Results 31 to 40 of about 122,495 (304)

Reactivity-Based VOC Control for Solvent Products:  More Efficient Ozone Reduction Strategies [PDF]

Environmental Science & Technology, 2006
It has been almost 40 years since scientists and regulators began to publicly recognize that volatile organic compounds (VOCs) differ in their potential to form ozone. Since 1977, our understanding of the mechanisms by which VOCs contribute to ozone formation has grown substantially.
openaire   +2 more sources

Evaluation of Photochemical Pollution during Transport of Air Pollutants in Spring over the East China Sea

Asian Journal of Atmospheric Environment, 2015
We conducted intensive observations of ozone, CO, NOx (=NO and NO2), NOy (total odd nitrogen species including particulate nitrate) and total nitrate (the sum of gaseous HNO3 and particulate nitrate) at Cape Hedo, Okinawa, Japan, from 19 March to 3 April,
Yasuhiro Sadanaga, Tadashi Kobashi, Akie Yuba, Shungo Kato, Yoshizumi Kajii, Akinori Takami, Hiroshi Bandow   +6 more
doaj   +1 more source

Surface and lightning sources of nitrogen oxides over the United States: Magnitudes, chemical evolution, and outflow [PDF]

, 2007
We use observations from two aircraft during the ICARTT campaign over the eastern United States and North Atlantic during summer 2004, interpreted with a global 3-D model of tropospheric chemistry (GEOS-Chem) to test current understanding of regional ...
Avery, M A, Bertram, T H, Brune, William H, Cohen, Ronald C, Dibb, Jack E., Flocke, F, Fried, A, Gilliland, A B, Holloway, J S, Hudman, R C, Jacob, D J, Leibensperger, Eric M, Murray, L T, Neuman, J A, Orville, R, Perring, A E, Ren, Xinrong, Sachse, G W, Singh, H B, Swanson, Aaron L, Turquety, S, Wooldridge, Paul J, Wu, S   +22 more
core   +2 more sources

Improved Ozonation Efficiency for Polymerization Mother Liquid from Polyvinyl Chloride Production Using Tandem Reactors [PDF]

Molecules, 2019
Polymerization mother liquid (PML) is one of the main sources of wastewater in the chlor-alkali industry. The effective degradation of the PML produced in PVC polymerization using three or five ozone reactors in tandem was designed with a focus on improving the ozonation efficiency. The ozonation efficiency of the tandem reactors for the degradation of
Zhiyong Yang, Penglei Wang, Yagang Zhang, Xingjie Zan, Wenjuan Zhu, Yingfang Jiang, Letao Zhang, Akram Yasin   +7 more
openaire   +2 more sources

Impact of the isoprene photochemical cascade on tropical ozone [PDF]

, 2012
Tropical tropospheric ozone affects Earth's radiative forcing and the oxidative capacity of the atmosphere. Considerable work has been devoted to the study of the processes controlling its budget.
Henze, D. K., Paulot, F., Wennberg, P. O.   +2 more
core   +2 more sources

Phenol degradation using 20, 300 and 520 kHz ultrasonic reactors with hydrogen peroxide, ozone and zero valent metals [PDF]

, 2009
The extent of phenol degradation by the advanced oxidation process in the presence of zero valent iron (ZVI) and zero valent copper (ZVC) was studied using 20, 300 and 520 kHz ultrasonic (US) reactors.
Bremner, David H., Chand, Rashmi, Gogate, Parag R., Ince, Nilsun H.   +3 more
core   +3 more sources

Comparative Analysis of Energy Efficiency in High-Voltage Ozone Generators: Resonant Versus Non-Resonant Systems

Energies
The effective generation of ozone by high-voltage systems is essential for several industrial and environmental purposes. This paper performs a thorough comparative examination of energy efficiency in ozone generators, emphasizing resonant and non ...
Tongpian Prombud, Ekkapol Anusurain, Chainarong Wisassakwichai, Choosak Kamonkhantithorn   +3 more
doaj   +1 more source

Production of Secondary Organic Aerosol During Aging of Biomass Burning Smoke From Fresh Fuels and Its Relationship to VOC Precursors [PDF]

, 2019
After smoke from burning biomass is emitted into the atmosphere, chemical and physical processes change the composition and amount of organic aerosol present in the aged, diluted plume. During the fourth Fire Lab at Missoula Experiment, we performed smog-
Ahern, A. T, Barsanti, K. C, Donahue, N. M, Hatch, L. E, Presto, A. A, Robinson, A. L, Robinson, E. S, Saleh, R., Stockwell, C. E, Sullivan, R. C, Tkacik, D. S, Yokelson, R. J   +11 more
core   +2 more sources

Global tropospheric effects of aromatic chemistry with the SAPRC-11 mechanism implemented in GEOS-Chem version 9-02 [PDF]

Geoscientific Model Development, 2019
The Goddard Earth Observing System with chemistry (GEOS-Chem) model has been updated with the State-wide Air Pollution Research Center version 11 (SAPRC-11) aromatics chemical mechanism, with the purpose of evaluating global and regional effects of the ...
Y. Yan, Y. Yan, D. Cabrera-Perez, J. Lin, A. Pozzer, L. Hu, D. B. Millet, W. C. Porter, J. Lelieveld   +8 more
doaj   +1 more source

A Study of Tropospheric Ozone over China with a 3-D Global CTM Model

Terrestrial, Atmospheric and Oceanic Sciences, 2007
A global 3-D CTM model (OsloCTM2) has been used to study the tropospheric ozone distribution and budget over China. An area covering China and most of East Asia is chosen as the study area. Because of the very nevenly distributed emissions and population
Li Liu, Jostein K. Sundet, Yu Liu, Terje K. Berntsen, and Ivar S. A. Isaksen   +4 more
doaj   +2 more sources