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Wu Jingang, Dai Youzhi, Guo Lili, Wang Guizhi, Li Xiaona. Effect of pH values on process for removal of 2,4,6-trichlorophenol by Fe0-anaerobic microbe system[J]. Chinese Journal of Environmental Engineering, 2013, 7(4): 1273-1278.
Citation: Wu Jingang, Dai Youzhi, Guo Lili, Wang Guizhi, Li Xiaona. Effect of pH values on process for removal of 2,4,6-trichlorophenol by Fe0-anaerobic microbe system[J]. Chinese Journal of Environmental Engineering, 2013, 7(4): 1273-1278.
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Effect of pH values on process for removal of 2,4,6-trichlorophenol by Fe0-anaerobic microbe system

  • 1.

    Department of Environmental Science and Engineering, School of Chemical Engineering, Xiangtan University, Xiangtan 411105, China

  • Received Date: 17/05/2012
    Accepted Date: 09/02/2012
    Available Online: 09/04/2013
    Fund Project:
  • The effect of pH value on the degradation effect of 2,4,6-trichlorophenol (2,4,6-TCP) by "Fe0-anaerobic microbe" system was observed and studied, and results show that pH value is an important parameter for removing 2,4,6-TCP by "Fe0-anaerobic microbe" system. Initial pH value directly affects microorganism activity and iron corrosion, and then affects the change of pH value in the process, which, in turn, influences microorganism activity and iron corrosion. The optimal range of pH value for anaerobic microorganism growth is 7.0~9.0. Fe0 and microorganism have a synergistic promoting effect on the reductive dechlorination of 2,4,6-TCP. The mechanism of the synergy shows in three aspects: Fe0 and microbial play complementary role to regulate the pH value to neutral range which is suitable for microbial growth; Fe2+ and H2 produced by the corrosion of Fe0 serves as electron donor and nutrient substance for microbial metabolism, thus promoting the transformation of 2,4,6-TCP; Fe0 corrosion makes chlorinated organics degraded by reductive dechlorination directly, and microbial promotes the corrosion.
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Effect of pH values on process for removal of 2,4,6-trichlorophenol by Fe0-anaerobic microbe system

  • Received Date: 17/05/2012
  • Accepted Date: 09/02/2012
  • Available Online: 09/04/2013
Fund Project:

Abstract: The effect of pH value on the degradation effect of 2,4,6-trichlorophenol (2,4,6-TCP) by "Fe0-anaerobic microbe" system was observed and studied, and results show that pH value is an important parameter for removing 2,4,6-TCP by "Fe0-anaerobic microbe" system. Initial pH value directly affects microorganism activity and iron corrosion, and then affects the change of pH value in the process, which, in turn, influences microorganism activity and iron corrosion. The optimal range of pH value for anaerobic microorganism growth is 7.0~9.0. Fe0 and microorganism have a synergistic promoting effect on the reductive dechlorination of 2,4,6-TCP. The mechanism of the synergy shows in three aspects: Fe0 and microbial play complementary role to regulate the pH value to neutral range which is suitable for microbial growth; Fe2+ and H2 produced by the corrosion of Fe0 serves as electron donor and nutrient substance for microbial metabolism, thus promoting the transformation of 2,4,6-TCP; Fe0 corrosion makes chlorinated organics degraded by reductive dechlorination directly, and microbial promotes the corrosion.

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