Journal of South China University of Technology(Natural Science Edition) ›› 2012, Vol. 40 ›› Issue (2): 149-155.

Previous Articles     Next Articles

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)

PDF

834

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

CLC Number: