Journal of Guangdong University of Technology ›› 2011, Vol. 28 ›› Issue (3): 18-20.

• Comprehensive Studies • Previous Articles     Next Articles

On the Degradation of PNP in Water Using a Gas Phase Surface Discharge Reactor

  

  1. 1. Institute of Electrostatic and Special Power, 2. School of Environmental Science and Technology,
    3. Key Laboratory of Industrial Ecology and Environmental Engineering of Education Ministry, Dalian University of Technology, Dalian 116024, China
  • Online:2010-10-06 Published:2010-10-06

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Abstract: The degradation of pNitrophenol (PNP) in water using a gas phase surface discharge reactor was researched. The effects of the operating parameters, such as air flow rate, oxygen content and pH value of initial solution on the degradation were discussed. The results show that the PNP degradation efficiency increases with the flow rate of the carrier gas; the optimal gas flow rate is 1.50 m 3/h under which the degradation of PNP reaches 90%; when the oxygen content is 41% in the carrier gas, the degradation efficiency of PNP achieves 99%; under alkaline conditions, about 96% of pNitrophenol is degradated, which is higher than those obtained under acid and neutral conditions; the removal of COD of PNP is about 74.5%, and the energy efficiency of the removal of COD is up to 8.86×10-3mg/J. 

Key words: gas phase surface discharge; p-Nitrophenol (PNP); degradation； COD

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