ELECTROCOAGULATION-TiO2 PHOTO-ASSISTED COMBINED SYSTEM APPLIED TO METHYL ORANGE WASTEWATER REMOVAL

被引：5

作者：

Zhang, Yi ^{[1
]}

Cong, Yan-qing ^{[1
]}

Wang, Qi ^{[1
]}

机构：

[1] Zhejiang Gongshang Univ, Sch Environm Sci & Engn, Hangzhou 310012, Zhejiang, Peoples R China

来源：

ENVIRONMENTAL ENGINEERING AND MANAGEMENT JOURNAL | 2013年 / 12卷 / 03期

基金：

中国国家自然科学基金;

关键词：

decolorization; electrocoagulation; methyl orange; photocatalysis; PHOTOCATALYTIC DEGRADATION; TIO2; SUSPENSIONS; AQUEOUS-SOLUTION; DECOLORIZATION; DYE; PHENOL; OXIDATION; EFFICIENT; UV/TIO2; OZONE;

D O I：

10.30638/eemj.2013.064

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Combined electrocoagulation (EC) and homogeneous phase TiO2 photo-assisted system were applied to methyl orange (MO) wastewater treatment. Optimum including current density, initial concentration of MO, TiO2 concentration, pH, solution conductivity and electrode distance were investigated. 98% decolorization (initial concentration = 500 mg/L) was achieved in 30 min with a current density of 125 A/m(2), electrode distance of 2.5 cm, electrolyte KCl concentration of 0.5 g/L, initial pH of 6.86, and TiO2 concentration of 100 mg/L. Compared with individual EC and TiO2/UV systems, the combined treatment system of EC-TiO2/UV enhanced the MO decoloration efficiency (80% removal in 20 min). The energy consumption of EC-TiO2/UV process for MO removal was about 214 kWh/(kgdye). In this paper, the EC-UV/TiO2 combined system has been proved to be an efficient technology for MO containing wastewater treatment.

引用

页码：517 / 526

页数：10

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