Optimization of photocatalytic degradation of sulphonated diazo dye C.I. Reactive Green 19 using ceramic-coated TiO2 nanoparticles

M. Rastegar; K. Rahmati Shadbad; A. R. Khataee; R. Pourrajab

doi:10.1080/09593330.2011.604859

Optimization of photocatalytic degradation of sulphonated diazo dye C.I. Reactive Green 19 using ceramic-coated TiO₂ nanoparticles

M. Rastegar, K. Rahmati Shadbad, A. R. Khataee^*, R. Pourrajab

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

34 Citations (Scopus)

Abstract

Optimization of photocatalytic degradation of C.I. Reactive Green 19 (RG19) under UV light irradiation using ceramic-coated TiO2 nanoparticles in a continuous circulation rectangular photoreactor was studied. The used catalyst was TiO₂ Millennium PC-500 (crystallite mean size 8nm) immobilized on ceramic plates. A central composite design was used for optimization of the UV/TiO₂ process. Predicted values of decolorization efficiency were found to be in good agreement with experimental values (R²=0.97 and Adj-R²=0.91). Optimization results showed that maximum decolorization efficiency was achieved at the optimum conditions of: initial dye concentration 10mg/L, UV light intensity 47.2W/m², flow rate 150mL/min and reaction time 240 min. Photocatalytic mineralization of RG19 was monitored by chemical oxygen demand (COD) decrease and changes in the UV-Vis spectrum.

Original language	English
Pages (from-to)	995-1003
Number of pages	9
Journal	Environmental Technology (United Kingdom)
Volume	33
Issue number	9
DOIs	https://doi.org/10.1080/09593330.2011.604859
Publication status	Published - 1 May 2012
Externally published	Yes

Keywords

Ceramic plates
Immobilization
Photodegradation
Response surface methodology

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10.1080/09593330.2011.604859

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title = "Optimization of photocatalytic degradation of sulphonated diazo dye C.I. Reactive Green 19 using ceramic-coated TiO2 nanoparticles",

abstract = "Optimization of photocatalytic degradation of C.I. Reactive Green 19 (RG19) under UV light irradiation using ceramic-coated TiO2 nanoparticles in a continuous circulation rectangular photoreactor was studied. The used catalyst was TiO2 Millennium PC-500 (crystallite mean size 8nm) immobilized on ceramic plates. A central composite design was used for optimization of the UV/TiO2 process. Predicted values of decolorization efficiency were found to be in good agreement with experimental values (R2=0.97 and Adj-R2=0.91). Optimization results showed that maximum decolorization efficiency was achieved at the optimum conditions of: initial dye concentration 10mg/L, UV light intensity 47.2W/m2, flow rate 150mL/min and reaction time 240 min. Photocatalytic mineralization of RG19 was monitored by chemical oxygen demand (COD) decrease and changes in the UV-Vis spectrum.",

keywords = "Ceramic plates, Immobilization, Photodegradation, Response surface methodology",

author = "M. Rastegar and Shadbad, {K. Rahmati} and Khataee, {A. R.} and R. Pourrajab",

year = "2012",

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doi = "10.1080/09593330.2011.604859",

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AU - Rastegar, M.

AU - Shadbad, K. Rahmati

AU - Khataee, A. R.

AU - Pourrajab, R.

PY - 2012/5/1

Y1 - 2012/5/1

N2 - Optimization of photocatalytic degradation of C.I. Reactive Green 19 (RG19) under UV light irradiation using ceramic-coated TiO2 nanoparticles in a continuous circulation rectangular photoreactor was studied. The used catalyst was TiO2 Millennium PC-500 (crystallite mean size 8nm) immobilized on ceramic plates. A central composite design was used for optimization of the UV/TiO2 process. Predicted values of decolorization efficiency were found to be in good agreement with experimental values (R2=0.97 and Adj-R2=0.91). Optimization results showed that maximum decolorization efficiency was achieved at the optimum conditions of: initial dye concentration 10mg/L, UV light intensity 47.2W/m2, flow rate 150mL/min and reaction time 240 min. Photocatalytic mineralization of RG19 was monitored by chemical oxygen demand (COD) decrease and changes in the UV-Vis spectrum.

AB - Optimization of photocatalytic degradation of C.I. Reactive Green 19 (RG19) under UV light irradiation using ceramic-coated TiO2 nanoparticles in a continuous circulation rectangular photoreactor was studied. The used catalyst was TiO2 Millennium PC-500 (crystallite mean size 8nm) immobilized on ceramic plates. A central composite design was used for optimization of the UV/TiO2 process. Predicted values of decolorization efficiency were found to be in good agreement with experimental values (R2=0.97 and Adj-R2=0.91). Optimization results showed that maximum decolorization efficiency was achieved at the optimum conditions of: initial dye concentration 10mg/L, UV light intensity 47.2W/m2, flow rate 150mL/min and reaction time 240 min. Photocatalytic mineralization of RG19 was monitored by chemical oxygen demand (COD) decrease and changes in the UV-Vis spectrum.

KW - Ceramic plates

KW - Immobilization

KW - Photodegradation

KW - Response surface methodology

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Optimization of photocatalytic degradation of sulphonated diazo dye C.I. Reactive Green 19 using ceramic-coated TiO₂ nanoparticles

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Keywords

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