Characterization and comparative evaluation of two atmospheric plasma sources for water treatment

Characterization and comparative evaluation of two atmospheric plasma sources for water treatment INTRODUCTIONIndustrial processes, agriculture, and more generally most human activities release a great variety of organic pollutants into aquatic environments, which are of concern due to their known or potential impact on the biosphere and specifically on human health. Valuable alternatives to microbiological degradation of harmful organic compounds in aqueous solution are the Advanced Oxidation Processes (AOPs), which use strong oxygen‐based oxidizers, such as hydroxyl radicals, hydrogen peroxide, and ozone, and produce no harmful byproducts.Among these methods, electrical discharges have proven effective in generating reactive oxygen species (ROS) and in removing organic pollutants from water. Over the last two decades many reactor configurations, working with different electrical excitation modes and different gases have been designed. The state of the art has been recently reviewed.In their review Jiang et al. identified three major approaches, namely electrical discharges above liquid surface, direct electrical liquid discharges and discharges in bubbles/vapor in liquids, and concluded that configurations involving bubbles or mixed gas‐liquid phases, known also as hybrid systems, show the highest energy efficiency.In a 2016 review, Vanraes et al. reported on yet another recently investigated group of configurations, so called “remotely generated plasmas”, in which the plasma is generated outside of the liquid phase http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Plasma Processes and Polymers Wiley

Characterization and comparative evaluation of two atmospheric plasma sources for water treatment

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Publisher
Wiley
Copyright
© 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
ISSN
1612-8850
eISSN
1612-8869
D.O.I.
10.1002/ppap.201700130
Publisher site
See Article on Publisher Site

Abstract

INTRODUCTIONIndustrial processes, agriculture, and more generally most human activities release a great variety of organic pollutants into aquatic environments, which are of concern due to their known or potential impact on the biosphere and specifically on human health. Valuable alternatives to microbiological degradation of harmful organic compounds in aqueous solution are the Advanced Oxidation Processes (AOPs), which use strong oxygen‐based oxidizers, such as hydroxyl radicals, hydrogen peroxide, and ozone, and produce no harmful byproducts.Among these methods, electrical discharges have proven effective in generating reactive oxygen species (ROS) and in removing organic pollutants from water. Over the last two decades many reactor configurations, working with different electrical excitation modes and different gases have been designed. The state of the art has been recently reviewed.In their review Jiang et al. identified three major approaches, namely electrical discharges above liquid surface, direct electrical liquid discharges and discharges in bubbles/vapor in liquids, and concluded that configurations involving bubbles or mixed gas‐liquid phases, known also as hybrid systems, show the highest energy efficiency.In a 2016 review, Vanraes et al. reported on yet another recently investigated group of configurations, so called “remotely generated plasmas”, in which the plasma is generated outside of the liquid phase

Journal

Plasma Processes and PolymersWiley

Published: Jan 1, 2018

Keywords: ; ; ; ;

References

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