华南理工大学学报(自然科学版) ›› 2012, Vol. 40 ›› Issue (2): 149-155.

• 环境科学与技术 • 上一篇    下一篇

活性炭、氧化铝及其负载二氧化钛催化臭氧处理制浆废水

雷利荣1,2 李友明1,2 马黎明1   

  1. 1.华南理工大学 制浆造纸工程国家重点实验室,广东 广州 510640; 2.华南理工大学 造纸与污染控制国家工程研究中心,广东 广州 510640
  • 收稿日期:2011-10-14 修回日期:2011-12-03 出版日期:2012-02-25 发布日期:2012-01-04
  • 通信作者: 雷利荣(1975-) ,男,博士生,讲师,主要从事制浆清洁生产与污染控制研究. E-mail:lrlei@scut.edu.cn
  • 作者简介:雷利荣(1975-) ,男,博士生,讲师,主要从事制浆清洁生产与污染控制研究.
  • 基金资助:

    国家水体污染控制与治理科技重大专项( 2009ZX07529-002) ; 国家自然科学基金资助项目( 20776055,20977033)

Pulping Effluent Treatment with Ozone Catalyzed by Activated Carbon and Alumina Loaded or Unloaded with Titanium Dioxide

Lei Li-rong1,2  Li You-ming1,2  Ma Li-ming1   

  1. 1.State Key Laboratory of Pulp and Paper Engineering,South China University of Technology,Guangzhou 510640,Guangdong,China; 2.National Engineering Research Center of Papermaking and Pollution Control,South China University of Technology,Guangzhou 510640,Guangdong,China
  • Received:2011-10-14 Revised:2011-12-03 Online:2012-02-25 Published:2012-01-04
  • Contact: 雷利荣(1975-) ,男,博士生,讲师,主要从事制浆清洁生产与污染控制研究. E-mail:lrlei@scut.edu.cn
  • About author:雷利荣(1975-) ,男,博士生,讲师,主要从事制浆清洁生产与污染控制研究.
  • Supported by:

    国家水体污染控制与治理科技重大专项( 2009ZX07529-002) ; 国家自然科学基金资助项目( 20776055,20977033)

摘要: 为提高臭氧处理制浆废水的效果,分别以活性炭( AC) 、氧化铝( Al2O3 ) 和溶胶-凝胶法制备的TiO2 /AC、TiO2 /Al2O3 为催化剂催化臭氧处理制浆废水,采用扫描电镜和X-射线衍射仪对催化剂进行表征. 结果表明: AC、A Al2O3 、TiO2 /AC 和TiO2 /Al2O3 均具有催化性能,可有效提高臭氧对制浆废水化学需氧量( CODCr ) 和色度的去除效果. 动力学分析表明,AC、TiO2 /AC、Al2O3 和TiO2 /Al2O3 催化臭氧处理制浆废水的过程中,CODCr 降解的反应符合表观二级动力学方程,负载的TiO2 提高了反应的动力学速率常数. 气相色谱-质谱联用分析表明,臭氧及催化臭氧处理能有效降解去除漂白废水中的烷基苯类、酯类和氯代烃类等有毒有机污染物.

关键词: 制浆废水, 臭氧, 催化, 活性炭, 氧化铝, 二氧化钛

Abstract:

In order to improve the treatment efficiency of pulping effluent with ozone,activated carbon ( AC) ,alumina and their compounds TiO2 /AC and TiO2 /Al2O3 prepared via the sol-gel method were respectively used as catalysts to enhance the treatment,and the catalysts were characterized by means of SEM and XRD. The results indicate that the four kinds of catalysts all possess catalytic ability and effectively improve the removals of chemical oxygen demand ( CODCr ) and chroma of the effluent. Kinetics analysis shows that,with the catalysis of the four kinds of catalysts,the CODCr degradation process follows the apparent second-order kinetic equation; and that the TiO2 loaded on AC or Al2O3 helps to improve the reaction rate constant. Moreover,GC-MS results indicate that both the ozonation and the catalytic ozonation are effective in degrading the toxic organic compounds in the effluent such as alkyl benzenes,esters and chlorinated hydrocarbons.

Key words: pulping effluent, ozone, catalysis, activated carbon, alumina, titanium dioxide

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