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Energy efficient treatment of indoor volatile organic compounds using a serial dielectric barrier discharge reactor
Process Safety and Environmental Protection ( IF 7.8 ) Pub Date : 2021-07-06 , DOI: 10.1016/j.psep.2021.07.009
Ji Hun Bang 1 , Christian Ariane Santos 1 , Young Min Jo 1
Affiliation  

Volatile organic compounds (VOCs) generated in urban workplaces have been considered as significant air pollutants both indoors and outdoors. In order to reduce those harmful VOCs from urban emission sources, a non-thermal plasma reactor equipped with dielectric barrier discharge (DBD) using alternating current (AC) was investigated with a focus on process design including recirculation. Decomposition efficiency of low concentration VOCs was evaluated in terms of energy yield and conversion selectivity. At 20 ppm, the highest decomposition efficiency (97.3 %) was achieved in the treatment of n-hexane, followed by toluene at 96.6 %, MEK at 91.5 % and acetaldehyde at 90.4 %. A recirculation rate (QR) of 50 % improved the system efficiency, particularly for acetaldehyde (49.47 %–63.86 %) and toluene (79.05 %–95.89 %). It also increased the complete energy yield and the selectivity for carbon monoxide (CO) and carbon dioxide (CO2). By-product ozone concentration decreased significantly with increasing recirculation rate at the same input energy level.



中文翻译:

使用串联介质阻挡放电反应器节能处理室内挥发性有机化合物

城市工作场所产生的挥发性有机化合物 (VOC) 被认为是室内和室外的重要空气污染物。为了减少来自城市排放源的有害 VOC,研究了配备使用交流电 (AC) 的介质阻挡放电 (DBD) 的非热等离子体反应器,重点是包括再循环在内的工艺设计。从能量产率和转化选择性方面评估低浓度 VOC 的分解效率。在 20 ppm 时,在正己烷处理中实现了最高分解效率 (97.3 %),其次是甲苯 96.6 %、MEK 91.5 % 和乙醛 90.4 %。再循环率 (Q R) 50 % 提高了系统效率,特别是对于乙醛 (49.47 %–63.86 %) 和甲苯 (79.05 %–95.89 %)。它还增加了完整的能量产率和一氧化碳 (CO) 和二氧化碳 (CO 2 )的选择性。在相同输入能量水平下,副产品臭氧浓度随着再循环率的增加而显着降低。

更新日期:2021-07-12
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