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Catalysts 2018, 8(9), 389; https://doi.org/10.3390/catal8090389

A Hybrid Reactor System Comprised of Non-Thermal Plasma and Mn/Natural Zeolite for the Removal of Acetaldehyde from Food Waste

1
School of Environmental Engineering, University of Seoul, Seoul 02504, Korea
2
Department of Environmental Engineering, Sunchon National University, Suncheon 57922, Korea
3
Department of Civil and Environmental Engineering, Sejong University, Seoul 05006, Korea
4
Research Laboratory for Multifunctional Carbon Materials, Korea Institute of Carbon Convergence Technology, Jeonju 54853, Korea
These authors contributed equally to this work.
*
Author to whom correspondence should be addressed.
Received: 3 August 2018 / Revised: 30 August 2018 / Accepted: 8 September 2018 / Published: 10 September 2018
(This article belongs to the Special Issue Synthesis and Application of Zeolite Catalysts)
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Abstract

The degradation of low concentrations of acetaldehyde while using a non-thermal plasma (NTP)/catalyst hybrid reactor system was investigated while using humidified air at ambient temperature. A series of highly active manganese-impregnated natural zeolite (Mn/NZ) catalysts were synthesized by the incipient wetness method using sonication. The Mn/NZ catalysts were analyzed by Brunauer-Emmett-Teller surface area measurements and X-ray photoelectron spectroscopy. The Mn/NZ catalyst located at the downstream of a dc corona was used for the decomposition of ozone and acetaldehyde. The decomposition efficiency of ozone and acetaldehyde was increased significantly using the Mn/NZ catalyst with NTP. Among the various types of Mn/NZ catalysts with different Mn contents, the 10 wt.% Mn/NZ catalyst under the NTP resulted the highest ozone and acetaldehyde removal efficiency, almost 100% within 5 min. Moreover, this high efficiency was maintained for 15 h. The main reason for the high catalytic activity and stability was attributed to the high dispersion of Mn on the NZ made by the appropriate impregnation method using sonication. This system is expected to be efficient to decompose a wide range of volatile organic compounds with low concentrations. View Full-Text
Keywords: non-thermal plasma/catalyst hybrid reactor system; manganese-impregnated natural zeolite; acetaldehyde; odor from food waste non-thermal plasma/catalyst hybrid reactor system; manganese-impregnated natural zeolite; acetaldehyde; odor from food waste
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Song, M.Y.; Ryu, H.W.; Jung, S.-C.; Song, J.; Kim, B.-J.; Park, Y.-K. A Hybrid Reactor System Comprised of Non-Thermal Plasma and Mn/Natural Zeolite for the Removal of Acetaldehyde from Food Waste. Catalysts 2018, 8, 389.

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