Results 41 to 50 of about 28,805 (221)

N2O production in the eastern South Atlantic: analysis of N2O stable isotopic and concentration data [PDF]

, 2014
The stable isotopic composition of dissolved nitrous oxide (N2O) is a tracer for the production, transport, and consumption of this greenhouse gas in the ocean.
Nevison, Cynthia, Frame, Caitlin, Karen L. Casciotti, Casciotti, Karen, Deal, Eric, Caitlin H. Frame, Eric Deal, Cynthia D. Nevison   +7 more
core   +1 more source

Evaluating the potential of different carbon sources to promote denitrification [PDF]

, 2020
Organic carbon (C) plays an essential role in the denitrification process as it supplies energy for N2O, N2 and CO2 producing reactions. The objectives of this study were to: (i) rank the reactivity of different C compounds found in manures based on ...
Dlamini, J., Cardenas, L. M., Hawkins, J., Chadwick, D. R., Cardenas, L., Hawkins, J.M.B., Ma, Y., Dlamini, Jerry Celumusa, Martinez, J., Martinez, José, Hawkins, J. M. B., Chadwick, D., Dlamini, J. C., Scholefield, D.   +13 more
core   +1 more source

Testing our understanding of Arctic denitrification using MIPAS-E satellite measurements in winter 2002/2003 [PDF]

Atmospheric Chemistry and Physics, 2006
Observations of gas-phase HNO3 and N2O in the polar stratosphere from the Michelson Interferometer for Passive Atmospheric Sounding aboard the ENVISAT satellite (MIPAS-E) were made during the cold Arctic winter of 2002/2003.
S. Davies, G. W. Mann, K. S. Carslaw, M. P. Chipperfield, J. J. Remedios, G. Allen, A. M. Waterfall, R. Spang, G. C. Toon   +8 more
doaj  

Denitrification pathways and rates in the sandy sediments of the Georgia continental shelf, USA

Geochemical Transactions, 2005
Denitrification in continental shelf sediments has been estimated to be a significant sink of oceanic fixed nitrogen (N). The significance and mechanisms of denitrification in organic-poor sands, which comprise 70% of continental shelf sediments, are ...
Ingall Ellery, Vance-Harris Cynthia
doaj   +1 more source

Thermal Calculations for Co‐Firing of Hydrogen/Ammonia and Coal in 660‐MW Coal‐Fired Boilers

Asia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT To achieve a clean energy transition under the dual carbon goals, blending hydrogen/ammonia into pulverized coal boilers represents a key technological pathway. Different hydrogen/ammonia co‐firing ratios (5%–50%) are investigated for their impact on the thermodynamic characteristics of 660‐MW supercritical boiler at 100% and 20% boiler ...
Yaodong Da, Nana Hou, Weipeng Wang, Yongqiang Chang, Xin Liu, Feng Pan, Defu Che, Lei Deng   +7 more
wiley   +1 more source

Nitrogen removal in marine environments: recent findings and future research challenges [PDF]

, 2005
Respiratory reduction of nitrate (denitrification) is recognized as the most important process converting biologically available (fixed) nitrogen to N2. In current N cycle models, a major proportion of global marine denitrification (50–70%) is assumed to
Bo Thamdrup, Thamdrup, Bo, Donald E. Canfield, Gilbert, Franck, Dalsgaard, T, Thamdrup, B, Canfield, Donald E., Engström, Pia,, Dalsgaard, Tage, Kristina Sundbäck, Robert C. Aller, Hulth, Stefan, Sundb\ue4ck, Kristina, Engström, Pia, Tage Dalsgaard, Aller, R. C, Canfield, D. E, Franck Gilbert, Engstr\uf6m, Pia, Aller, Robert Curwood, Sundbäck, Kristina, Gilbert, F., Hulth, Stefan,, Stefan Hulth, Pia Engström, Sundbäck, Kristina,   +25 more
core   +1 more source

Performance and Microbial Community analysis on denitrification of electronic wastewater using various External Carbon Source [PDF]

대한환경공학회지
Objectives In the biological denitrification process of electronic wastewater, the denitrification performance of various types of external carbon sources and the changes in the bacterial community before and after denitrification were evaluated through ...
Hyunjun Song, Taegeun Kim, HyeonJung Cha, SungYeop Jung   +3 more
doaj   +1 more source

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

Evaluation of Greenhouse Gas Emissions and Sludge Characteristics in Typical AAO Process WWTPs in Taihu Lake Basin, China

Asia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT This study investigated sludge characteristics and greenhouse gas (GHG) emission from 16 anaerobic‐anoxic‐oxic (AAO) process wastewater treatment plants (WWTPs), 11 municipal and 5 industrial WWTPs, located in the Taihu Lake Basin, China. Influent/effluent water quality, sludge properties, operational parameters, GHG emission patterns, and ...
He Li, Zhirun Liu, Rajendra Prasad Singh
wiley   +1 more source

A method for estimating the extent of denitrification of Arctic polar vortex air from tracer-tracer scatter plots

, 2002
A method for estimating the extent of denitrification of Arctic polar vortex air is proposed. Previous estimates of denitrification using tracer-tracer scatter plots have not allowed for mixing-induced changes in tracer-tracer relationships in a ...
Esler, JG, J. G. Esler, Waugh, DW, D. W. Waugh   +3 more
core   +1 more source