Mineralization of reactive Black 5 in aqueous solution by ozone/H2O2 in the presence of a magnetic catalyst

被引：41

作者：

Chen, Hua-Wei ^{[2
]}

Kuo, Yu-Lin ^{[3
]}

Chiou, Chyow-San ^{[1
]}

You, Shih-Wei ^{[1
]}

Ma, Chih-Ming ^{[2
]}

Chang, Chang-Tang ^{[1
]}

机构：

[1] Natl Ilan Univ, Dept Environm Engn, Ilan 260, Taiwan

[2] St Marys Med Nursing & Management Coll, Dept Cosmet Applicat & Management, Ilan, Taiwan

[3] Natl Taiwan Univ Sci & Technol, Dept Mech Engn, Taipei, Taiwan

来源：

JOURNAL OF HAZARDOUS MATERIALS | 2010年 / 174卷 / 1-3期

关键词：

Mineralization; Magnetic catalyst; H2O2/O-3; Reactive Black 5; OZONATION; DEGRADATION; DECOMPOSITION; ACID; DYES;

D O I：

10.1016/j.jhazmat.2009.09.122

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Particles are often too small to be separated from a reaction system and recycled, especially in wastewater treatment via a catalytic ozonation process. Thus, the objective of this study was to prepare a magnetic catalyst (SiO2/Fe3O4) that can be recycled by using an external magnetic field. The effects of the characteristics of the magnetic catalyst, pH values, catalyst dosage, and initial concentration of Reactive Black 5 (RB5) on mineralization efficiency of the magnetic catalyst/H2O2/O-3 process were also investigated. The mineralization efficiency of RB5 under various conditions followed the sequence: SiO2/Fe3O4/H2O2/O-3 > SiO2/Fe3O4/O-3 > Fe3O4/O-3 approximate to H2O2/O-3 > O-3 > SiO2/Fe3O4/H2O2. Given the results of our reuse and recovery experiments, the magnetic catalyst shows considerable promise for use in water treatment. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：795 / 800

页数：6

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