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
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