Journal of odor and indoor environment (실내환경 및 냄새 학회지)

Korean Society for Indoor Environment (한국실내환경학회)
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Characteristics of odorous VOCs removal by using electrolytic oxidant

전해 산화제에 의한 악취 원인 VOCs 제거 특성

  • Lee, Tae Ho (Convergence Research Institute, Soongsil University) ;
  • Ryu, Hee Wook (Department of Chemical Engineering, Soongsil University)
  • 이태호 (숭실대학교 융합연구원) ;
  • 류희욱 (숭실대학교 화학공학과)
  • Received : 2018.11.27
  • Accepted : 2018.12.27
  • Published : 2018.12.31
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Abstract

In this study, various conditions and phenomena that occur in the process of removing odorous VOCs by using electrolyzed oxidant were examined. The formation of hypochlorous acid, which is an oxidant produced by electrolysis, was investigated and the properties of the oxidizing agent used to decompose toluene, xylene, and cyclohexane were investigated. As a result, it was found that the production rate and the final concentration of the oxidizing agent increased with the current density. It was found that the degree of removal varies depending on the property of each pollutant. Interestingly, in the batch experiments in which the pH of the produced oxidant was controlled, it was found that the degree of elimination varied depending on the pH of the substance. These results suggest that the difference in the concentration and distribution of hypochlorous acid (HOCl) and hypochlorite ($OCl^-$) due to the pH change leads to the difference in oxidizing power on the oxidation characteristics of each substance. Styrene and terpineol showed better degradation characteristics than toluene and xylene in odorous VOC removal experiments by spraying electrolytic oxidant using a lab-scale continuous reactor. In conclusion, the removal of odorous VOCs by the electrolytic oxidant can have various applications in that it can oxidize pollutants of various spectra.

Keywords

Acknowledgement

Supported by : 환경부

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