Atmospheric Pressure Non-thermal Plasma for Air Purification: Ions and Ionic Reactions Induced by dc+ Corona Discharges in Air Contaminated with Acetone and Methanol

Abstract

Atmospheric pressure non-thermal plasma for air purification: ions and ionic reactions induced by dc+ corona discharges in air contaminated with acetone and methanol

Nitrogen‐containing organic products from the treatment of liquid toluene with plasma‐activated N2 gas

“…[2] One process that has been extensively investigated since then is the oxidation of organic compounds by nonthermal plasma in air or in oxygen-containing gases, with fundamental research in this area being motivated by the interest in developing novel advanced oxidation processes (AOPs) to treat polluted air [3] and water. [4] These studies have provided a deep insight into the discharge-generated reactive species (electrons, molecular excited states, atoms, radicals, ions [5,6] ), which are responsible for the initial attack on the organic pollutants, and into the resulting degradation intermediates and final products. As the aim of such treatments is the complete mineralization of all organic carbon into CO 2 , [7] it is not surprising that discharges and conditions are optimized, so as to achieve as harsh an environment as possible in terms of type and concentration of strong oxidizing reactive species.…”

Insights into non-thermal plasma chemistry of acetone diluted in N2/O2 mixtures: a real-time MS experiment

“…However, understanding the processes involved and identifying the species in action are required to improve targeted pollutant degradation, so as to optimize plasma depollution technologies. Mass spectrometry can bring valuable answers for this issue 7 .…”

“…The effect of oxygen on the targeted VOC and on types and concentrations of compounds following the decomposition of this molecule has to be studied in detail. However, the great majority of the studied VOC depollution technologies by plasma are operated using dielectric barrier discharges, or moderate applied voltage corona discharges [2][3][4]7 . These discharges are characterized by highly non-homogeneous transient plasmas.…”

“…Mass spectrometry can bring valuable answers for this issue. 7 Discharge plasma reactivity starts with formation of electrons and ions. They transfer energy to the buffer gas molecules present in the dry mix composed of nitrogen and oxygen.…”

“…However, the great majority of the studied VOC depollution technologies by plasma uses dielectric barrier discharges (DBD), or moderate applied voltage corona discharges. [2][3][4]7 These discharges are characterized by highly non-homogeneous transient plasmas. It makes experimental reactivity studies very difficult, and all the more kinetic modeling.…”