Application of H-titanate nanofibers for degradation of Congo Red in an annular slurry photoreactor

被引：61

作者：

Chong, Meng Nan ^{[1
,2
]}

Jin, Bo ^{[1
,2
,3
]}

Zhu, H. Y. ^{[4
]}

Chow, C. W. K. ^{[3
]}

Saint, Chris ^{[1
,3
]}

机构：

[1] Univ Adelaide, Sch Earth & Environm Sci, Adelaide, SA 5005, Australia

[2] Univ Adelaide, Sch Chem Engn, Adelaide, SA 5005, Australia

[3] SA Water Corp, Australian Water Qual Ctr, Bolivar, SA 5110, Australia

[4] Queensland Univ Technol, Sch Phys & Chem Sci, Brisbane, Qld 4001, Australia

来源：

CHEMICAL ENGINEERING JOURNAL | 2009年 / 150卷 / 01期

基金：

澳大利亚研究理事会;

关键词：

TiO2; Nanofibers; Congo Red; Annular reactor; Photocatalysis; Degradation; PHOTOCATALYTIC DEGRADATION; TITANIUM-DIOXIDE; MEMBRANE REACTOR; METHYLENE-BLUE; ORANGE-II; TIO2; PHOTODEGRADATION; KINETICS; REMOVAL; NANOPARTICLES;

D O I：

10.1016/j.cej.2008.12.002

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Anatase nanofibers (TiO2-N) were synthesized as photocatalyst for the application in an annular slurry photoreactor (ASP). The unique properties of TiO2-N have facilitated its high reactivity and suitability for water treatment. The influence of operational variables: TiO2-N loading, pH, aeration rate and dye concentration on the photo-degradation kinetics and efficiency to remove a model compound of Congo Red (CR) were investigated. The photo-degradation kinetics of CR followed the Langmuir-Hinshelwood regime at lower pH. The Langmuir adsorption constant. KL-H was determined as 7.695 x 10(2) dm(3) mol(-1). The optimal photo-degradation rate of 3.47 x 10(-2) mol dm(-3) min(-1) was achieved at 60 ppm CR, pH 3, aeration rate of 5 dm(3) min(-1) and TiO2-N loading of 4 g dm(-3). Batch settling tests based on Kynch's theory revealed that the TiO2-N photocatalysts could produce a settling velocity of 8.38 x 10(-4) ms(-1). It Was expected that these novel TiO2-N particles can deliver a true engineering Solution as an industrial process for photocatalytic water treatment. Crown Copyright (C) 2008 Published by Elsevier B.V. All rights reserved.

引用

页码：49 / 54

页数：6

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