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Novel electrode structure in a DBD reactor applied to the degradation of phenol in aqueous solution 被引量:1
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作者 Antonio MERCADO-CABREra Rosendo PE?A-EGUIlUZ +4 位作者 Régulo lóPEZ-CAllEJAS Bethsabet JAraMIllO-SIERra raúl valencia-alvarado Benjamín RODRíGUEZ-MéNDEZ Arturo E MU?OZ-CASTRO 《Plasma Science and Technology》 SCIE EI CAS CSCD 2017年第7期71-84,共14页
Phenol degradation experimental results are presented in a similar wastewater aqueous solution using a non-thermal plasma reactor in a coaxial dielectric barrier discharge. The novelty of the work is that one of the e... Phenol degradation experimental results are presented in a similar wastewater aqueous solution using a non-thermal plasma reactor in a coaxial dielectric barrier discharge. The novelty of the work is that one of the electrodes of the reactor has the shape of a hollow screw which shows an enhanced efficiency compared with a traditional smooth structure. The experimentation was carried out with gas mixtures of 90% Ar-10% O2, 80% At-20% 02 and 0% Ar-100% 02. After one hour of treatment the removal efficiency was 76%, 92%, and 97%, respectively, assessed with a gas chromatographic mass spectrometry technique. For both reactors used, the ozone concentration was measured. The screw electrode required less energy, for all gas mixtures, than the smooth electrode, to maintain the same ozone concentration. On the other hand, it was also observed that in both electrodes the electrical conductivity of the solution changed slightly from ,-0.0115 S m^-1 up to -0.0430 S m^-1 after one hour of treatment. The advantages of using the hollow screw electrode structure compared with the smooth electrode were: (1) lower typical power consumption, (2) the generation of a uniform plasma throughout the reactor benefiting the phenol degradation, (3) a relatively lower temperature of the aqueous solution during the process, and (4) the plasma generation length is larger. 展开更多
关键词 DBD gas discharges removal organic compounds discharge in liquids
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Atmospheric-pressure dielectric barrier discharge generation by a full-bridge flying capacitor multilevel inverter
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作者 Rosendo PE?A-EGUIlUZ José A lóPEZ-FERNáNDEZ +6 位作者 Antonio MERCADO-CABREra Bethsabet JAraMIllO-SIERra Régulo lóPEZ-CAllEJAS Benjamín RODRíGUEZ-MéNDEZ raúl valencia-alvarado Allan A FlORES-FUENTES Arturo E MU?OZ-CASTRO 《Plasma Science and Technology》 SCIE EI CAS CSCD 2017年第7期40-49,共10页
A new configuration of a resonant full-bridge flying capacitor multicell inverter has been designed and constructed with the aim of achieving an extended output voltage frequency range with low harmonic distortion and... A new configuration of a resonant full-bridge flying capacitor multicell inverter has been designed and constructed with the aim of achieving an extended output voltage frequency range with low harmonic distortion and reduced semiconductor commutation losses. This configuration was tested as a power supply for two different coaxial dielectric barrier discharge reactors, one of them employed for electric characterization and the other one for inorganic compound elimination in an aqueous solution. Two different gas mixtures, 90% Ar-10% 02 and 80% Ar-20% 02, were individually supplied during the experiments; the results showed a high- efficiency removal of meta-cresol (m-cresol) to the order of 98%, which was obtained by adding more oxygen to the plasma gas mixture. 展开更多
关键词 plasma applications water pollution plasma sources power supply circuits electricdischarges
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