title: A novel two-level dielectric barrier discharge reactor for methyl orange degradation.
abstract: A novel pilot two-level dielectric barrier discharge (DBD) reactor has been proposed and applied for degradation of continuous model wastewater. The two-level DBD reactor was skillfully realized with high space utilization efficiency and large contact area between plasma and wastewater. Various conditions such as applied voltage, initial concentration and initial pH value on methyl orange (MO) model wastewater degradation were investigated. The results showed that the appropriate applied voltage was 13.4 kV; low initial concentration and low initial pH value were conducive for MO degradation. The percentage removal of 4 L MO with concentration of 80 mg/L reached 94.1% after plasma treatment for 80min. Based on ultraviolet spectrum (UV), Infrared spectrum (IR), liquid chromatography-mass spectrometry (LC-MS) analysis of degradation intermediates and products, insights in the degradation pathway of MO were proposed.
authors: College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, Shandong, China. Electronic address: qiqitxm_2002@sina.com.cn.
authors: Xumei
authors: X
authors: Tao
authors: College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, Shandong, China.
authors: Guowei
authors: G
authors: Wang
authors: College of Electromechanical Engineering, Qingdao University of Science and Technology, Qingdao 266042, Shandong, China.
authors: Liang
authors: L
authors: Huang
authors: College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, Shandong, China.
authors: Qingguo
authors: Q
authors: Ye
authors: College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, Shandong, China.
authors: Dongyan
authors: D
authors: Xu
mesh_terms: D001391:Azo Compounds / Q000737:chemistry*; D002853:Chromatography, Liquid; D004396:Coloring Agents / Q000737:chemistry*; D055664:Electrochemical Techniques; D013058:Mass Spectrometry; D062065:Wastewater / Q000737:chemistry; D014874:Water Pollutants, Chemical / Q000737:chemistry*
chemical_list: D001391:Azo Compounds; D004396:Coloring Agents; D062065:Wastewater; D014874:Water Pollutants, Chemical; C100258:methyl orange
keywords: Degradation mechanism; Dye wastewater; MO degradation; Two-level DBD