Vacuum-ultraviolet photolysis of aqueous reaction systems

González, Mónica C.; Oliveros, Esther; Wörner, Michael; Braun, André M.

doi:10.1016/j.jphotochemrev.2004.10.002

Cited by 306 publications

(161 citation statements)

References 65 publications

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“…Due to the high absorption cross-section of water and quantum yields of water homolysis of 0.45-0.3 at stimulation wavelengths (between 140 and 185 nm) provide productive local concentrations of hydroxyl and hydrogen radicals. VUV photolysis is a new technique for water treatment and suggests the benefit to generate unusually high local concentrations of oxidative reactive intermediates without the addition of supplementary oxidant [44,54].…”

Section: Vacuum Uv (Vuv) Photolysismentioning

confidence: 99%

Treatment of Antibiotics in Wastewater Using Advanced Oxidation Processes (AOPs)

Kurt¹,

Mert²,

Özengi̇n³

et al. 2017

Physico-Chemical Wastewater Treatment and Resource Recovery

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Antibiotics are nonbiodegradable, can survive at aquatic environments for long periods and they have a big potential bio-accumulation in the environment. They are extensively metabolized by humans, animals and plants. After metabolization, antibiotics or their metabolites are excreted into the aquatic environment. Removal of these compounds from the aquatic environment is feasible by different processes. But antibiotics are not treated in conventional wastewater treatment plants efficiently. During the last years studies with advanced oxidation processes (AOPs) for removal of these pharmaceuticals from waters has shown that they can be useful for removing them fully. Advanced oxidation processes (AOPs) can work as alternatives or complementary method in traditional wastewater treatment, and highly reactive free radicals, especially hydroxyl radicals (OH) generated via chemical (O 3 /H 2 O 2 ,O 3 /OH -), photochemical (UV/O 3 ,O 3 /H 2 O 2 ) reactions, serve as the main oxidant. This study presents an overview of the literature on antibiotics and their removal from water by advanced oxidation processes. It includes almost all types of antibiotics which are consumed by human and veterinary processes. It was found that most of the investigated advanced oxidation treatment processes for the oxidation of antibiotics in water are direct and indirect photolysis with the combinations of H 2 O 2 ,TiO 2 , ozone and Fenton's reagent.

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Section: Vacuum Uv (Vuv) Photolysismentioning

confidence: 99%

Treatment of Antibiotics in Wastewater Using Advanced Oxidation Processes (AOPs)

Kurt¹,

Mert²,

Özengi̇n³

et al. 2017

Physico-Chemical Wastewater Treatment and Resource Recovery

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“…Some of these applications concern photo-chemical treatment of water [Azrague K et al 2005, Gonzalez et al 2004, volatile organic compound (VOC) remediation [Biomorgi J et al 2005, Koutsospyros A et al 2004, biochemical decontamination and remediation of toxic gases [Herrman H W et al 1999], realisation of non-coherent vacuum ultraviolet (VUV: 100 nm < λ < 200 nm) or ultraviolet (UV: 200 nm < λ < 400 nm) sources [Kurunczi P et al 1999, Masoud N et al 2004, material deposition [Babayan S E et al 1998], H 2 generation for fuel cells and diesel reforming [Qiu H et al 2004, exhaust treatment [Dietz et al 2004] … As far as non-coherent radiation DBD sources are concerned, VUV sources are of topical interest for a variety of industrial purposes such as plasma processing [Kogelschatz U et al 1999], surface cleaning [Korfatis G et al 2002] and modification [Wagner H-E et al 2003, Borcia G et al 2003, sterilization, decontamination and medical care. Recently some emerging scientific investigations were performed in neon [Carman R J et al 2010].…”

Section: Introductionmentioning

confidence: 99%

Electric and spectroscopic analysis of a pure nitrogen mono-filamentary dielectric barrier discharge (MF-DBD) at 760 Torr

Sewraj¹,

Merbahi²,

Gardou³

et al. 2011

J. Phys. D: Appl. Phys.

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To cite this version:N Sewraj, N Merbahi, J P Gardou, P Rodriguez Akerreta, F Marchal. Electric and spectroscopic analysis of a pure nitrogen mono-filamentary dielectric barrier discharge (MF-DBD) at 760Torr. Journal of Physics D: Applied Physics, IOP Publishing, 2011, 44 (14) AbstractAs far as we know, VUV emissions of nitrogen MF-DBDs have never been reported before.Mono-filamentary dielectric barrier discharge (MF-DBD), occurring within 1-mm gap of atmospheric pressure pure nitrogen and operating with a sinusoidal electric supply at about 8 kHz, is studied in this paper.A thorough electrical analysis allows experimental determination of the ignition and extinction voltages,respectively (

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“…As the wavelength of VUV spectral domain (100-200 nm, mainly at 185 nm) is shorter than that of normal UV (Gonzalez et al, 2004), it can produce photons with higher energy level. Therefore, many studies have been carried out to achieve photo-degradation of pollutants by VUV photolysis alone .…”

Section: Photolysismentioning

confidence: 99%

“…In the VUV photolysis of aqueous reaction systems, photolysis of water is the main pathway to produce hydroxyl radical (Gonzalez et al, 2004;Zoschke et al, 2014). Water absorbs light strongly at wavelengths lower than 190 nm.…”

Section: Photolysismentioning

confidence: 99%

Recent Development of VUV-Based Processes for Air Pollutant Degradation

Huang

et al. 2016

Front. Environ. Sci.

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As air pollution poses a great challenge around the globe, it is essential to fashion out a way of efficiently degrading the air pollutants. Vacuum Ultraviolet (VUV)-based processes are an emerging and promising technology for environmental remediation such as air cleaning, wastewater treatment, and air/water disinfection. When VUV irradiation, photolysis, photocatalysis, and ozone-assisted oxidation are involved at the same time, it results in the fast degradation of air pollutants because of their strong oxidizing capacity. The mechanisms of how the oxidants are produced and how they react are discussed in this review. This paper focuses mainly on the three VUV-based oxidation processes including VUV photolysis, VUV combined with ozone-assisted oxidation, and VUV-PCO with emphasis on their mechanisms and applications. Also, the outlook of these processes are proposed in this paper.

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Vacuum-ultraviolet photolysis of aqueous reaction systems

Cited by 306 publications

References 65 publications

Treatment of Antibiotics in Wastewater Using Advanced Oxidation Processes (AOPs)

Treatment of Antibiotics in Wastewater Using Advanced Oxidation Processes (AOPs)

Electric and spectroscopic analysis of a pure nitrogen mono-filamentary dielectric barrier discharge (MF-DBD) at 760 Torr

Recent Development of VUV-Based Processes for Air Pollutant Degradation

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