Photo-catalytic degradation of rhodamine B using microwave powered electrodeless discharge lamp

Chae, Jeong-Seok; Jung, Dong-Suk; Bae, Yeong-Seon; Park, Sunghoon; Lee, Do-Jin; Kim, Sun–Jae; Kim, Byung Hoon; Jung, Sang‐Chul

doi:10.1007/s11814-010-0060-7

Cited by 5 publications

(2 citation statements)

References 16 publications

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“…At pH 4 Fig. 6b , the NH 4 yield was 10.5 UV/ ROS , 13 UV , 38.5 ROS , and at pH 10 Fig. 6c , the amount of ammonium ions was 24 UV/ROS , 4 UV , and 14.5…”

Section: Degradation Of the Urea In Aqueous Solutionmentioning

confidence: 95%

Microwave Discharge Electrodeless Lamps (MDELs). Part XI. Photolytic, Chemical Oxidation, and Photocatalytic Treatment of Aqueous Urea Solution with a Novel MDEL Photoreactor

2018

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Decomposition of urea in aqueous solution was carried out using a microwave discharge electrodeless lamp (MDEL) consisting of two photoreactors with a triple tube structure that generate vacuum-UV/UV light and reactive oxygen species (ROS) using microwaves (MW) as an energy source. The rate of decomposition of urea was highest under acidic conditions (pH 4) compared with those at pH 7 and 10. When used in combination with dispersed TiO, a photocatalyst, high decomposition efficiency was achieved with less power consumption. Moreover, decomposition efficiency more than two times higher than that of ozone oxidation and sodium hypochlorite oxidation could be realized.

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“…At pH 4 Fig. 6b , the NH 4 yield was 10.5 UV/ ROS , 13 UV , 38.5 ROS , and at pH 10 Fig. 6c , the amount of ammonium ions was 24 UV/ROS , 4 UV , and 14.5…”

Section: Degradation Of the Urea In Aqueous Solutionmentioning

confidence: 95%

Microwave Discharge Electrodeless Lamps (MDELs). Part XI. Photolytic, Chemical Oxidation, and Photocatalytic Treatment of Aqueous Urea Solution with a Novel MDEL Photoreactor

2018

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“…Microwave discharge electrodeless lamps (MDELs) have proven useful light sources to decontaminate polluted water since both UV and microwave radiations can be applied simultaneously to induce degradative processes for destroying organics and microorganisms 2–10. For equal power consumption, MDELs are more effective than conventional low‐pressure Hg lamps 11.…”

Section: Introductionmentioning

confidence: 99%

Microwave Discharge Electrodeless Lamps. Part VIII: Continuous On‐Site Solar Energy Remediation of Contaminated Water

et al. 2015

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Microwave discharge electrodeless lamps (MDELs) have been examined for continuous on-site field treatment of contaminated water using solar cells to provide the necessary electrical power. The equipment aimed to decontaminate water in areas impacted by natural disasters such as the extensive earthquake that hit Eastern Japan in 2011. An energy-saving semiconductor microwave generator provided the microwaves to activate the MDELs in a microwave/UV reactor setup operated using a single-mode applicator and an E/H tuner. The herbicide 2,4-dichlorophenoxyacetic acid degraded within a shorter time compared to methylene blue at a defined flow rate through the microwave/UV reactor. Sterilization of natural water contaminated with the bacterial microorganism Escherichia coli was complete within 20 min.High-purity grade 2,4-dichlorophenoxyacetic acid (LD 50-rat = 370 mg kg -1 ) and methylene blue were obtained from Wako Pure Chemical Industries Ltd. They were dissolved in ion-exchanged water (pH 6.4) and served as models of contaminated water.The time profiles of the microwave-/UV (MW/UV)-assisted degradation of 2,4-D were obtained with a JASCO liquid chromatograph (HPLC) equipped with a JASCO UV-2070 UV/ visible diode array multiwavelength detector, and a JASCO Crestpak C-18S column; the eluent was a mixed solution of CH 3 OH and H 2 O (1:4 v/v). Time profiles of concentration www.cet-journal.com

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Microwaves in Photochemistry and Photocatalysis

Cı́rkva

2012

Microwaves in Organic Synthesis

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Photo-catalytic degradation of rhodamine B using microwave powered electrodeless discharge lamp

Cited by 5 publications

References 16 publications

Microwave Discharge Electrodeless Lamps (MDELs). Part XI. Photolytic, Chemical Oxidation, and Photocatalytic Treatment of Aqueous Urea Solution with a Novel MDEL Photoreactor

Microwave Discharge Electrodeless Lamps (MDELs). Part XI. Photolytic, Chemical Oxidation, and Photocatalytic Treatment of Aqueous Urea Solution with a Novel MDEL Photoreactor

Microwave Discharge Electrodeless Lamps. Part VIII: Continuous On‐Site Solar Energy Remediation of Contaminated Water

Microwaves in Photochemistry and Photocatalysis

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