Development and characterization of a wire-plate air bubbling plasma for wastewater treatment using nanosecond pulsed high voltage
Development and characterization of a wire-plate air bubbling plasma for wastewater treatment using nanosecond pulsed high voltage
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DOI：
10.1063/1.5037107
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发表时间：
2018-08
影响因子：
3.2
通讯作者：
A. Abdelaziz;T. Ishijima;C. Tizaoui
中科院分区：
文献类型：
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作者：
A. Abdelaziz;T. Ishijima;C. Tizaoui
本研究开发了一种线-板空气鼓泡等离子体反应器的原型，可以很容易地放大用于废水处理。在不同的操作参数和溶液电导率下，研究了所开发的反应器的电特性，包括放电电流和平均功耗。反应器的性能进行了检查的基础上的能量效率和亚甲基蓝（MB）脱色效率。此外，总有机碳的去除和溶液的物理化学性质，包括pH值，电导率和温度的变化，进行了评价。电流放电和平均功耗的分析表明，该反应器的放电模式是一个连续的流光。有趣的是，溶液的电导率没有影响的平均功率消耗在低施加电压，由于限制在一个小的区域周围的放电电极在气相中的放电。而在较高电压下，电导率对平均功耗的影响较为显著，但对相同平均功耗下的脱色效率没有影响。本反应器在30 mg/l MB溶液的50%脱色时显示出42 g/kWh的高能量效率值，但在97%脱色时其下降到14 g/kWh。一级动力学模型较好地描述了脱色反应速率和总速率常数与平均功率的线性关系。本研究开发了一种易于放大的线板式空气鼓泡等离子体反应器。在不同的操作参数和溶液电导率下，研究了所开发的反应器的电特性，包括放电电流和平均功耗。反应器的性能进行了检查的基础上的能量效率和亚甲基蓝（MB）脱色效率。此外，总有机碳的去除和溶液的物理化学性质，包括pH值，电导率和温度的变化，进行了评价。电流放电和平均功耗的分析表明，该反应器的放电模式是一个连续的流光。有趣的是，溶液的电导率没有影响的平均功率消耗在低施加电压，由于限制在一个小的区域周围的放电电极在气相中的放电。然而，相对于H…
This study developed a prototype of a wire-plate air bubbling plasma reactor that can be easily scaled up for wastewater treatment. The electrical characteristics, including the discharge current and average power consumed, of the developed reactor were deeply investigated at different operating parameters and solution conductivities. The performance of the reactor was examined on the basis of energy efficiency and methylene blue (MB) decoloration efficiency. Moreover, the removal of the total organic carbon and the changes of the physicochemical properties of solution, including pH, conductivity, and temperature, were evaluated. The analysis of current discharge and average power consumed showed that the discharge mode in the present reactor is a filamentary streamer. Interestingly, the solution conductivity had no effect on the average power consumed at low applied voltages, due to confinement of the discharge in a small area surrounding the discharge electrode in the gas phase. However, at relatively high voltages, the effect of conductivity on the average power consumed was noticeable, yet it had no effect on the decoloration efficiency at the same average power. The present reactor showed a high energy-efficiency value of 42 g/kWh at 50% decoloration of 30 mg/l MB solution, but it dropped to 14 g/kWh at 97% decoloration. A first-order kinetics model described well the decoloration reaction rates and the overall rate constant correlated linearly to the average power.This study developed a prototype of a wire-plate air bubbling plasma reactor that can be easily scaled up for wastewater treatment. The electrical characteristics, including the discharge current and average power consumed, of the developed reactor were deeply investigated at different operating parameters and solution conductivities. The performance of the reactor was examined on the basis of energy efficiency and methylene blue (MB) decoloration efficiency. Moreover, the removal of the total organic carbon and the changes of the physicochemical properties of solution, including pH, conductivity, and temperature, were evaluated. The analysis of current discharge and average power consumed showed that the discharge mode in the present reactor is a filamentary streamer. Interestingly, the solution conductivity had no effect on the average power consumed at low applied voltages, due to confinement of the discharge in a small area surrounding the discharge electrode in the gas phase. However, at relatively h...