anammox, first identified in the 1990´s, thrives in the absence of oxygen and transforms ammonium, the...

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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...

2008-07-02 06:00:47

By Dosta, J Gali, A; El-Hadj, T Benabdallah; Mata-Alvarez, J ABSTRACT: An efficient biological treatment to treat reject water from anaerobic digestion of wastewater sludge is the SHARON denitrification process, which takes place in a chemostat reactor, where aerobic/anoxic periods are alternated under specific hydraulic retention time (HRT) and temperature conditions that favor ammonium oxidizers growth and ensure the total washout of nitrite oxidizers, achieving the biological nitrogen...


Word of the Day
tesla
  • The unit of magnetic flux density in the International System of Units, equal to the magnitude of the magnetic field vector necessary to produce a force of one newton on a charge of one coulomb moving perpendicular to the direction of the magnetic field vector with a velocity of one meter per second. It is equivalent to one weber per square meter.
This word is named for Nikola Tesla, the inventor, engineer, and futurist.