Results 51 to 60 of about 97,689 (295)

Warming can boost denitrification disproportionately due to altered oxygen dynamics. [PDF]

PLoS ONE, 2011
BACKGROUND: Global warming and the alteration of the global nitrogen cycle are major anthropogenic threats to the environment. Denitrification, the biological conversion of nitrate to gaseous nitrogen, removes a substantial fraction of the nitrogen from ...
Annelies J Veraart, Jeroen J M de Klein, Marten Scheffer   +2 more
doaj   +1 more source

Confirmation of co-denitrification in grazed grassland [PDF]

, 2015
peer-reviewedPasture-based livestock systems are often associated with losses of reactive forms of nitrogen (N) to the environment. Research has focused on losses to air and water due to the health, economic and environmental impacts of reactive N.
Cameron, K.C., Clough, Timothy J., Di, H.J., Grant, Jim, Lanigan, Gary, Laughlin, Ronald J., Moir, James L., Richards, Karl G., Selbie, Diana R., Somers, Cathal, Watson, C. J.   +10 more
core   +1 more source

Ultrasound–Calcination Synergistic Control of (Ce, La)PO4 Catalyst Structure for Enhanced Low‐Temperature NH3‐SCR Performance

Asia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT In this study, (Ce, La)PO4 catalysts were synthesized via an ultrasound‐assisted method. The effects of ultrasound duration and calcination temperature on the low‐temperature NH3‐SCR performance were systematically investigated. The results indicated that the (Ce, La)PO4 catalyst prepared with an ultrasound treatment time of 20 min and a ...
Na Li, Kai Yan, Shuning Tan, Ruifang Wang, Zhiyu Zhang   +4 more
wiley   +1 more source

Denitrification in carbonate aquifers: a literature review

GEUS Bulletin
Denitrification is the most important process for nitrate removal in groundwater. Although carbonate aquifers are important for drinking water supply, the denitrification process in these systems is less understood than for unconsolidated sedimentary ...
Denitza D. Voutchkova, Birgitte Hansen, Lærke Thorling, Hyojin Kim, Jens Aamand, Rasmus Jakobsen   +5 more
doaj   +1 more source

Rates and Pathways of N2 Production in a Persistently Anoxic Fjord: Saanich Inlet, British Columbia

Frontiers in Marine Science, 2019
Marine oxygen minimum zones (OMZs) support 30–50% of global fixed-nitrogen (N) loss but comprise only 7% of total ocean volume. This N-loss is driven by canonical denitrification and anaerobic ammonium oxidation (anammox), and the distribution and ...
Céline C. Michiels, Céline C. Michiels, Julia A. Huggins, Julia A. Huggins, Karina E. Giesbrecht, Jenifer S. Spence, Jenifer S. Spence, Rachel L. Simister, Rachel L. Simister, Diana E. Varela, Steven J. Hallam, Steven J. Hallam, Steven J. Hallam, Steven J. Hallam, Steven J. Hallam, Sean A. Crowe, Sean A. Crowe, Sean A. Crowe   +17 more
doaj   +1 more source

Subsurface tropical Pacific nitrogen isotopic composition of nitrate: Biogeochemical signals and their transport [PDF]

, 2011
We report measurements of the nitrogen isotopic composition of nitrate (the δ15N of NO3−) across the equatorial Pacific, for zonal transects from 165°E to 95°W and meridional transects across 95° and 110°W.
Charles, Christopher D., Haug, Gerald H., Kaiser, Jan, Rafter, Patrick A., Sigman, Daniel M.   +4 more
core   +1 more source

The Effect of Sintering Flue Gas Composition on NO Reduction in Coke

Asia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT The strategy of substituting combustion air with sintering flue gas in circulating fluidized bed (CFB) systems provides a low‐cost and highly efficient approach for the purification of sintering off‐gas. In this work, coke was employed as the reducing agent, and a high‐temperature vertical tube furnace was used to simulate the dense‐phase ...
Canbin Huang, Tuo Zhou, Hao Xie, Jinjiang Zhao, Man Zhang, Hairui Yang   +5 more
wiley   +1 more source

Research progress of autotrophic denitrification technology of sulfur, iron and sulfur-iron based electron donors

Gongye shui chuli
Autotrophic denitrification technology has the advantages of no additional carbon source, low sludge yield and low cost. It is one of the promising technologies for deep denitrification of low C/N wastewater under the dual-carbon background.
WANG Jing, WANG Ning, HAN Yanhe, LI Zaixing, MA Xuejiao, WANG Nannan, JIANG Wenbin   +6 more
doaj   +1 more source

Characterisation of denitrification in the subsurface environment of the Manawatū catchment, New Zealand : a thesis presented in partial fulfilment of the requirements for the degree of Doctor of Philosophy in Earth Science at Massey University, Palmerston North, New Zealand [PDF]

, 2018
Figures 2.1 & 2.2 have been removed for copyright reasons but may be accessed via their source listed in the References (Rivett et al., 2008, Fig. 2 & Saggar et al., 2013, Fig.
Rivas, Aldrin Alameda
core  

A model of nitrous oxide evolution from soil driven by rainfall events: 1. Model structure and sensitivity [PDF]

, 1992
This paper describes a rain-event driven, process-oriented simulation model, DNDC, for the evolution of nitrous oxide (N2O), carbon dioxide (CO2), and dinitrogen (N2) from agricultural soils.
Frolking, Steve, Frolking, Tod A, Li, Changsheng   +2 more
core   +2 more sources