标题：Decolorization of Crystal Violet by ultrasound/heterogeneous Fenton process作者：Zhang, Hui; Gao, Hong; Cai, Chun; Zhang, Chunyang; Chen, Lu

来源出版物：WATER SCIENCE AND TECHNOLOGY 卷：68 期：11 页：2515-2520 DOI：10.2166/wst.2013.539 出版年：2013

摘要：Activated-carbon-supported iron oxides were prepared and used as a catalyst in an integrated ultrasound/heterogeneous Fenton process for the decolorization of Crystal Violet. A synergistic effect was observed when ultrasound was combined with the heterogeneous Fenton process. The decolorization efficiency increased with the increasing power density and catalyst dosage, but decreased with the increase of initial pH value. There exists an optimal hydrogen peroxide concentration for decolorization. Catalyst stability was evaluated by measuring iron leaching in solution. The decolorization efficiency was 88% under the optimal conditions. Toxicity test with Daphnia magna showed that the acute toxicity of dye solution decreased significantly after the treatment by the heterogeneous sono-Fenton process.

入藏号：WOS:000328740600027

文献类型：Article

语种：English

作者关键词：Crystal Violet, decolorization, heterogeneous Fenton process, ultrasound

扩展关键词：ZERO-VALENT IRON; ACID ORANGE 7; ULTRASONIC IRRADIATION; CI REACTIVE-BLACK-8; HYDROGEN-PEROXIDE; DEGRADATION; MINERALIZATION; OXIDATION; CATALYST; DECOLORISATION

通讯作者地址：Zhang, Hui; Wuhan Univ, Dept Environm Engn, Hubei Biomass Resource Chem & Environm Biotechnol, Wuhan 430079, Peoples R China.

电子邮件地址：eeng@whu.edu.cn

地址：

[Zhang, Hui;Gao, Hong; Cai, Chun; Zhang, Chunyang; Chen, Lu] Wuhan Univ, Dept Environm Engn, Hubei Biomass Resource Chem & Environm Biotechnol, Wuhan 430079, Peoples R China.

研究方向：Engineering; Environmental Sciences & Ecology; Water Resources

ISSN：0273-1223

标题：Degradation of Orange II in aqueous solution by a novel electro/Fe3O4 process

作者：Lin, Heng; Hou, Liwei; Zhang, Hui

来源出版物：WATER SCIENCE AND TECHNOLOGY 卷：68 期：11 页：2441-2447 DOI：10.2166/wst.2013.513出版年：2013

摘要：The removal of Orange II in aqueous solution by Fe3O4 enhanced anode oxidation (EC/Fe3O4 process) was performed in an electrochemical reactor. The process involved the use of a dimensionally stable anode and a stainless steel cathode. Fe3O4 was performed as particle electrodes to increase mass transfer coefficient and reduce energy consumption. Various parameters were investigated to optimize the process, including initial pH, Fe3O4 dosage and current density. The results indicated that the decolorization of Orange II followed pseudo first-order kinetics. The decolorization was favorable in acidic media than in neutral or alkaline solution, while it increased with the Fe3O4 dosage and current density. The total organic carbon (TOC) removal efficiency was 33.2% after 120 min reaction. The X-ray photoelectron spectroscopy was applied to investigate the surface properties of Fe3O4 before and after reaction.

入藏号：WOS:000328740600017

文献类型：Article

语种：English

作者关键词：anode oxidation, decolorization, Fe3O4, Orange II

扩展关键词：WASTE-WATER; ELECTROCHEMICAL TREATMENT; ELECTRODE; PHENOL

通讯作者地址：Zhang, Hui; Wuhan Univ, Dept Environm Engn, Hubei Biomass Resource Chem & Environm Biotechnol, Wuhan 430079, Peoples R China.

电子邮件地址：eeng@whu.edu.cn

地址：

[Lin, Heng; Hou, Liwei; Zhang, Hui] Wuhan Univ, Hubei Biomass Resource Chem & Environm Biotechnol, Dept Environm Engn, Wuhan 430079, Peoples R China.

研究方向：Engineering; Environmental Sciences & Ecology; Water Resources

ISSN：0273-1223