Degradation of methyl orange using dielectric barrier discharge water falling film reactor

2017 ◽  
Vol 20 (2) ◽  
Author(s):  
Baowei Wang ◽  
Meng Xu ◽  
Chunmei Chi ◽  
Chao Wang ◽  
Dajun Meng
Keyword(s):  
Methyl Orange ◽  
Dielectric Barrier Discharge ◽  
Barrier Discharge ◽  
Ph Value ◽  
Falling Film ◽  
Catalytic Systems ◽  
Dielectric Barrier ◽  
Initial Ph ◽  
Film Reactor ◽  
Degradation Of Methyl Orange

AbstractThe dielectric barrier discharge (DBD) technique based cylindrical water falling film reactor was used for degrading an azo dye methyl orange (MO). The primary conditions affecting the degradation of methyl orange were systematically investigated. After 30 min plasma treatment, the degradation rate of MO was as high as 93.7% with gas velocity of 300 mL/min and the input energy of 72.5W. The influences of initial pH and conductivity of MO solution were also explored. The results indicated that the optimum pH value was 3.02 and 99.1% removal of MO was achieved within 30 min. Three catalytic systems DBD/Fe

scholarly journals Fe-MOFs prepared with the DBD plasma method for efficient Fenton catalysis

RSC Advances ◽  
2019 ◽  
Vol 9 (11) ◽  
pp. 6379-6386 ◽  
Author(s):  
Xumei Tao ◽  
Chao Sun ◽  
Liang Huang ◽  
Yuanyuan Han ◽  
Dongyan Xu
Keyword(s):  
Methyl Orange ◽  
Dielectric Barrier Discharge ◽  
Barrier Discharge ◽  
Fenton Process ◽  
Dbd Plasma ◽  
Dielectric Barrier ◽  
Plasma Method ◽  
Degradation Of Methyl Orange

Fe-MOFs were successfully synthesized with the dielectric barrier discharge (DBD) plasma method, and applied for degradation of methyl orange by the Fenton process.

Degradation of 4-Chlorobenzoïc Acid in a Thin Falling Film Dielectric Barrier Discharge Reactor

2014 ◽  
Vol 53 (25) ◽  
pp. 10387-10396 ◽  
Author(s):  
Olivier Lesage ◽  
Thibault Roques-Carmes ◽  
Jean-Marc Commenge ◽  
Xavier Duten ◽  
Michael Tatoulian ◽  
...  
Keyword(s):  
Dielectric Barrier Discharge ◽  
Barrier Discharge ◽  
Falling Film ◽  
Chlorobenzoic Acid ◽  
Dielectric Barrier ◽  
Film Dielectric ◽  
Dielectric Barrier Discharge Reactor

Degradation of Triton X-100 in Water Falling Film Dielectric Barrier Discharge Reactor

2016 ◽  
Vol 44 (4) ◽  
pp. 422-429 ◽  
Author(s):  
Munera M. Aonyas ◽  
Jelena Nešić ◽  
Milica Jović ◽  
Marijana Marković ◽  
Biljana Dojčinović ◽  
...  
Keyword(s):  
Dielectric Barrier Discharge ◽  
Barrier Discharge ◽  
Falling Film ◽  
Dielectric Barrier ◽  
Film Dielectric ◽  
Triton X ◽  
Dielectric Barrier Discharge Reactor

Degradation of Aqueous 3, 4-Dichloroaniline by Wire-Cylinder Dielectric Barrier Discharge Reactor

2012 ◽  
Vol 518-523 ◽  
pp. 1729-1732
Author(s):  
Jing Wei Feng ◽  
Chao Shi ◽  
Fang Fang Ding ◽  
Wen Jing Wang
Keyword(s):  
Dielectric Barrier Discharge ◽  
Ozone Concentration ◽  
Barrier Discharge ◽  
Ph Value ◽  
Input Power ◽  
Degradation Efficiency ◽  
Solution Ph ◽  
Dielectric Barrier ◽  
Ph Values ◽  
Dielectric Barrier Discharge Reactor

Degradation of aqueous 3, 4-dichloroaniline (3, 4-DCA) by wire-cylinder dielectric barrier discharge reactor was carried out in the present paper. Generation of reactive species was analyzed, changes of aqueous ozone concentration and solution pH values were examined; meanwhile, the effect of input power and initial pH value on the degradation efficiency of 3, 4-DCA were investigated. The results showed that the degradation efficiency of 3, 4-DCA increased with increasing input power when the input power was increased from 70 W to 90 W, while it decreased with increasing input power when the input power was increased from 90 W to 110 W; and the same changing trend was observed in the change of aqueous ozone concentration. At alkaline conditions and acidic conditions, 3, 4-DCA degradation rate was significantly higher than that of neutrality conditions. In addition, there was a remarkable decline of the solution pH values during 3, 4-DCA degradation.

Dielectric barrier discharge induced degradation of diclofenac in aqueous solution

2013 ◽  
Vol 69 (1) ◽  
pp. 76-83 ◽  
Author(s):  
Shaopeng Rong ◽  
Yabing Sun ◽  
Zehua Zhao ◽  
Huiying Wang
Keyword(s):  
Aqueous Solution ◽  
Dielectric Barrier Discharge ◽  
Advanced Oxidation Processes ◽  
Barrier Discharge ◽  
Ph Value ◽  
Evolutionary Process ◽  
Liquid Chromatography Mass Spectrometry ◽  
Aromatic Rings ◽  
Dielectric Barrier ◽  
Oxidation Processes

A dielectric barrier discharge (DBD) reactor as one of the advanced oxidation processes was applied to the degradation of diclofenac in aqueous solution. The various parameters that affect the degradation of diclofenac and the proposed evolutionary process were investigated. The results indicated that the inner concentrations of 10 mg/L diclofenac can be all removed within 10 min under conditions of 50 W and pH value of 6.15. The existence of Fe2+ in the liquid phase can promote the degradation of diclofenac. But it was rather ineffective in mineralization, because the intermediates containing the aromatic rings were recalcitrant to be degraded. Five intermediates were identified by liquid chromatography-mass spectrometry (LC-MS), the OH · radical and O3 were the major reactive species, and played an important role in the degradation of diclofenac. The toxicity of diclofenac degraded by DBD was assessed and the results indicated the efficiency of the DBD in the detoxification of the diclofenac solution.

Treatment of methyl orange dye wastewater by cooperative electrochemical oxidation in anodic–cathodic compartment

2013 ◽  
Vol 67 (3) ◽  
pp. 521-526 ◽  
Author(s):  
L. Pang ◽  
H. Wang ◽  
Z. Y. Bian
Keyword(s):  
Methyl Orange ◽  
Electrochemical Oxidation ◽  
Removal Efficiency ◽  
Ph Value ◽  
Dye Wastewater ◽  
Characteristic Absorption Peak ◽  
Divided Cell ◽  
Initial Ph ◽  
Cathodic Compartment ◽  
Degradation Of Methyl Orange

Electrochemical oxidation of methyl orange wastewater was studied using Ti/IrO2/RuO2 anode and a self-made Pd/C O2-fed cathode in the divided cell with a terylene diaphragm. The result indicated that the appropriate rate of feeding air improved the methyl orange removal efficiency. The discoloration efficiency of methyl orange in the divided cell increased with increasing current density. The initial pH value had some effect on the discoloration of methyl orange, which became not obvious when the pH ranged from 2 to 10. However, the average removal efficiency of methyl orange wastewater in terms of total organic carbon (TOC) can reach 89.3%. The methyl orange structure had changed in the electrolytic process, and the characteristic absorption peak of methyl orange was about 470 nm. With the extension of electrolysis time, the concentration of methyl orange gradually reduced; wastewater discoloration rate increased gradually. The degradation of methyl orange was assumed to be cooperative oxidation by direct or indirect electrochemical oxidation at the anode and H2O2, ·OH, O2−· produced by oxygen reduction at the cathode in the divided cell. Therefore, the cooperative electrochemical oxidation of methyl orange wastewater in the anodic–cathodic compartment had better degradation effects.

KN-B removal from water by non-thermal plasma

2013 ◽  
Vol 68 (6) ◽  
pp. 1288-1292 ◽  
Author(s):  
Ya-nan Liu ◽  
Lu Tian ◽  
Rui Li ◽  
Shu-fang Mei ◽  
Gang Xue ◽  
...  
Keyword(s):  
Barrier Discharge ◽  
Ph Value ◽  
Degradation Process ◽  
Reactive Black 5 ◽  
Dielectric Barrier ◽  
Chromophore Group ◽  
Low Concentrations ◽  
Initial Ph ◽  
Non Thermal Plasma ◽  
High Concentrations

The degradation of Reactive Black 5 (KN-B) in water using double-dielectric barrier discharge (DDBD) was studied. Experimental results showed that the KN-B degradation rate increased as the initial pH decreased. Low concentrations of Fe2+ enhanced the degradation, whereas high concentrations of Fe2+ hindered the degradation. The results showed that DDBD did not noticeably reduce total organic carbon but did reduce the pH value and improve the biodegradability of the solution significantly. Furthermore, the UV–Vis spectra of the dye showed that the chromophore group was damaged and that the solution was decolorized after the 10-min degradation process.

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