Prediction of advanced oxidation performance in various pilot UV/H2O2 reactor systems with MP- and LP- and DBD-UV lamps

Hofman‐Caris, Roberta; Harmsen, D.J.H.; Beerendonk, E.F.; Knol, T; Houtman, Corine J.; Metz, Deborah H.; Wols, B.A.

doi:10.1016/j.cej.2012.09.041

Cited by 15 publications

(7 citation statements)

References 23 publications

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“…The absorption of UV and vacuum ultraviolet (VUV) photons by water and impurities is well understood and characterized in the context of advanced oxidation processing (AOP) in water purification. There is a large knowledge base for plasma-liquid modeling that can be transferred from the AOP community in the context of removing pollutants from water [239,240]. This knowledge base includes the photolysis of water and impurities [241,242], radiation transport [243] and rate coefficients for reaction of reactive oxygen species (ROS) with organic and molecular species [184].…”

Section: Introductionmentioning

confidence: 99%

Plasma–liquid interactions: a review and roadmap

Bruggeman

Kushner

Locke

et al. 2016

Plasma Sources Sci. Technol.

1,291

885

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Plasma-liquid interactions represent a growing interdisciplinary area of research involving plasma science, fluid dynamics, heat and mass transfer, photolysis, multiphase chemistry and aerosol science. This review provides an assessment of the state-of-the-art of this multidisciplinary area and identifies the key research challenges. The developments in diagnostics, modeling and further extensions of cross section and reaction rate databases that are necessary to address these challenges are discussed. The review focusses on nonequilibrium plasmas.

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Section: Introductionmentioning

confidence: 99%

Plasma–liquid interactions: a review and roadmap

Bruggeman

Kushner

Locke

et al. 2016

Plasma Sources Sci. Technol.

1,291

885

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“…Various methods have been developed based on the two mentioned routes. For example, a pipe-type reactor with a small diameter has been explored for maximization of ultraviolet light intensity [17][18][19]22]. However, this method has the disadvantage that the long contact time (residence time) required for the reaction can be only obtained by designing a long reaction pipe, which is normally limited by actual situations.…”

Section: Comparison Of Experimental and Simulation Resultsmentioning

confidence: 99%

“…The RAVR integrated the flow characteristics of a continuous-flow stirred-tank reactor (CSTR) and a plug flow reactor (PFR). As mentioned in Section 1, the RAVR is an economical reactor with good mixing function compared with long tubular reactors [17][18][19] or reactors with internal baffles [3,20,21]. The rotating flow along the VUV lamp in a RAVR reactor plays the role of mixing and extending the fluid-retention time, and there is thus no dead zone in a RAVR reactor.…”

Section: Hydrodynamicsmentioning

confidence: 99%

Computational Fluid Dynamics Modeling of Rotating Annular VUV/UV Photoreactor for Water Treatment

Luo

Kang

et al. 2020

Processes

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The ultraviolet photochemical degradation process is widely recognized as a low-cost, environmentally friendly, and sustainable technology for water treatment. This study integrated computational fluid dynamics (CFD) and a photoreactive kinetic model to investigate the effects of flow characteristics on the contaminant degradation performance of a rotating annular photoreactor with a vacuum-UV (VUV)/UV process performed in continuous flow mode. The results demonstrated that the introduced fluid remained in intensive rotational movement inside the reactor for a wide range of inflow rates, and the rotational movement was enhanced with increasing influent speed within the studied velocity range. The CFD modeling results were consistent with the experimental abatement of methylene blue (MB), although the model slightly overestimated MB degradation because it did not fully account for the consumption of OH radicals from byproducts generated in the MB decomposition processes. The OH radical generation and contaminant degradation efficiency of the VUV/UV process showed strong correlation with the mixing level in a photoreactor, which confirmed the promising potential of the developed rotating annular VUV reactor in water treatment.

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“…This can be used in both gas and liquid phases as long as UV transparent windows, such as quartz, are used in the measurements [8,9]. However, water and many organic compounds, such as those encountered in cell culture media, absorb in the UV, limiting the applicability of UV absorption in many practical scenarios [10,11].…”

Section: Introductionmentioning

confidence: 99%

Quantification of the Ozone Dose Delivered into a Liquid by Indirect Plasma Treatments: Method and Calibration of the Pittsburgh Green Fluorescence Probe

Wright

Fuster

Shaw

et al. 2018

Plasma Chem Plasma Process

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Determination of the ozone dose delivered into liquids by plasma systems is of importance in many emerging plasma applications, such as plasma medicine. Quantification of this dose remains extremely challenging due to the complex physico-chemical processes encountered in the gas plasma, the plasma-liquid interface and the liquid itself. Chemical probes have the potential to address the limitation of more traditional plasma diagnostic techniques but most commercial chemical probes are not specific enough to be used in plasma applications. Here we report on the development of a method for the quantification of the ozone delivered into a liquid using Pittsburgh Green, a novel ozone-selective fluorescence probe. Entailed within this work is a method for the preparation of the probe solutions, the design of a calibration system and a normalized calibration curve correlating fluorescence intensity to actual ozone dose delivered to the liquid. This enables the quantitative comparison of ozone measurements performed with different spectrofluorometers and in different institutions.

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Prediction of advanced oxidation performance in various pilot UV/H2O2 reactor systems with MP- and LP- and DBD-UV lamps

Cited by 15 publications

References 23 publications

Plasma–liquid interactions: a review and roadmap

Plasma–liquid interactions: a review and roadmap

Computational Fluid Dynamics Modeling of Rotating Annular VUV/UV Photoreactor for Water Treatment

Quantification of the Ozone Dose Delivered into a Liquid by Indirect Plasma Treatments: Method and Calibration of the Pittsburgh Green Fluorescence Probe

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