Investigation of photocatalytic ozonation treatment of water over WO 3 under visible light irradiation

Takayuki Mano; Shunsuke Nishimoto; Yoshikazu Kameshima; Michihiro Miyake

doi:10.2109/jcersj2.119.822

Investigation of photocatalytic ozonation treatment of water over WO ₃ under visible light irradiation

Takayuki Mano, Shunsuke Nishimoto, Yoshikazu Kameshima, Michihiro Miyake

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

14 Citations (Scopus)

Abstract

The aim of this study is to develop a highly efficient and environmentally friendly water treatment technique. Water treatment by photocatalytic ozonation over bare WO₃ under visible light irradiation (O₃/vis/ WO₃) system was performed under different experimental conditions using a phenol aqueous solution as model wastewater. The effects of parameters such as the initial phenol concentration, water temperature, and initial solution pH on the total organic carbon (TOC) removal efficiency in the O ₃/vis/ WO₃ system were investigated. The results suggest that the TOC removal process consists of three stages, and the combined effect of photocatalysis and ozonation, which is important for complete TOC removal, became dominant in the third stage. Furthermore, the TOC removal efficiency increased with increasing water temperature in the O₃/vis/WO ₃ system.

Original language	English
Pages (from-to)	822-827
Number of pages	6
Journal	Journal of the Ceramic Society of Japan
Volume	119
Issue number	1395
DOIs	https://doi.org/10.2109/jcersj2.119.822
Publication status	Published - Nov 2011

Keywords

Ozonation
Phenol
Tungsten oxide
Visible-light-responsive photocatalyst
Water treatment

ASJC Scopus subject areas

Ceramics and Composites
Chemistry(all)
Condensed Matter Physics
Materials Chemistry

Access to Document

10.2109/jcersj2.119.822

Cite this

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title = "Investigation of photocatalytic ozonation treatment of water over WO 3 under visible light irradiation",

abstract = "The aim of this study is to develop a highly efficient and environmentally friendly water treatment technique. Water treatment by photocatalytic ozonation over bare WO3 under visible light irradiation (O3/vis/ WO3) system was performed under different experimental conditions using a phenol aqueous solution as model wastewater. The effects of parameters such as the initial phenol concentration, water temperature, and initial solution pH on the total organic carbon (TOC) removal efficiency in the O 3/vis/ WO3 system were investigated. The results suggest that the TOC removal process consists of three stages, and the combined effect of photocatalysis and ozonation, which is important for complete TOC removal, became dominant in the third stage. Furthermore, the TOC removal efficiency increased with increasing water temperature in the O3/vis/WO 3 system.",

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author = "Takayuki Mano and Shunsuke Nishimoto and Yoshikazu Kameshima and Michihiro Miyake",

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AU - Mano, Takayuki

AU - Nishimoto, Shunsuke

AU - Kameshima, Yoshikazu

AU - Miyake, Michihiro

PY - 2011/11

Y1 - 2011/11

N2 - The aim of this study is to develop a highly efficient and environmentally friendly water treatment technique. Water treatment by photocatalytic ozonation over bare WO3 under visible light irradiation (O3/vis/ WO3) system was performed under different experimental conditions using a phenol aqueous solution as model wastewater. The effects of parameters such as the initial phenol concentration, water temperature, and initial solution pH on the total organic carbon (TOC) removal efficiency in the O 3/vis/ WO3 system were investigated. The results suggest that the TOC removal process consists of three stages, and the combined effect of photocatalysis and ozonation, which is important for complete TOC removal, became dominant in the third stage. Furthermore, the TOC removal efficiency increased with increasing water temperature in the O3/vis/WO 3 system.

AB - The aim of this study is to develop a highly efficient and environmentally friendly water treatment technique. Water treatment by photocatalytic ozonation over bare WO3 under visible light irradiation (O3/vis/ WO3) system was performed under different experimental conditions using a phenol aqueous solution as model wastewater. The effects of parameters such as the initial phenol concentration, water temperature, and initial solution pH on the total organic carbon (TOC) removal efficiency in the O 3/vis/ WO3 system were investigated. The results suggest that the TOC removal process consists of three stages, and the combined effect of photocatalysis and ozonation, which is important for complete TOC removal, became dominant in the third stage. Furthermore, the TOC removal efficiency increased with increasing water temperature in the O3/vis/WO 3 system.

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