scholarly journals Oxidation of ammonium sulfite by a multi-needle-to-plate gas phase pulsed corona discharge reactor

2013 ◽  
Vol 418 ◽  
pp. 012128 ◽  
Author(s):  
Hua Ren ◽  
Na Lu ◽  
Kefeng Shang ◽  
Jie Li ◽  
Yan Wu
Keyword(s):  
Corona Discharge ◽  
Gas Phase ◽  
Pulsed Corona Discharge ◽  
Pulsed Corona ◽  
Ammonium Sulfite

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.

scholarly journals Abatement of amoxicillin and doxycycline in binary and ternary aqueous solutions by gas-phase pulsed corona discharge oxidation

2018 ◽  
Vol 334 ◽  
pp. 673-681 ◽  
Author(s):  
Alexander Sokolov ◽  
Matilda Kråkström ◽  
Patrik Eklund ◽  
Leif Kronberg ◽  
Marjatta Louhi-Kultanen
Keyword(s):  
Aqueous Solutions ◽  
Corona Discharge ◽  
Gas Phase ◽  
Pulsed Corona Discharge ◽  
Pulsed Corona

scholarly journals Non-thermal gas-phase pulsed corona discharge for lignin modification

2018 ◽  
Vol 126 ◽  
pp. 141-149 ◽  
Author(s):  
Alexander Sokolov ◽  
Lucas Lagerquist ◽  
Patrik Eklund ◽  
Marjatta Louhi-Kultanen
Keyword(s):  
Corona Discharge ◽  
Gas Phase ◽  
Pulsed Corona Discharge ◽  
Lignin Modification ◽  
Pulsed Corona

Pulsed corona discharge: the role of ozone and hydroxyl radical in aqueous pollutants oxidation

2013 ◽  
Vol 68 (7) ◽  
pp. 1536-1542 ◽  
Author(s):  
S. Preis ◽  
I. C. Panorel ◽  
I. Kornev ◽  
H. Hatakka ◽  
J. Kallas
Keyword(s):  
Hydroxyl Radical ◽  
Corona Discharge ◽  
Gas Phase ◽  
Fast Reaction ◽  
Water Contact ◽  
Pulsed Corona Discharge ◽  
Pulsed Corona ◽  
A Current ◽  
Oxidation Reaction Rate

Ozone and hydroxyl radical are the most active oxidizing species in water treated with gas-phase pulsed corona discharge (PCD). The ratio of the species dependent on the gas phase composition and treated water contact surface was the objective for the experimental research undertaken for aqueous phenol (fast reaction) and oxalic acid (slow reaction) solutions. The experiments were carried out in the reactor, where aqueous solutions showered between electrodes were treated with 100-ns pulses of 20 kV voltage and 400 A current amplitude. The role of ozone increased with increasing oxygen concentration and the oxidation reaction rate. The PCD treatment showed energy efficiency surpassing that of conventional ozonation.

Aqueous Benzene Oxidation in Low-Temperature Plasma of Pulsed Corona Discharge

2016 ◽  
Vol 19 (2) ◽  
Author(s):  
Iakov Kornev ◽  
Sergei Preis
Keyword(s):  
Low Temperature ◽  
Corona Discharge ◽  
Gas Phase ◽  
Pulse Repetition Frequency ◽  
Repetition Frequency ◽  
Pulse Repetition ◽  
Benzene Oxidation ◽  
Low Temperature Plasma ◽  
Temperature Plasma ◽  
Pulsed Corona

AbstractWastewaters polluted with non-biodegradable volatile organic compounds (VOCs), such as aromatic substances, present a growing problem meeting no adequately affordable technological response. Low-temperature plasma generated in the gas-phase pulsed corona discharge (PCD) presents competitive advanced oxidation technology in abatement of various classes of pollutants, although the process parameters, the pulse repetition frequency and the liquid spray rate, require optimization. The experimental research into aqueous benzene oxidation with PCD was undertaken to establish the impact of the parameters to the energy efficiency. The oxidation reaction was found under the experimental conditions to mostly proceed in the gas phase showing little influence of the pulse repetition frequency and the gas-liquid contact surface. Oxidation of benzene and, presumably, other volatile pollutants in the volume of PCD reactor compartment presents an effective strategy of aqueous VOCs abatement.

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