Removal of NO and SO2 by pulsed corona discharge process

2001 ◽  
Vol 18 (3) ◽  
pp. 308-316 ◽  
Author(s):  
Young Sun Mok ◽  
Ho Won Lee ◽  
Young Jin Hyun ◽  
Sung Won Ham ◽  
Jae Hak Kim ◽  
...  
Keyword(s):  
Corona Discharge ◽  
Discharge Process ◽  
Pulsed Corona Discharge ◽  
Pulsed Corona

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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