Journal of Environmental Science International (한국환경과학회지)

The Korean Environmental Sciences Society (한국환경과학회)
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A Study on Oxidative Degradation of Chlorophenols by Heat Activated Persulfate

열적활성화된 과황산에 의한 염화페놀의 산화분해특성 연구

  • Son, JiMin (Department of Environmental Engineering, Andong National University) ;
  • Kwon, Hee-Won (Department of Environmental Engineering, Andong National University) ;
  • Hwang, Inseong (Department of Civil and Environmental Engineering, Pusan National University) ;
  • Kim, Jeong-Jin (Department of Earth and Environmental Sciences, Andong National University) ;
  • Kim, Young-Hun (Department of Environmental Engineering, Andong National University)
  • 손지민 (안동대학교 환경공학과) ;
  • 권희원 (안동대학교 환경공학과) ;
  • 황인성 (부산대학교 토목환경공학과) ;
  • 김정진 (안동대학교 지구환경과학과) ;
  • 김영훈 (안동대학교 환경공학과)
  • Received : 2019.11.14
  • Accepted : 2019.12.04
  • Published : 2020.01.31
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Abstract

Oxidative degradation of phenol, three monochlorophenols (2-chlorophenol, 2-CP; 3-chlorophenol, 3-CP; 4-chlorophenol, 4-CP), four dichlorophenols (2,3-dichlorophenol, 2,3-DCP; 2,4-dichlorophenol, 2,4-DCP; 2,5-dichlorophenol, 2,5-DCP; 2,6-dichlorophenol, 2,6-DCP), and two trichlorophenols (2,4,5-trichlorophenol, 2,4,5-TCP; 2,4,6-trichlorophenol, 2,4,6-TCP) was conducted with heat activated persulfate. As the number of chlorinations increased, the reaction rate also increased. The reaction rate was relatively well fitted to the zero-order kinetic model, rather than the pseudo-first order kinetic model for the reactions at 60 ℃, which can be explained by insufficient activation of the persulfate at 60 ℃, and the oxidation reaction of 2,4,6-TCP at 70 ℃ was relatively well fitted to the pseudo-first order kinetic model. The oxidation reaction rate generally increased with increase of persulfate concentration in the solution. 2,6-dichloro-2,5-cyclohexadiene-1,4-dione was found as a degradation product in a GC/MS analysis. This compound is a non-aromatic compound, and one chlorine was removed. This result is similar to the result of previous studies. The current study proved that heat activated persulfate activation could be an alternative remediation technology for phenol and chlorophenols in soil and groundwater.

Keywords

References

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