Photo-catalytic destruction of ethylene using microwave discharge electrodeless lamp

Lee, Do-Jin; Park, Young-Kwon; Kim, Sun–Jae; Lee, Heon; Jung, Sang‐Chul

doi:10.1007/s11814-014-0326-6

Cited by 23 publications

(3 citation statements)

References 24 publications

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“…The emission spectrum of the lamp contains short wave ultraviolet, and the degradation rate can reach 93.4%. Lee et al 13 prepared anatase TiO 2 thin film photocatalyst microspheres by low‐pressure metal organic chemical vapor deposition method using double tube microwave electrodeless ultraviolet (mainly UVC) as catalyst for ethylene treatment. With the increase of microwave power, the degradation rate of ethylene increased.…”

Section: Introductionmentioning

confidence: 99%

Simulation of microwave electrodeless ultraviolet device and catalytic oxidation of toluene

Zhang

Liu

et al. 2022

Env Prog and Sustain Energy

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In order to improve the catalytic efficiency of toluene oxidation by heating catalyst and carrier in microwave single-mode sintering furnace, the SJ-1 microwave singlemode sintering furnace is modified, and microwave electroless UV lamp is placed in the resonant cavity, and the catalytic efficiency of toluene is improved by using microwave electroless lamp in cooperation with microwave heating catalyst and carrier. In order to design the cavity, High-Frequency Structure Simulator (HFSS) simula-

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Section: Introductionmentioning

confidence: 99%

Simulation of microwave electrodeless ultraviolet device and catalytic oxidation of toluene

Zhang

Liu

et al. 2022

Env Prog and Sustain Energy

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“…The microwave electrodeless UV lamp, which can be started and restarted instantaneously, owns the advantages of long life, small attenuation of light, high efficiency, energy saving and stable light output 8‐11 . The initial microwave electrodeless UV lamp structure is mainly inside the waveguide, and the excited plasma emits ultraviolet light in the waveguide 12 .…”

Section: Introductionmentioning

confidence: 99%

A new structure of microwave‐driven UV lamp

Zhong

Zhu

Yang

et al. 2020

Int J RF Microw Comput Aided Eng

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Microwave‐driven electrodeless UV lamps are widely used in industry. However, the ultraviolet light intensity of the traditional UV lamps is non‐uniform. In this article, a novel microwave‐driven UV lamp structure for underwater sterilization is developed, which equalizes the UV light intensity of each lamp at different positions. Based on the electromagnetic theory and the Drude model, finite difference time domain algorithm is adopted to obtain the dimensions of this new structure. An experimental system is established, and four UV lamp tubes are successfully excited and intensity of UV light at 253.7 nm is tested by spectrometer. Results show that the UV radiation of each lamp is almost same. The sensitivity of the structure is analyzed by changing the microwave power and electron density of the UV lamp. It can be found that significant changes in microwave power and electron density exhibit little effect on the uniformity of light intensity. Meanwhile, the microwave power should be large enough to excite the UV lamp and electron density may affect the S11 a little. Therefore, this structure can be applied to different types of UV lamps.

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“…AOPs can effectively remove difficult to decompose water contaminants, replacing traditional water treatment methods [8,9]. AOPs use hydroxyl radicals through a process that combines the Fenton reaction, TiO 2 photocatalyst, zero-valent iron, UV, H 2 O 2 , and ozone [10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Assessment of Degradation Behavior for Acetylsalicylic Acid Using a Plasma in Liquid Process

et al. 2019

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Acetylsalicylic acid (ASA) is a pharmacologically active compound. In this study, ASA was decomposed effectively using a plasma in liquid phase process with hydrogen peroxide and TiO2 photocatalyst. Increasing the electrical power conditions (frequency, applied voltage, and pulse width) promoted plasma generation, which increased the rate of ASA decomposition. The added hydrogen peroxide increased the rate of ASA degradation, but injecting an excess decreased the degradation rate due to a scavenger effect. Although there was an initial increase in the decomposition efficiency by the addition of TiO2 powder, the addition of an excessive amount inhibited the generation of plasma and decreased the degradation rate. The simultaneous addition of H2O2 and TiO2 powder resulted in the highest degradation efficiency. We suggest that ASA is converted to salicylic acid through demethylation by hydroxyl radicals and is finally mineralized to carbon dioxide and water via 2,4-dihydroxy benzoic acid and low molecular acids.

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Photo-catalytic destruction of ethylene using microwave discharge electrodeless lamp

Cited by 23 publications

References 24 publications

Simulation of microwave electrodeless ultraviolet device and catalytic oxidation of toluene

Simulation of microwave electrodeless ultraviolet device and catalytic oxidation of toluene

A new structure of microwave‐driven UV lamp

Assessment of Degradation Behavior for Acetylsalicylic Acid Using a Plasma in Liquid Process

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