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Atmospheric air plasma corona discharge for dye degradation of indonesian batik wastewater
Indian Journal of Physics ( IF 2 ) Pub Date : 2021-04-02 , DOI: 10.1007/s12648-021-02082-5
K. Kusumandari , T. E. Saraswati , S. W. Wulandari , A. Qusnudin

Plasma technology is promising method in wastewater management. In the present work, plasma corona discharge was used to degrade batik wastewater that contained synthetic dyes such as naphthol and procion. The plasma corona discharge was generated by a high voltage alternating current of 3.07–11.5 kV through a pair of stainless-steel electrodes with a tip radius of 2 ± 0.5 mm. The electrodes were separated by 2 ± 0.05 cm and placed 3 ± 0.05 cm above the wastewater. UV–Vis spectra of the wastewater, monitored at different intervals of plasma treatment, were used to quantify the degradation of wastewater. We found that the degradation efficiency of wastewater reached 55% after 40 min of plasma treatment. Species generated during the discharge (e.g., O3, OH+, N2O+, and NO) were observed using an optical emission spectrometer. These species continued to dissolve in the liquid phase and reacted to molecules of wastewater. FTIR spectra revealed that the main functional group in the wastewater was O–H. This band showed a reduced intensity with plasma treatment time due to oxidative damage caused by the attack of reactive oxygen on the outer hydrogen bonds of wastewater. Other properties, such as color, pH, temperature, conductivity, total dissolved solids, and dissolved oxygen, changed due to the production of active species during plasma treatment. The findings of this study present plasma treatment as a prospective method for wastewater treatment.



中文翻译:

大气等离子体电晕放电用于印尼蜡染废水的染料降解

等离子体技术是废水管理中很有前途的方法。在目前的工作中,等离子体电晕放电用于降解包含合成染料(例如萘酚和procion)的蜡染废水。等离子体电晕放电是由3.07–11.5 kV的高压交流电通过一对尖端半径为2±0.5 mm的不锈钢电极产生的。电极分开2±0.05厘米,并放置在废水上方3±0.05厘米。在等离子处理的不同间隔进行监测的废水的UV-Vis光谱用于量化废水的降解。我们发现等离子处理40分钟后,废水的降解效率达到了55%。放电过程中产生的物种(例如,O 3,OH +,N 2使用光发射光谱仪观察到O +和NO)。这些物质继续溶解在液相中并与废水分子发生反应。FTIR光谱表明,废水中的主要官能团为O–H。由于反应性氧对废水的外部氢键的攻击所引起的氧化损伤,该带显示出随着等离子体处理时间而降低的强度。其他属性,例如颜色,pH,温度,电导率,总溶解固体和溶解氧,由于在等离子体处理过程中产生了活性物质而发生了变化。这项研究的发现提出了等离子体处理作为废水处理的一种前瞻性方法。

更新日期:2021-04-02
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