标题：Degradation of the azo dye Orange G in a fluidized bed reactor using iron oxide as a heterogeneous photo-Fenton catalyst作者：Wang, Yan; Priambodo, Ricky; Zhang, Hui; Huang, Yao-Hui

来源出版物：RSC ADVANCES 卷：5 期：56 页：45276-45283 DOI：10.1039/c5ra04238k 出版年：2015

摘要：The heterogeneous Fenton process was employed to degrade Orange G (OG) using waste iron oxide as the catalyst in a three-phase fluidized bed reactor (3P-FBR). The morphology and the FTIR spectra of the used BT4 were compared with the fresh catalyst to illustrate the catalyst stability. The catalyst reusability was evaluated by measuring the colour removal in four successive cycles. The effects of major parameters, including pH, H2O2 concentration and catalyst addition on the decolourization of OG were investigated. A satisfactory decolourization efficiency (>92%) could be obtained under the conditions tested, and 78.9% of TOC removal was achieved at a 50 mg L-1 initial OG concentration, 25 mg L-1 H2O2 concentration, pH = 3 and 6 g L-1 BT4 addition. The decolourization of OG was mainly attributed to the homogeneous photo-Fenton reaction, while the heterogeneous catalytic process played an important role in TOC removal. The main intermediates were identified by the GC/MS technique and the degradation pathway of OG was proposed.

入藏号：

文献类型：Article

语种：English

扩展关键词：ULTRASONIC IRRADIATION; AQUEOUS-SOLUTION; PHOTOCATALYTIC DEGRADATION; ANODIC-OXIDATION; DECOLORIZATION; ACID; MINERALIZATION; SYSTEM; GOETHITE; REMOVAL

通讯作者地址：Zhang, Hui; Wuhan Univ, Dept Environm Engn, Wuhan 430079, Peoples R China.

电子邮件地址：eeng@whu.edu.cn; yhhuang@mail.ncku.edu.tw

地址：

[Wang, Yan; Zhang, Hui] Wuhan Univ, Dept Environm Engn, Wuhan 430079, Peoples R China.

[Wang, Yan] Anhui Sci & Technol Univ, Dept Environm Sci & Engn, Fengyang 233100, Peoples R China.

[Wang, Yan; Priambodo, Ricky; Huang, Yao-Hui] Natl Cheng Kung Univ, Dept Chem Engn, Tainan 701, Taiwan.

[Huang, Yao-Hui] Natl Cheng Kung Univ, Sustainable Environm Res Ctr, Tainan 701, Taiwan.

研究方向：Chemistry

ISSN：2046-2069