标题：Electro-assisted heterogeneous activation of persulfate by Fe/SBA-15 for the degradation of Orange II作者：Cai, Chun; Zhang, Zhuoyue; Zhang, Hui

来源出版物：JOURNAL OF HAZARDOUS MATERIALS 卷：313 页码：209-218 DOI: 10.1016/j.jhazmat.2016.04.007 出版年：AUG 5 2016

摘要：The removal of Orange II by activation of persulfate (S2O82-, PS) using synthesized Fe/SBA-15 in the electrochemical (EC) enhanced process was reported in this study. The reaction rate constants, degradation mechanism, catalyst stability, and evolution of mineralization and toxicity were detailed investigated. On the basis of radical scavenger results, both the sulfate radicals (SO4-center dot) and hydroxyl radicals ((OH)-O-center dot) were responsible for the degradation of Orange II. A possible pathway is suggested to describe the degradation of Orange II according to the degradation intermediates identified. The results showed that the Fe/SBA-15 catalyst maintained strong reusability and stability with a low level of iron leaching. In addition, favorable mineralization efficiency in terms of COD removal efficiency (75.4%) and TOC removal efficiency (46.3%) was obtained when the reaction time was prolonged to 24 h. The toxicity experiments implied that the toxicity of the treated solution ascended at the first 30 min but then dropped to almost zero eventually. This study provides a proof-of-concept that can be applied widely for the PS remediation of contaminated water.

入藏号：WOS:000376811000023

文献类型：Article

语种：English

作者关键词：Electrochemical, Sulfate radicals, Fe/SBA-15, Toxicity, Persulfate

扩展关键词：ZERO-VALENT IRON; AQUEOUS-SOLUTION; AZO-DYE; OXIDATIVE-DEGRADATION; LANDFILL LEACHATE; ELECTRO/FE2+/PEROXYDISULFATE PROCESS; PHOTOCATALYTIC DEGRADATION; FE-CO/SBA-15 CATALYST; ORGANIC POLLUTANTS; AROMATIC-COMPOUNDS

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

Wuhan Univ, Shenzhen Res Inst, Shenzhen 518057, Peoples R China.

电子邮件地址：eeng@whu.edu.cn

地址：

[Cai, Chun; Zhang, Zhuoyue; Zhang, Hui] Wuhan Univ, Dept Environm Engn, Wuhan 430079, Peoples R China.

[Cai, Chun; Zhang, Hui] Wuhan Univ, Shenzhen Res Inst, Shenzhen 518057, Peoples R China.

研究方向：Engineering; Environmental Sciences & Ecology

ISSN：0304-3894

eISSN: 1873-3336

影响因子：4.836