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Electrolytic Oxidation of 1,8-Diazabicyclo[5.4.0]undec-7-ene in Hot-Compressed Water on a Titanium Electrode
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2020-10-14 , DOI: 10.1021/acs.iecr.0c02562 Ceren Orak 1 , Aslı Yüksel Özşen 1, 2
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2020-10-14 , DOI: 10.1021/acs.iecr.0c02562 Ceren Orak 1 , Aslı Yüksel Özşen 1, 2
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The nitrogen-containing heterocyclic organic compound, 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU), was chosen to prepare a model solution to represent nitrogen-containing industrial waste streams. A hybrid reactor system was designed to combine electrolysis with wet oxidation in hot compressed water using a titanium electrode. The effects of current density, NaOH concentration, and reaction time on DBU and total organic carbon (TOC) removal were investigated via Minitab 18 software to clarify the main and interaction effects. Statistical analysis shows that the NaOH concentration and current density had significant effects on DBU removal. The highest DBU (91.2%) and TOC (45%) removal was observed at the lowest DBU concentration (3 mM) for 90 min of reaction time. Last, the effect of temperature on DBU and TOC removal was investigated. TOC removal was described with the first-order reaction kinetic model. Rate constants were determined as 0.0025, 0.041, and 0.050 min–1 at 200, 240, and 280 °C, respectively. The activation energy was calculated as 79.86 kJ/mol.
中文翻译：
钛电极上热压水中1,8-二氮杂双环[5.4.0]十一碳-7-烯的电解氧化
选择含氮杂环有机化合物1,8-二氮杂双环[5.4.0]十一碳-7-烯（DBU）来制备代表含氮工业废水的模型溶液。设计了混合反应器系统，以使用钛电极在热压缩水中将电解与湿式氧化相结合。通过Minitab 18软件研究了电流密度，NaOH浓度和反应时间对DBU和总有机碳（TOC）去除的影响，以阐明主要作用和相互作用。统计分析表明，NaOH浓度和电流密度对DBU的去除有显着影响。在90分钟的反应时间内，在最低DBU浓度（3 mM）下观察到最高的DBU（91.2％）和TOC（45％）去除率。最后，研究了温度对DBU和TOC去除的影响。用一阶反应动力学模型描述了TOC的去除。速率常数确定为0.0025、0.041和0.050分钟在200、240和280°C时分别为–1。活化能经计算为79.86 kJ / mol。
更新日期：2020-10-29
中文翻译：
钛电极上热压水中1,8-二氮杂双环[5.4.0]十一碳-7-烯的电解氧化
选择含氮杂环有机化合物1,8-二氮杂双环[5.4.0]十一碳-7-烯（DBU）来制备代表含氮工业废水的模型溶液。设计了混合反应器系统，以使用钛电极在热压缩水中将电解与湿式氧化相结合。通过Minitab 18软件研究了电流密度，NaOH浓度和反应时间对DBU和总有机碳（TOC）去除的影响，以阐明主要作用和相互作用。统计分析表明，NaOH浓度和电流密度对DBU的去除有显着影响。在90分钟的反应时间内，在最低DBU浓度（3 mM）下观察到最高的DBU（91.2％）和TOC（45％）去除率。最后，研究了温度对DBU和TOC去除的影响。用一阶反应动力学模型描述了TOC的去除。速率常数确定为0.0025、0.041和0.050分钟在200、240和280°C时分别为–1。活化能经计算为79.86 kJ / mol。
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