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<p>This study presents the development and performance evaluation of a novel hybrid reactor integrating a UV-photocatalyst with dielectric barrier discharge (DBD) plasma for the abatement of volatile organic compounds (VOCs) in indoor air, with a specific focus on methyl ethyl ketone (MEK). A notable achievement was the substantial reduction of ozone-typically a major byproduct of DBD systems-through the synergistic interaction with the UV-photocatalyst. Compared to individual UV-photocatalyst or DBD plasma units, the hybrid configuration exhibited a significantly enhanced reaction rate constant across varying inlet MEK concentrations. However, Conversely, increasing the inlet gas concentration led to reductions in both CO<sub>2</sub> selectivity and the carbon balance, defined as the CO<sub>2</sub>-to-CO ratio. The application of a TiO<sub>2</sub> sol coating on the glass barrier had a minimal effect on the electrical discharge characteristics. The energy efficiency analysis based on specific energy density (SED) and energy yield raised the necessity of identifying optimal operating conditions, particularly in relation to applied voltage and gas flow rate.</p>

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Enhanced VOC Abatement in Indoor Air: Synergistic Hybrid Reactor of Low Voltage DBD Plasma/UV-Photocatalyst for MEK Decomposition

  • 期刊论文

  • 发表日期：

    2025年11月5日

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  • Jun-Ha Lee,
  • Huibom Jeong,
  • Byeonguk Kim,
  • Sang Bum Kim,
  • Young-Min Jo

摘要

This study presents the development and performance evaluation of a novel hybrid reactor integrating a UV-photocatalyst with dielectric barrier discharge (DBD) plasma for the abatement of volatile organic compounds (VOCs) in indoor air, with a specific focus on methyl ethyl ketone (MEK). A notable achievement was the substantial reduction of ozone-typically a major byproduct of DBD systems-through the synergistic interaction with the UV-photocatalyst. Compared to individual UV-photocatalyst or DBD plasma units, the hybrid configuration exhibited a significantly enhanced reaction rate constant across varying inlet MEK concentrations. However, Conversely, increasing the inlet gas concentration led to reductions in both CO2 selectivity and the carbon balance, defined as the CO2-to-CO ratio. The application of a TiO2 sol coating on the glass barrier had a minimal effect on the electrical discharge characteristics. The energy efficiency analysis based on specific energy density (SED) and energy yield raised the necessity of identifying optimal operating conditions, particularly in relation to applied voltage and gas flow rate.