Pulsed Corona Discharge Induced Hydroxyl Radical Transfer Through the Gas-Liquid Interface

Pulsed Corona Discharge Induced Hydroxyl Radical Transfer Through the Gas-Liquid Interface

Bibliographic Details
Parent link:Scientific Reports
Vol. 7.— 2017.— [16152, 6 p.]
Main Author: Ajo P. Petri
Corporate Author: Национальный исследовательский Томский политехнический университет Инженерная школа новых производственных технологий Отделение материаловедения
Other Authors: Kornev Ya. I. Yakov Ivanovich, Preis S. Sergei
Summary:Title screen
The highly energetic electrons in non-thermal plasma generated by gas phase pulsed corona discharge (PCD) produce hydroxyl (OH) radicals via collision reactions with water molecules. Previous work has established that OH radicals are formed at the plasma-liquid interface, making it an important location for the oxidation of aqueous pollutants. Here, by contacting water as aerosol with PCD plasma, it is shown that OH radicals are produced on the gas side of the interface, and not in the liquid phase. It is also demonstrated that the gas-liquid interfacial boundary poses a barrier for the OH radicals, one they need to cross for reactive affinity with dissolved components, and that this process requires a gaseous atomic H scavenger. For gaseous oxidation, a scavenger, oxygen in common cases, is an advantage but not a requirement. OH radical efficiency in liquid phase reactions is strongly temperature dependent as radical termination reaction rates increase with temperature.
Language:English
Published: 2017
Subjects:
электронный ресурс
труды учёных ТПУ
Chemical engineering
Reaction kinetics and dynamics
Process chemistry
Online Access:https://doi.org/10.1038/s41598-017-16333-1
Format: Electronic Book Chapter
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=666901

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