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›› 2008, Vol. 8 ›› Issue (6): 1138-1142.

• 过程与工艺 • 上一篇    下一篇

含钛矿渣电化学催化降解硝基苯

薛向欣 康艳红 杨合 李维 康泽双   

  1. 东北大学材料与冶金学院 东北大学材料与冶金学院冶金资源与环境工程研究所 东北大学材料与冶金学院 东北大学材料与冶金学院 东北大学材料与冶金学院
  • 收稿日期:2008-07-07 修回日期:2008-08-25 出版日期:2008-12-20 发布日期:2008-12-20
  • 通讯作者: 薛向欣

Degradation of Nitrobenzene by Electrochemical Catalysis with Titania-containing Slags

XUE Xiang-xin TANG Yan-hong YANG He LI Wei KANG Ze-shuang   

  1. School of Materials and Metallurgy, Northeastern University Institute of Metallurgical Resources ＆ Environmental Engineering ,College of Materials and Metallurgy,Northeastern University School of Materials and Metallurgy, Northeastern University School of Materials and Metallurgy, Northeastern University School of Materials and Metallurgy, Northeastern University
  • Received:2008-07-07 Revised:2008-08-25 Online:2008-12-20 Published:2008-12-20
  • Contact: XUE Xiang-xin

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摘要： 以含钛矿渣为催化剂，采用电化学方法对含硝基苯废水进行了降解研究. 结果表明，相同条件下，催化剂的催化能力与矿渣中的钛含量正相关. 使用高钛渣催化剂，采用尺寸不变阳极(DSA)，在30 V电压下电化学降解硝基苯废水，25 min后阴阳极降解率均可达100%. 通过COD分析，阳极在30 min后有机物降解彻底，可以实现污染物零排放；随着电化学催化降解时间的延长，阴极降解产物BOD5/COD逐渐增加，20 min后具有可生化降解性.

关键词: 含钛矿渣, 电化学催化, 硝基苯, 降解, COD, BOD5

Abstract: The removal efficiency of nitrobenzene (NB) catalyzed electrochemically by the slags containing titania was investigated. The results show that catalytic ability of the slags was proportional to the content of titania in slag under the same experimental conditions. 100% of NB removal could be reached after 25 min under 30 V in dimensionally stable anode (DSA) when high-titania slag was used as catalyst. The products in anode had been completely removed after 30 min on the analysis of COD value which shows no discharge of contaminants. With the extension of reaction time, the BOD5/COD value of products in cathode increased gradually and NB aqueous solution obtained capability of biotransformation after 20 min.

Key words: titania-containing slag, electrochemical catalysis, nitrobenzene, degradation, COD, BOD5