Effective ozone generation utilizing a meshed-plate electrode in a dielectric-barrier discharge type ozone generator

Park, Seung-Lok; Moon, Jae-Duk; Lee, Seug-Hoon; Soo-Yeon, Shin

doi:10.1016/j.elstat.2005.06.007

Cited by 81 publications

(31 citation statements)

References 5 publications

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“…It means that the reaction is directly controlled by the electric energy transferred to the gas phase. A similar behaviour has been reported by authors studying the formation of O 3 by non-thermal plasma [25,26]. It can be suggested that hydrogen peroxide formation is connected to short life species, located only in the plasma zone.…”

Section: Influence Of Plasma Parameters On H 2 O 2 Formationsupporting

confidence: 70%

Synthesis of Hydrogen Peroxide Using Dielectric Barrier Discharge Associated with Fibrous Materials

Thévenet

Couble

Brandhorst

et al. 2010

Plasma Chem Plasma Process

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A new synthesis pathway toward hydrogen peroxide has been investigated using non-thermal plasma. This work is aimed at studying the activation of oxygen/ hydrogen mixtures by a cylindrical dielectric barrier discharge. An experimental device has been especially developed for this application, it mainly differs from other cylindrical discharges in that the liquid ground electrode, and subsequently the reactor, can be regulated in temperature. The formation of hydrogen peroxide is reported (1) in a gas phase discharge and (2) in surface discharge. The gas phase discharge, characterized by an empty discharge gap, lead to a low activation of O 2 into O 2 /H 2 mixtures and poor selectivity toward H 2 O 2 . The modification of the discharge into a surface discharge, by introducing in the gap fibrous materials, considerably improves the efficiency of the process. The influence of the temperature on H 2 O 2 formation is discussed and correlated to the formation of a water layer on fibre surface. This layer appears to be a crucial point into H 2 O 2 plasma synthesis. The presence of TiO 2 on the fibre surface is reported as improving the stabilisation of hydrogen peroxide. The formation of a complex between H 2 O 2 and TiO 2 is suggested and discussed. The formation of H 2 O 2 in the gas phase or in the aqueous condensed phase is finally discussed. The investigation of the influence of the reactant gas composition and the presence or not of water, lead to the conclusion that (1) both H 2 and O 2 are required to achieve the synthesis reaction; (2) H 2 O 2 is formed in the gas phase and F. Thevenet

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Section: Influence Of Plasma Parameters On H 2 O 2 Formationsupporting

confidence: 70%

Synthesis of Hydrogen Peroxide Using Dielectric Barrier Discharge Associated with Fibrous Materials

Thévenet

Couble

Brandhorst

et al. 2010

Plasma Chem Plasma Process

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“…Among them, attention is paid to the concepts, where the metal mesh makes an outer electrode (Chang and Wu 1997;Jung and Moon 2008;Okazaki 2005) or is located in the reactor discharge zone (Haverkampf et al 2002;Motret et al 2002;Park et al 2006). When the mesh is located in the discharge gap, the energy efficiencies of the ozone synthesis process to a significant degree depends on the mesh woven density and the wire thickness (Haverkampf et al 2002).…”

Section: Introductionmentioning

confidence: 98%

Effective Ozone Generation in Oxygen Using a Mesh Electrode in an Ozonizer with Variable Linear Velocity

Jodzis

2012

Ozone: Science & Engineering

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Results of studies on ozone synthesis under discharges proceeding in a metal mesh-ceramic dielectric system have been presented. The experiments were carried out in the reactor with unique reaction space geometry, in which the reacting gas flew with consequently increasing linear velocity. The high voltage electrode was made of a metal mesh, which caused intensification of the gas mixing in the reaction space. Using a simple reactor with one-side cooling of the reaction space, high ozone maximum concentrations (100 g/Nm 3 ) and energy efficiencies were obtained at 25 • C.

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“…It must have a high over potential to prohibit the oxygen evolution and be stable to strong anodic polarization in the electrolyte. Several anode materials have been investigated, Pt, DSA, Au, Pd, PbO 2 , SnO 2 , boron doped diamond (BDD) and glassy carbon are some of them [13]. It can be clearly seen from the literature that Pt and PbO 2 anodes have shown higher current efficiency 6.5-35 % at low temperature and 13% at room temperature respectively.…”

Section: Introductionmentioning

confidence: 95%

“…Current technology in ozone production utilizes several techniques [13] but in situ ozone can be generated by following technologies: (i) Corona discharge (dielectric barrier discharge); (ii) UV irradiation (photochemistry) and (iii) Electrochemical ozone production (electrolysis of aqueous solutions) [9,14] Corona process, which is the traditional way to produce ozone, utilizes electrical discharges. In this process ozone is generated by passing dry oxygen or air through a high energy electric field, which oxygen is converted into ozone, generated an AC high voltage applied across plate and ground electrodes covered by dielectric [13,14,15]. For the efficiency of ozone generation (O 2 +O O 3) in Corona discharge following factors are important; (i) oxygen source, (ii) gas temperature and (iii) presence of impurities in the gaseous phase [10].…”

Section: Introductionmentioning

confidence: 99%

Electrochemical Degradation of Textile Effluent Using Novel Ozone Generating Sn Sb Ni Anodes

Sivrioğlu¹,

Yonar²

2016

Fourth International Conference on Advances in Bio-Informatics and Environmental Engineering - ICABEE 2016

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Abstract-The application of Sn-Sb-Ni electrodes for the treatment of waste streams is promising for ozone production by electrolysis of water because of their stability and over potential for the oxygen evolution reaction. These series of anodes have high electrochemical ozone generation potential at ambient conditions (apprioximately 40% current efficiency). But the usinng and testing of these novel anodes for real wastewater are too limited in literature. Titanium mesh substrate coated with SnSb-Ni alloy was used as anode immersed in wastewater at room temperature with platinised titanium cathode. Five operational parameter ssuch as: initial dye concentration, pH, COD, applied voltage/current and the contact time were evaluated for the ozonation process. Experimental findings revealed that after 30 min the degradation efficiency of dye and COD could reach upto 99% and 98% respectively at pH 3 and temperature of 25°C as the optimum conditions.

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Effective ozone generation utilizing a meshed-plate electrode in a dielectric-barrier discharge type ozone generator

Cited by 81 publications

References 5 publications

Synthesis of Hydrogen Peroxide Using Dielectric Barrier Discharge Associated with Fibrous Materials

Synthesis of Hydrogen Peroxide Using Dielectric Barrier Discharge Associated with Fibrous Materials

Effective Ozone Generation in Oxygen Using a Mesh Electrode in an Ozonizer with Variable Linear Velocity

Electrochemical Degradation of Textile Effluent Using Novel Ozone Generating Sn Sb Ni Anodes

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