Results 41 to 50 of about 19,477 (187)

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  

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

Contribution of Particulate and Mineral-Associated Organic Matter to Potential Denitrification of Agricultural Soils

Frontiers in Environmental Science, 2021
Water-extractable organic carbon (WEOC) is considered as the most important carbon (C) source for denitrifying organisms, but the contribution of individual organic matter (OM) fractions (i.e., particulate (POM) and mineral-associated (MOM)) to its ...
Ronny Surey, Klaus Kaiser, Corinna M. Schimpf, Carsten W. Mueller, Jürgen Böttcher, Robert Mikutta   +5 more
doaj   +1 more source

Uncovering Cystic Fibrosis Carrier: Insights From a Heterozygous CFTR‐F508del Rabbit Model

International Forum of Allergy &Rhinology, EarlyView.
ABSTRACT Background Chronic rhinosinusitis (CRS) is a heterogeneous inflammatory disorder frequently associated with impaired mucociliary clearance and bacterial infection. Individuals carrying a single cystic fibrosis transmembrane conductance regulator (CFTR) mutation exhibit partial CFTR dysfunction and are increasingly recognized as being at risk ...
Do‐Yeon Cho, Alexis E. McFeely, Daniel Skinner, Shaoyan Zhang, Justin Hedvat, Weslee Ping‐ay, Daniel M. Beswick, Justin H. Turner, Bradford A. Woodworth, Jie Xu   +9 more
wiley   +1 more source

Research on the Detoxification of Municipal Solid Waste Incineration Fly Ash: Organic Acid Washing Pretreatment Coupled With Cement/DDTC Stabilization

Asia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT Heavy metals in municipal waste incineration fly ash are potentially harmful to the ecological environment and human health. To mitigate the hazards of fly ash, this study attempts to detoxify fly ash through organic acid washing pretreatment coupled with cement/sodium diethyldithiocarbamate (DDTC) solidification.
Junfeng Pang, Tong Tian, Yaji Huang, Zhicheng Zhu, Zhiyuan Li   +4 more
wiley   +1 more source

AEROBIC DENITRIFICATION

Annals of Applied Biology, 1940
DENITRIFICAITION is the reduction of nitrates to gaseous nitrogen, sometimes mixed with oxides of nitrogen: it is the only process which certainly causes a loss of nitrogen in nature, because the nitrogen gas escapes into the atmosphere. It is known that nitrite certainly, and probably hyponitrite, are formed as intermediates in the course of the ...
openaire   +1 more source

Vitamin C‐Assisted Synthesis of Novel Cu‐SSZ‐13 Zeolite and Its High‐Efficiency Performance in Diesel Vehicle NOx Exhaust Purification

Asia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT Diesel vehicle‐derived NOx is a major pollutant, and NH3‐SCR with Cu‐SSZ‐13 is the mainstream abatement technology. In this study, vitamin C (Vc) was used as a crystal growth regulator to successfully synthesize Cu‐SSZ‐13‐Vc0.3 via the hydrothermal method. Experimental results demonstrate that the introduction of Vc significantly optimizes the
Siqi Wu, Xin Yan, Tianyu Li, Tianyi Fu, Yange Hou, Xinyan Zhang, Xin Zhang   +6 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

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

Autotrophic Denitrification for Nitrate Removal from Groundwater with an Integrated Microbial Fuel Cells (MFCs)-microbial Electrolysis Cell (MEC) System

International Journal of Electrochemical Science, 2021
Bioelectrochemical system (BES) that is self-sufficient was developed to treat nitrate in groundwater, which consists of air cathode microbial fuel cell (MFC) and microbial electrolysis cell (MEC). Without external power, the highest nitrate removal rate
Chengye Wang, Yue Wu, Wei Hu, Yan Li
doaj   +1 more source