标题：Copper-spent activated carbon as a heterogeneous peroxydisulfate catalyst for the degradation of Acid Orange 7 in an electrochemical reactor作者：Li, Jing; Lin, Heng; Yang, Lin; Zhang, Hui

来源出版物：WATER SCIENCE AND TECHNOLOGY卷：73 期：8 页码：1802-1808 DOI: 10.2166/wst.2016.027 出版年：APR 2016

摘要：The exhausted activated carbon generated from the adsorption of heavy metal wastewater needs further treatment/disposal. In this study, a new application of copper-spent activated carbon (Cu-AC) was proposed. Cu-AC was used to activate peroxydisulfate (PDS) for the decolorization of Acid Orange 7 (AO7) and electrical current was introduced to enhance the process. The decolorization followed a pseudo-first-order kinetic pattern well (R-2 > 0.95). 92.4% of color removal at 60 min and 38.3% of total organic carbon removal at 180 min were achieved when initial pH value was 9.0, current density was 16 mA/cm2, PDS concentration was 5 mM and Cu-AC dosage was 0.25 g/L. The radical scavengers including methanol, tert-butanol and phenol, as well as electron paramagnetic resonance test, were employed to investigate the oxidizing species responsible for AO7 decolorization. The stability of Cu-AC was confirmed by three recycle experiments.

入藏号：WOS:000374979500005

文献类型：Article

语种：English

作者关键词：Acid Orange 7, copper, electrochemical, peroxydisulfate, spent activated carbon

扩展关键词：AQUEOUS-SOLUTION; ULTRASONIC IRRADIATION; FE-CO/SBA-15 CATALYST; OXIDATIVE-DEGRADATION; PERSULFATE; WATER; PEROXYMONOSULFATE; RADICALS

通讯作者地址：

Zhang, H, Wuhan Univ, Dept Environm Engn, Wuhan 430079, Peoples R China.

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

电子邮件地址：eeng@whu.edu.cn

地址：

[Li, Jing; Lin, Heng; Yang, Lin; Zhang, Hui] Wuhan Univ, Dept Environm Engn, Wuhan 430079, Peoples R China.

[Li, Jing; Lin, Heng; Zhang, Hui] Wuhan Univ, Shenzhen Res Inst, Shenzhen 518057, Peoples R China.

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

ISSN：0273-1223

eISSN: 1996-9732

影响因子（2014）：1.106