Results 51 to 60 of about 54,041 (296)

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

Denitrification in Seepage-Irrigated Vegetable Fields in South Florida

EDIS, 2019
The objectives of this article are to: • describe denitrification and the factors known to affect its rate, • present current methods available for the measurement of denitrification rate, • summarize available estimates of denitrification rate ...
Eric H. Simonne, Guodong Liu, Benjamin Morgant   +2 more
doaj   +1 more source

Evaluation and Optimization of COD Removal Performance for a Domestic Wastewater Treatment Plant by Response Surface Methodology: The Case of Van Muradiye

Asia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT In this study, the performance of the Van Muradiye Domestic Wastewater Treatment Plant was evaluated with Response Surface Methodology (RSM). The effects of pH, conductivity, dissolved oxygen (DO), and suspended solids (SS) on the chemical oxygen demand (COD) removal efficiency were evaluated using samples collected from the plant's inlet and ...
Emine Cangül, Ayşe Özgüven, Adnan Aldemir   +2 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

Manipulation of carbon media, temperature and hydraulic efficiency to increase nitrate removal rate in denitrification beds [PDF]

, 2011
The accumulation of reactive nitrogen (Nr) in terrestrial and aquatic environments is a global environmental issue that causes or contributes to climate change, stratospheric ozone depletion, and deterioration of coastal and terrestrial waters.
Cameron, Stewart Graham
core  

Biochar‐based fertilizers improve nutrient use efficiency in sunflower grown on a subtropical tidal soil

Biofuels, Bioproducts and Biorefining, EarlyView.
Abstract Improving fertilizer use efficiency is essential for reducing environmental pollution, sustaining agricultural production, and maximizing the economic profitability of crop production systems. This study tested the hypothesis that the formulation strategy of biochar‐based fertilizers, rather than nutrient addition alone, is associated with ...
Md. Al‐Amin, Miftahul Jannat Mim, S. M. Mahbubul Alam, Shamim Mia, M. M. Masud, Gopal Saha, Md. Abdul Kader, Keiji Jindo   +7 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

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