Results 21 to 30 of about 152,103 (369)

Hydrocarbon influence on denitrification in bioturbated Mediterranean coastal sediments [PDF]

open access: yes, 1997
An in situ experiment has been carried out inbioturbated Mediterranean coastal marine sediments (Gulfof Fos) in order to study the influence of hydrocarbons ondenitrification after 1, 4 and 6 months. In theabsence of hydrocarbons in the control sediments,
Bertrand, Jean-Claude   +5 more
core   +4 more sources

Dynamic modeling of nitrogen losses in river networks unravels the coupled effects of hydrological and biogeochemical processes [PDF]

open access: yes, 2009
The importance of lotic systems as sinks for nitrogen inputs is well recognized. A fraction of nitrogen in streamflow is removed to the atmosphere via denitrification with the remainder exported in streamflow as nitrogen loads.
Alexander, Richard B.   +9 more
core   +2 more sources

Anammox and partial denitrification coupling: a review

open access: yesRSC Advances, 2020
As a new wastewater biological nitrogen removal process, anammox and partial denitrification coupling not only plays a significant role in the nitrogen cycle, but also holds high engineering application value.
Qing-Guo You   +6 more
semanticscholar   +1 more source

Mustard catch crop enhances denitrification in shallow groundwater beneath a spring barley field [PDF]

open access: yes, 2013
The study was funded by Department of Agriculture and Food through the Research Stimulus Fund Programme (Grant RSF 06383) in collaboration with the Department of Civil, Structural & Environmental Engineering, Trinity College Dublin, Ireland.peer ...
Coxon, Catherine E.   +6 more
core   +1 more source

Algal Accumulation Decreases Sediment Nitrogen Removal by Uncoupling Nitrification-denitrification in Shallow Eutrophic Lakes.

open access: yesEnvironmental Science and Technology, 2020
In eutrophic lakes, the decay of settled algal biomass generates organic carbon and consumes oxygen, favoring sediment nitrogen loss via denitrification.
Lin Zhu   +5 more
semanticscholar   +1 more source

Denitrification in urban river sediment and the contribution to total nitrogen reduction

open access: yesEcological Indicators, 2021
Streams and rivers, especially in urban areas, are substantial sinks of bioavailable nitrogen owing to their hydrological connections with terrestrial systems and the intensity of inputs mediated by human activities.
Dong Yang   +9 more
doaj   +1 more source

Fate and impact of organics in an immersed membrane bioreactor applied to brine denitrification and ion exchange regeneration [PDF]

open access: yes, 2010
The application of membrane bioreactors (MBRs) to brine denitrification for ion exchange regeneration has been studied. The developed culture was capable of complete brine denitrification at 50 gNaCl.l−1.
Judd, Simon J.   +2 more
core   +1 more source

Experimental study on sodium persulfate denitrification based on hydrodynamic cavitation

open access: yesZhongguo Jianchuan Yanjiu, 2021
Objectives In order to improve the efficiency of sodium persulfate (Na2S2O8) wet oxidation denitrification and its utilization rate, wet oxidation denitrification experiments using hydrodynamic cavitation to enhance Na2S2O8 are carried out.
Bohao ZHANG   +5 more
doaj   +1 more source

Low probability of initiating nirS transcription explains observed gas kinetics and growth of bacteria switching from aerobic respiration to denitrification. [PDF]

open access: yesPLoS Computational Biology, 2014
In response to impending anoxic conditions, denitrifying bacteria sustain respiratory metabolism by producing enzymes for reducing nitrogen oxyanions/-oxides (NOx) to N2 (denitrification).
Junaid Hassan   +3 more
doaj   +1 more source

Influence of bioturbation on denitrification activity in Mediterranean coastal sediments:an in situ experimental approach [PDF]

open access: yes, 1998
An in situ experiment was conducted in the French Mediterranean littoral (Gulf of Fos) from July 1993 to January 1994 using controls without macrofauna or natural sediments.
Bonin, Patricia   +2 more
core   +1 more source

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