Degradation kinetics of reactive dye by UV/H2O2/US process under continuous mode operation

P. C. Fung; Chi Sun Poon; C. W. Chu; S. M. Tsui

Degradation kinetics of reactive dye by UV/H₂O₂/US process under continuous mode operation

P. C. Fung, Chi Sun Poon, C. W. Chu, S. M. Tsui

Research output: Journal article publication › Journal article › Academic research › peer-review

Abstract

Degradation of a dye, C.I. Reactive Red 120, in dyeing wastewater by the process of UV/H2O2/US was studied with a bench-scale reactor under the continuous mode of operation. The effects of dyeing wastewater flow rate and the feeding rate of an oxidant, H2O2, on the color removal efficiency of the process were investigated. The significance of ultrasonic (US) combined with UV irradiation was also investigated and the performance of the process on color removal were evaluated. The results showed that the decoloration process followed a pseudo first-order kinetic model and the UV light is the most significant factor on dye removal. Besides, at higher flow rates, incomplete color removal was observed due to relatively insufficient irradiation time (low degradation rate). In order to achieve a higher degradation rate, the feeding rate of H2O2should be increased.

Original language	English
Pages (from-to)	67-72
Number of pages	6
Journal	Water Science and Technology
Volume	44
Issue number	6
Publication status	Published - 17 Nov 2001

Keywords

Continuous operation
Feeding rate
Hydrogen peroxide
Photodecoloration
Sonication

ASJC Scopus subject areas

Environmental Engineering
Water Science and Technology

Cite this

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title = "Degradation kinetics of reactive dye by UV/H2O2/US process under continuous mode operation",

abstract = "Degradation of a dye, C.I. Reactive Red 120, in dyeing wastewater by the process of UV/H2O2/US was studied with a bench-scale reactor under the continuous mode of operation. The effects of dyeing wastewater flow rate and the feeding rate of an oxidant, H2O2, on the color removal efficiency of the process were investigated. The significance of ultrasonic (US) combined with UV irradiation was also investigated and the performance of the process on color removal were evaluated. The results showed that the decoloration process followed a pseudo first-order kinetic model and the UV light is the most significant factor on dye removal. Besides, at higher flow rates, incomplete color removal was observed due to relatively insufficient irradiation time (low degradation rate). In order to achieve a higher degradation rate, the feeding rate of H2O2should be increased.",

keywords = "Continuous operation, Feeding rate, Hydrogen peroxide, Photodecoloration, Sonication",

author = "Fung, {P. C.} and Poon, {Chi Sun} and Chu, {C. W.} and Tsui, {S. M.}",

year = "2001",

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T1 - Degradation kinetics of reactive dye by UV/H2O2/US process under continuous mode operation

AU - Fung, P. C.

AU - Poon, Chi Sun

AU - Chu, C. W.

AU - Tsui, S. M.

PY - 2001/11/17

Y1 - 2001/11/17

N2 - Degradation of a dye, C.I. Reactive Red 120, in dyeing wastewater by the process of UV/H2O2/US was studied with a bench-scale reactor under the continuous mode of operation. The effects of dyeing wastewater flow rate and the feeding rate of an oxidant, H2O2, on the color removal efficiency of the process were investigated. The significance of ultrasonic (US) combined with UV irradiation was also investigated and the performance of the process on color removal were evaluated. The results showed that the decoloration process followed a pseudo first-order kinetic model and the UV light is the most significant factor on dye removal. Besides, at higher flow rates, incomplete color removal was observed due to relatively insufficient irradiation time (low degradation rate). In order to achieve a higher degradation rate, the feeding rate of H2O2should be increased.

AB - Degradation of a dye, C.I. Reactive Red 120, in dyeing wastewater by the process of UV/H2O2/US was studied with a bench-scale reactor under the continuous mode of operation. The effects of dyeing wastewater flow rate and the feeding rate of an oxidant, H2O2, on the color removal efficiency of the process were investigated. The significance of ultrasonic (US) combined with UV irradiation was also investigated and the performance of the process on color removal were evaluated. The results showed that the decoloration process followed a pseudo first-order kinetic model and the UV light is the most significant factor on dye removal. Besides, at higher flow rates, incomplete color removal was observed due to relatively insufficient irradiation time (low degradation rate). In order to achieve a higher degradation rate, the feeding rate of H2O2should be increased.

KW - Continuous operation

KW - Feeding rate

KW - Hydrogen peroxide

KW - Photodecoloration

KW - Sonication

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M3 - Journal article

C2 - 11700666

SN - 0273-1223

VL - 44

SP - 67

EP - 72

JO - Water Science and Technology

JF - Water Science and Technology

IS - 6

ER -

Degradation kinetics of reactive dye by UV/H₂O₂/US process under continuous mode operation

Abstract

Keywords

ASJC Scopus subject areas

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