The experiment employs dielectric barrier discharge (DBD) combined with absorption integrated reactor (DCAIR) for higher concentration ethyl acetate removal and studies the synergism of DCAIR technology and the reaction pathway of ethyl acetate. Among three technologies of DCAIR, DBD and DBD combined with absorption series reactor (DCASR), DCAIR achieved the highest removal efficiency (RE) of ethyl acetate at similar input power. Fixed gas flow rate of 1000 ml/min and cC4H8O2in of 5000 mg/m3, the average REs of DCASR and DCAIR are higher than that of DBD by 31.2 % and 34.2 %, respectively. For the efficiency compensation mechanism, one of synergies in DCAIR, RE of ethyl acetate could exceed 80 % at the input power of 15 W. Energy consumption evaluation shows when RE > 80 %, the max energy efficiency of three technologies is in the order 70.0 g/kWh (DCAIR) > 5.1 g/kWh (DCASR) > 3.0 g/kWh (DBD). Tail gas and absorbent analysis reveals DCAIR can enhance mineralizing ethyl acetate and eliminating the secondary pollutants (e.g., O3, gaseous organic intermediates, and COD, etc.) effectively, due to its special structure of reactor. According to FT-IR spectra, the degradation mechanism and reaction pathway of ethyl acetate in DCAIR has been unveiled.

中文翻译：

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揭示 DBD/吸收集成反应器中乙酸乙酯去除的协同作用和反应途径


该实验采用介电势垒放电 （DBD） 结合吸收集成反应器 （DCAIR） 去除更高浓度的乙酸乙酯，并研究了 DCAIR 技术与乙酸乙酯反应途径的协同作用。在 DCAIR、DBD 和 DBD 结合吸收式串联反应器 （DCASR） 三种技术中，DCAIR 在相似输入功率下实现了对乙酸乙酯的最高去除效率 （RE）。固定气体流速为 1000 ml/min，cC4H8O2in 为 5000 mg/m3，DCASR 和 DCAIR 的平均 REs 分别比 DBD 高 31.2 % 和 34.2 %。对于效率补偿机制，DCAIR 中的协同作用之一，乙酸乙酯的 RE 在 15 W 的输入功率下可以超过 80%。能耗评估显示，当 RE > 80% 时，三种技术的最大能效约为 70.0 g/kWh （DCAIR） > 5.1 g/kWh （DCASR） > 3.0 g/kWh （DBD）。尾气和吸收剂分析表明，由于其反应器的特殊结构，DCAIR 可以增强乙酸乙酯的矿化并有效消除二次污染物（如 O3、气态有机中间体和 COD 等）。根据 FT-IR 光谱，揭示了乙酸乙酯在 DCAIR 中的降解机理和反应途径。