Water Content Effect on Oxides Yield in Gas and Liquid Phase Using DBD Arrays in Mist Spray  

作　　者：陈秉岩 朱昌平 费峻涛 何湘 殷澄 王媛 蒋永锋 陈龙威 高远 韩庆邦 

机构地区：[1]Department of Mathematics and Physics, Hohai University, Changzhou 213022, China [2]Jiangsu Province Key Laboratory of Environmental Engineering, Nanjing 210036, China [3]Hohai University Nantong Institute of Marine and Offshore Engineering, Nantong 226300,China [4]College of Energy and Electrical Engineering, Hohai University, Nanjing 210098, China [5]College of Internet of Things, Hohai University, Changzhou 213022, China [6]College of Mechanical and Electrical Engineering, Hohai University, Changzhou 213022,China [7]Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China

出　　处：《Plasma Science and Technology》2016年第1期41-50,共10页等离子体科学和技术（英文版）

基　　金：supported by National Natural Science Foundation of China(Nos.11274092,51107033,11404092,11274091);the Nantong Science and Technology Project,China(No.BK2014024);the Open Project of Jiangsu Province Key Laboratory of Environmental Engineering,China(No.KF2014001);the Fundamental Research Funds for the Central Universities,China(No.2014B11414)

摘　　要：Electric discharge in and in contact with water can accompany ultraviolet（UV）radiation and electron impact, which can generate a large number of active species such as hydroxyl radicals（OH）, oxygen radical（O）, ozone（O_3） and hydrogen peroxide（H_2O_2）. In this paper, a nonthermal plasma processing system was established by means of dielectric barrier discharge（DBD）arrays in water mist spray. The relationship between droplet size and water content was examined,and the effects of the concentrations of oxides in both treated water and gas were investigated under different water content and discharge time. The relative intensity of UV spectra from DBD in water mist was a function of water content. The concentrations of both O_3 and nitrogen dioxide（NO_2） in DBD room decreased with increasing water content. Moreover, the concentrations of H_2O_2, O_3 and nitrogen oxides（NOx） in treated water decreased with increasing water content,and all the ones enhanced after discharge. The experimental results were further analyzed by chemical reaction equations and commented by physical principles as much as possible. At last,the water containing phenol was tested in this system for the concentration from 100 mg/L to9.8 mg/L in a period of 35 min.Electric discharge in and in contact with water can accompany ultraviolet（UV）radiation and electron impact, which can generate a large number of active species such as hydroxyl radicals（OH）, oxygen radical（O）, ozone（O_3） and hydrogen peroxide（H_2O_2）. In this paper, a nonthermal plasma processing system was established by means of dielectric barrier discharge（DBD）arrays in water mist spray. The relationship between droplet size and water content was examined,and the effects of the concentrations of oxides in both treated water and gas were investigated under different water content and discharge time. The relative intensity of UV spectra from DBD in water mist was a function of water content. The concentrations of both O_3 and nitrogen dioxide（NO_2） in DBD room decreased with increasing water content. Moreover, the concentrations of H_2O_2, O_3 and nitrogen oxides（NOx） in treated water decreased with increasing water content,and all the ones enhanced after discharge. The experimental results were further analyzed by chemical reaction equations and commented by physical principles as much as possible. At last,the water containing phenol was tested in this system for the concentration from 100 mg/L to9.8 mg/L in a period of 35 min.

关 键 词：dielectric barrier discharge（DBD） water mist spray water content hydrogen peroxide ozone nitrogen oxides 

分 类 号：O53[理学—等离子体物理] O461[理学—物理]