scholarly journals Investigation of the relative reactivity of volatile organic compounds in the air plasma of a pulsed corona discharge by the method of competing reactions

2021 ◽  
Vol 2064 (1) ◽  
pp. 012094
Author(s):  
I E Filatov ◽  
V V Uvarin ◽  
E V Nikiforova ◽  
D L Kuznetsov
Keyword(s):  
Volatile Organic Compounds ◽  
Corona Discharge ◽  
Organic Compounds ◽  
Relative Reactivity ◽  
Air Plasma ◽  
Plasma Chemical ◽  
Pulsed Corona Discharge ◽  
Pulsed Corona ◽  
Volatile Organic ◽  
Competing Reactions

Abstract A method for determining the relative reactivity of volatile organic compounds (VOCs) with respect to the air plasma of a pulsed corona discharge is proposed. It is based on the use of specially selected mixtures of organic compounds. The approach is based on the method of competing reactions: all components of the mixture are in equal conditions, so the relative reactivity can be determined with high accuracy using the gas chromatography. The parameters of scaling processes are proposed – plasma chemical yield, relative reactivity, formal reagent as a set of plasma components. In this paper, using the example of a number of VOCs, we demonstrate the extended capabilities of the method using a special technique for processing experimental data. More accurate data on the relative reactivity of a number of VOCs of wide application have been obtained. It is proposed to use the energy yield of ozone as a criterion for the energy efficiency of a plasma chemical installation.

Pulsed Multipoint-to-Plate Corona Discharge for VOC Abatement

2004 ◽  
Vol 7 (2) ◽  
Author(s):  
Monica Magureanu ◽  
Nicolae Bogdan Mandache ◽  
Cristian Ruset
Keyword(s):  
Volatile Organic Compounds ◽  
Corona Discharge ◽  
Organic Compounds ◽  
Total Oxidation ◽  
Pulsed Corona Discharge ◽  
Short Pulses ◽  
Pulsed Corona ◽  
Volatile Organic ◽  
Toluene Conversion ◽  
Voc Abatement

AbstractThis contribution reports investigations on a pulsed corona discharge in multipoint-to-plate configuration, with the aim of total oxidation of volatile organic compounds (VOC), in particular toluene. Both long pulses (1-2 ms), and short pulses (100 ns) were used. Much higher discharge currents (6-8 A) and energy per pulse (8-15 mJ) were obtained when using the short pulses, as compared to the values for long pulses (0.5 A , 1.5 mJ). Preliminary experiments in mixtures of air and toluene showed toluene conversion in the plasma of 25-30%, with CO

scholarly journals Исследование относительной реакционной способности ароматических соединений в воздухе под действием плазмы импульсного разряда

2021 ◽  
Vol 47 (22) ◽  
pp. 9
Author(s):  
И.Е. Филатов ◽  
В.В. Уварин ◽  
Д.Л. Кузнецов
Keyword(s):  
Water Vapor ◽  
Corona Discharge ◽  
Aromatic Compounds ◽  
Relative Reactivity ◽  
Air Purification ◽  
Plasma Chemical ◽  
Pulsed Corona ◽  
Benzene Toluene ◽  
Nitrogen Stream ◽  
Competing Reactions

Based on the method of competing reactions, a method for determining the relative reactivity of aromatic vapors in relation to the plasma components of a pulsed corona discharge is developed. The parameters of the relative reactivity of aromatic compounds in the air and nitrogen stream were obtained using model mixtures based on benzene, toluene, and xylene with a content of 250-500 ppm. The effect of water vapor on the process is shown. The obtained data will be useful for optimizing the processes of plasma-chemical air purification from the vapors of toxic aromatic compounds.

scholarly journals Oxidation of Aqueous Toluene by Gas-Phase Pulsed Corona Discharge in Air-Water Mixtures Followed by Photocatalytic Exhaust Air Cleaning

Catalysts ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 549
Author(s):  
Maarja Kask ◽  
Marina Krichevskaya ◽  
Sergei Preis ◽  
Juri Bolobajev
Keyword(s):  
Corona Discharge ◽  
Gas Phase ◽  
Contact Time ◽  
Closed Loop ◽  
Simultaneous Treatment ◽  
Pulsed Corona Discharge ◽  
Air Cleaning ◽  
Pulsed Corona ◽  
Volatile Organic ◽  
Gaseous Toluene

The treatment of wastewaters containing hazardous volatile organic compounds (VOCs) requires the simultaneous treatment of both water and air. Refractory toluene, extensively studied for its removal, provides a basis for the comparison of its abatement methods. The oxidation of aqueous toluene by gas-phase pulsed corona discharge (PCD) in combination with the subsequent photocatalytic treatment of exhaust air was studied. The PCD treatment showed unequalled energy efficiencies in aqueous and gaseous toluene oxidation, reaching, respectively, up to 10.5 and 29.6 g·kW−1·h−1. The PCD exhaust air contained toluene residues and ozone in concentrations not exceeding 0.1 and 0.6 mg·L−1, respectively. As a result of the subsequent photocatalytic treatment, both airborne residues were eliminated within a contact time with TiO2 as short as 12 s. The results contribute to the possible application of the studied approach in closed-loop energy-saving ventilation systems.

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