scholarly journals The Transformation of Di- and Tri-chloromethane Induced By Low Voltage Discharge

2020 ◽  
Author(s):  
Bodrikov Ivan Vasilievich ◽  
Grinvald Iosif Isaevich ◽  
Titov Evgeniy Yuryevich ◽  
Titov Evgeniy Yuryevich ◽  
Razov Evgeniy Nikolaevich
Keyword(s):  
Electron Microscopy ◽  
Liquid Phase ◽  
Low Temperature ◽  
Gas Phase ◽  
Low Voltage ◽  
Current Source ◽  
Low Temperature Plasma ◽  
Plasma Discharges ◽  
Temperature Plasma ◽  
Molecular Systems

This article is focused on the transformation of di- and trichloromethane by induced low-voltage discharges in the liquid phase. To generate discharges, a direct current source is used (capacitance 2200 μF, voltage 60 V). The products and probable intermediates of the CH2Cl2 and CHCl3 transformation were determined by the methods of thermodynamic modeling, FTIR spectroscopy and electron microscopy. Under the action of low-voltage discharges on the liquid substrates, needle fullerene- like structures are formed. In this case the gas phase consists mainly of hydrogen chloride. From the simulation of the nonequilibrium composition of particles and molecular systems it follows that in the course of induced reactions of CH2Cl2 and CHCl3 and geminal elimination of HCl molecules, predominantly carbene-type intermediates are generated. Keywords: dichloromethane, trichloromethane, low temperature plasma, discharges in the liquid phase

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.

Particle and fluid simulations of low-temperature plasma discharges: benchmarks and kinetic effects

2005 ◽  
Vol 38 (19) ◽  
pp. R283-R301 ◽  
Author(s):  
H C Kim ◽  
F Iza ◽  
S S Yang ◽  
M Radmilović-Radjenović ◽  
J K Lee
Keyword(s):  
Low Temperature ◽  
Low Temperature Plasma ◽  
Plasma Discharges ◽  
Temperature Plasma ◽  
Kinetic Effects

Plasma-Chemical Simulation Fragmentation of Chloroform in the Liquid Phase by Direct Electrical Discharges

2020 ◽  
Vol 299 ◽  
pp. 1080-1085
Author(s):  
E.Yu. Titov ◽  
I.V. Bodrikov ◽  
A. M. Kutin
Keyword(s):  
Liquid Phase ◽  
Low Voltage ◽  
Electronic Subsystem ◽  
Low Temperature Plasma ◽  
Electrical Discharges ◽  
Plasma Chemical ◽  
Temperature Plasma ◽  
Activation Products ◽  
Calculation Results ◽  
Chemical Simulation

The process of chloroform fragmentation under the influence of low-voltage electrical discharges in the liquid phase is modeled. The composition of the low-temperature plasma of chloroform activation products is determined, using a chemical plasma model (CPM). The CPM is based on the principle of minimizing the Gibbs energy, which is supplemented by the concept of conditionally-equilibrium states for describing the non-equilibrium of an electro-contact plasma. The developed model provided an opportunity to characterize the energy-saturated electronic subsystem with a temperature of ≈ 11600 K and its “cold” part (ions, intermediates, synthons, molecules, etc.), with a temperature of about 1000 K. According to the calculation results, the participation of valence unsaturated fragments CCl2, CH, Cl· and molecules HCl, Cl2, C2Cl4, C2Cl2 in the transformation of chloroform.

Comments About the Article “On the Similarities of Low-Temperature Plasma Discharges”

2020 ◽  
Vol 48 (2) ◽  
pp. 596-601
Author(s):  
Nikolai A. Timofeev ◽  
Vladimir S. Sukhomlinov ◽  
Georges Zissis ◽  
Alexander S. Mustafaev ◽  
Davlat Quvatovich Solihov
Keyword(s):  
Low Temperature ◽  
Low Temperature Plasma ◽  
Plasma Discharges ◽  
Temperature Plasma
Sign in / Sign up

Export Citation Format

Share Document