基于固定相二氧化钛薄膜的新型多重石英管分布式光催化反应器及其水处理应用

CIESC Journal

• RESEARCH PAPERS • 上一篇下一篇

基于固定相二氧化钛薄膜的新型多重石英管分布式光催化反应器及其水处理应用

谢一兵; 沈讯伟; 袁春伟

National Laboratory of Molecular & Biomolecular Electronics, Southeast University, Nanjing
210096, China

收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2003-02-28 发布日期:2003-02-28
通讯作者: 谢一兵

A Novel Multi-Tube Photoreactor with UV Light and Immobilized TiO2 Thin Film for Water
Treatment

XIE Yibing; SHEN Xunwei; YUAN Chunwei

National Laboratory of Molecular & Biomolecular Electronics, Southeast University, Nanjing
210096, China

Received:1900-01-01 Revised:1900-01-01 Online:2003-02-28 Published:2003-02-28
Contact: XIE Yibing

摘要/Abstract

摘要： A novel multi-tube photoreactor with 0.0188 m3 valid reaction volume was constructed in
pilot-scale.This rectangular reactor consisted of 13 regularly distributed silica glass
tubes coating with TiO2 thin film photo-catalyst. Total active area of TiO2 thin film is
0.3916m2. The ratio of surface area to volume achieves 20.8m-1.Photocatalytic experiment of
phenol red demonstrates that the apparent reaction rate constant (k) is 0.074 65 h-1and
0.165 02 h-1 for reaction system with and without micro-bubbles mixing. The corresponding
apparent quantumefficiency (φa) is 8.1771 × 10-7 g.J-1 and 4.9036 × 10-7 g.J-1,
respectively. COD value of reactant could decreaseto 17 mg.L-1 and high performance liquid
chromatography (HPLC) only shows two absorption peaks in 24 h pho-tocatalytic process time,
so this photoreactor has good photomineralization effect. Experimental results reveal
thatphotocatalytic destruction of organics is possible by using the multi-tube
photoreactor.

关键词: photoreactor;photocatalyst;TiO2 thin film;apparent quantum efficiency

Abstract: A novel multi-tube photoreactor with 0.0188 m3 valid reaction volume was constructed in
pilot-scale.This rectangular reactor consisted of 13 regularly distributed silica glass
tubes coating with TiO2 thin film photo-catalyst. Total active area of TiO2 thin film is
0.3916m2. The ratio of surface area to volume achieves 20.8m-1.Photocatalytic experiment of
phenol red demonstrates that the apparent reaction rate constant (k) is 0.074 65 h-1and
0.165 02 h-1 for reaction system with and without micro-bubbles mixing. The corresponding
apparent quantumefficiency (φa) is 8.1771 × 10-7 g.J-1 and 4.9036 × 10-7 g.J-1,
respectively. COD value of reactant could decreaseto 17 mg.L-1 and high performance liquid
chromatography (HPLC) only shows two absorption peaks in 24 h pho-tocatalytic process time,
so this photoreactor has good photomineralization effect. Experimental results reveal
thatphotocatalytic destruction of organics is possible by using the multi-tube
photoreactor.

Key words: photoreactor, photocatalyst, TiO2 thin film, apparent quantum efficiency

谢一兵, 沈讯伟, 袁春伟. 基于固定相二氧化钛薄膜的新型多重石英管分布式光催化反应器及其水处理应用[J]. CIESC Journal.

XIE Yibing, SHEN Xunwei, YUAN Chunwei. A Novel Multi-Tube Photoreactor with UV Light and Immobilized TiO2 Thin Film for Water
Treatment[J]. .

参考文献

[1] Fujishima, A., Rao, T., Tryk, A.D., "Titanium dioxide photocatalysis", J. Photochem.
Photobiol. C: Photochem. Rev., 1, 1-21 (2000).
[2] Katsunori, Y., Masamichi, I., "Recent progress in environmental catalytic technology",
Catal. Surv. Jpn., 4, 83-90(2000).
[3] Molinari, R., Grande, C., "Photocatalytic membrance reac tors for degradation of
organic pollutant in water", Catal. Today, 67, 273-279 (2001).
[4] Wenzel, A., Gahr, A., Niessner, R., "Toc-removal and degradation of pollutants in
leachate using a thin-film photoreactor", Water Res., 33, 937-946 (1999).
[5] Byrne, J.A., Eggins, B.R., Brown, N.M.D., "Immobilization of TiO2 powder for treatment
of polluted water", Applied Catal. B: Environ., 17, 25-36 (1998).
[6] Ray, A.K., "A new photocatalytic reactor for destruction of toxic water pollutants by
advanced oxidation process", Catal. Today, 44, 357-368 (1998).
[7] Ray, A.K., Beenackers, A.C.M., "Development of a new photocatalytic reactor for water
purification", Catal. To day, 40, 73-83 (1998).
[8] Lu, Z.H., Zhao, Y.L., "Two-bubble class model for churn turbulent regime in a bubble
column slurry reactor of Fischer-Tropsch synthesis", Chinese J. Chem. Eng., 9, 84- 89
(2001).
[9] Leng, W.H., Liu, H., "Kinetics of photocatalytic degradation of aniline in water over
TiO2 supported on porous nickel", J. Photochem. Photobiol. A: Chem., 131, 125- 132 (2000).
[10] Shi, Z.F., Fan, Y.Q., Xu, N.P., "Kinetics of photocatalytic degradation of methylene
blue over TiO2 particles in aque ous suspensions", Chinese J. Chem. Eng., 8, 15-19 (2000).
[11] Okte, A.N., Resat, M.S., Inel, Y., "Quantum yield and relative photonic efficiencies
of substituted 1,3- dihydroxybenzenes", J. Photochem. Photobiol. A: Chem., 134, 59-70
(2000).
[12] Xie, Y.B., Yuan, C.W., "Calculation method of quantumeffi ciency to TiO2 nanocrystal
photocatalysis reaction", J.Environ. Sci., 14, 70-75 (2002).

基于固定相二氧化钛薄膜的新型多重石英管分布式光催化反应器及其水处理应用

A Novel Multi-Tube Photoreactor with UV Light and Immobilized TiO2 Thin Film for Water
Treatment

PDF (PC)

可视化

被引次数

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 0

编辑推荐

Metrics

本文评价

基于固定相二氧化钛薄膜的新型多重石英管分布式光催化反应器及其水处理应用

A Novel Multi-Tube Photoreactor with UV Light and Immobilized TiO2 Thin Film for Water Treatment

PDF (PC)

可视化

被引次数

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 0

编辑推荐

Metrics

本文评价

A Novel Multi-Tube Photoreactor with UV Light and Immobilized TiO2 Thin Film for Water
Treatment