Chem. J. Chinese Universities ›› 2017, Vol. 38 ›› Issue (5): 855.doi: 10.7503/cjcu20160754

• Physical Chemistry • Previous Articles     Next Articles

Influencing Factors of 2-Naphthol Degradation in Water by Biofilm-electrode Method

WANG Xuan, CHEN Qiyuan   

  1. Inner Mongolia Autonomous Region Key Laboratory of Environmental Pollution Control and Recycling, Inner Mongolia Autonomous Region Coal Chemical Industry Wastewater Treatment and Resource Engineering Research Center, School of Ecology and Environment, Inner Mongolia University, Hohhot 010021, China
  • Received:2016-11-01 Revised:2017-04-20 Online:2017-05-10 Published:2017-04-20
  • Supported by:

    Supported by the Higher Learning Scientific Research Projects of Inner Mongolia Science and Technology Department, China(No.NJZY14017).

Abstract:

With 2-naphthol as the target contaminants, the influences of matrix material, diaphragm, temperature and current density on the degradation rate of 2-naphthol with biofilm-electrode method were studied. The results show that biofilm-electrode method has some advantages over conventional electrochemical and microbial methods for the removal of 2-naphthol pollutants, and its effect is directly related to the growth state of microorganisms. The biodegradation effect of the biofilm based on carbon felt was better than that of the titanium net-based biofilm electrode at the beginning, but the degradation performance of the Ti-based biofilm electrode was more stable after a certain period of time. Anion exchange membrane electrolyzer system is superior to cation exchange membrane electrolyzer system in the degradation of 2-naphthol. The optimal current density is 0.50 mA/cm2 at 35℃.

Key words: Biofilm electrode method, Polycyclic aromatic hydrocarbon, 2-Naphthol, Degradation efficiency, Influencing factor

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