Gas-phase isopropanol degradation by nonthermal plasma combined with Mn-Cu/-Al 2 O 3
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PHYSICAL, CHEMICAL AND BIOLOGICAL PROCESS TECHNIQUES AND TOOLS FOR POLLUTION PREVENTION AND SUSTAINABILITY
Gas-phase isopropanol degradation by nonthermal plasma combined with Mn-Cu/-Al2O3 Ken-Lin Chang 1,2 & Yu-Chieh Lin 1 & Ming-Ze Qiu 1 & Chun-Wei Tu 3 & Chih-Ping Chang 3 & Jhong-Lin Wu 3 & Yung-Chang Lin 4,5,6 & Chien-Kuei Chang 7 Received: 8 April 2020 / Accepted: 2 September 2020 # Springer-Verlag GmbH Germany, part of Springer Nature 2020
Abstract In this study, the dielectric barrier discharge (DBD) induced by nonthermal plasma (NTP) technology was used for isopropanol (IPA) degradation. IPA, intermediate, final product, and ozone concentrations were analyzed using GC-MS, carbon dioxide detector, and ozone detector. The experimental flow rate and concentration were fixed to 1 L/min and 1200 ppm ± 10%, respectively. Different reaction procedures were proposed for self-made metal catalyst combined with a plasma system (plasma alone and γ-Al2O3 combined with plasma, Cu (5 wt%)/γ-Al2O3 combined with plasma, Mn (3 wt%)-Cu (5 wt%)/γ-Al2O3 combined with plasma). In addition, the effect of the carrier gas oxygen content (0%, 20%, and 100%) on IPA conversion and intermediate and carbon dioxide selectivity was also investigated. The results revealed that the Mn (F)-Cu/γ-Al2O3 combined with plasma exhibited more efficient IPA conversion. In the 100% oxygen environment, the IPA conversion rate increased from 79.32 to 99.99%, and carbon dioxide selectivity increased from 3.82 to 50.23%. IPA was completely converted after 60 min of plasma treatment with the acetone selectivity, carbon dioxide selectivity, and tail ozone concentration of 26.71% ± 1.27%, 50.23% ± 0.56%, and 1761 ± 11 ppm, respectively. This study proved that the current single planar DBD configuration is an effective advanced treatment technology for the decomposition of VOCs. Keywords Volatile organic compound . Dielectric barrier discharge . Isopropyl alcohol . Metal catalyst
Introduction Responsible Editor: Vítor Pais Vilar * Chien-Kuei Chang [email protected] 1
Institute of Environmental Engineering, National Sun Yat-Sen University, Kaohsiung, Taiwan
2
Department of Public Health, College of Health Sciences, Kaohsiung Medical University, Kaohsiung, Taiwan
3
Environmental Resource and Management Research Center, National Cheng Kung University, Tainan, Taiwan
4
Department of Electrical Engineering, Cheng Shiu University, Kaohsiung, Taiwan
5
Department of Electrical Engineering, Cheng Shiu University, Kaohsiung, Taiwan
6
Center for environmental Toxin and Emerging Contaminant Research, Cheng Shiu University, Kaohsiung, Taiwan
7
Department of Chemical and Materials Engineering, National Kaohsiung University of Science and Technology, Kaohsiung, Taiwan
In Taiwan, the high-tech industry, including photovoltaic and semiconductor industries, is a leading industry; its development is actively supported by Taiwan government. In the photovoltaic and semiconductor industries, during the manufacturing processes, organic solvents are often added fo
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