Adsorption of SO2 and chlorobenzene on activated carbon

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• 作者：Yangyang Guo (1) (2)
  Yuran Li (1)
  Tingyu Zhu (1)
  Meng Ye (1)
  Xue Wang (1)
  
• 关键词：Activated carbon ; VOCs ; Chlorobenzene ; SO2 ; Co ; adsorption
• 刊名：Adsorption
• 出版年：2013
• 出版时间：December 2013
• 年：2013
• 卷：19
• 期：6
• 页码：1109-1116
• 全文大小：
• 作者单位：Yangyang Guo (1) (2)
  Yuran Li (1)
  Tingyu Zhu (1)
  Meng Ye (1)
  Xue Wang (1)
  
  1. Research Center for Process Pollution Control, National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, China
  2. Graduate University of Chinese Academy of Sciences, Beijing, 100049, China
  
• ISSN：1572-8757

文摘

Activated carbon is very effective for simultaneous removal of multiple pollutants. The adsorption of SO2 and chlorobenzene modeling of VOCs on activated carbon was investigated in a fixed-bed reactor by four kinds of activated carbon. The results show that the SO2 adsorption is affected by the BET surface and basic functional groups as C=O and C groups of the carbon, while the chlorobenzene adsorption is strongly affected by the carbon pore structure, with the micropore volume deciding the adsorption amount and larger pores increasing the adsorption rate. The chlorobenzene adsorption is little affected by the chemical properties of activated carbon as the O/C ratio detected by XPS. The effect of SO2 on the chlorobenzene adsorption was investigated, with the results showing the SO2 seriously restricts the individual chlorobenzene adsorption and this effect becomes smaller in the presence of O2. The adsorption products were analyzed by TPD-MS and the initial decomposition temperatures are 380K for chlorobenzene and 500K for SO2, showing that SO2 is much more stable adsorbed than chlorobenzene. The changes of the carbon functional groups that the CO2 desorption peak emerges at 700K and decreases at 1000K with the chlorobenzene adsorption, were observed by TPD-MS, indicating that the lactone and quinone groups on the carbon are likely to combine with the chlorobenzene and form weakly chemisorbed chlorobenzene.