Electrohydraulic Discharge and Nonthermal Plasma for Water Treatment

Abstract

The application of strong electric fields in water and organic liquids has been studied for several years, because of its importance in electrical transmission processes and its practical applications in biology, chemistry, and electrochemistry. More recently, liquid-phase electrical discharge reactors have been investigated, and are being developed, for many environmental applications, including drinking water and wastewater treatment, as well as, potentially, for environmentally benign chemical processes. This paper reviews the current status of research on the application of high-voltage electrical discharges for promoting chemical reactions in the aqueous phase, with particular emphasis on applications to water cleaning.

Characterization of plasma-induced phenol advanced oxidation process in a DBD reactor

“…There is currently much ongoing research to exploit and apply electrical discharges for water purification [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16]. Many different prototype reactors have been developed, including systems in which the discharge occurs into [2][3][4][5] or above the liquid [6][7][8][9], as well as hybrid reactors, which utilize both gas phase non-thermal plasma and direct liquid phase corona-like discharge in the water [10,11].…”

“…Many different prototype reactors have been developed, including systems in which the discharge occurs into [2][3][4][5] or above the liquid [6][7][8][9], as well as hybrid reactors, which utilize both gas phase non-thermal plasma and direct liquid phase corona-like discharge in the water [10,11]. In addition reactors have been reported in which the solution to be treated is supplied into the discharge area as an aerosol [12] or as a falling-water film [13,14].…”

Water treatment by the AC gliding arc air plasma

“…Inactivation of microorganisms is relevant to the presence of various reactive plasma species, such as OHÁ, HÁ, OÁ, and HO 2 and molecular species such as H 2 O 2 , H 2 , and O 2 . Electric field, ultraviolet radiation, and shock waves are other parameters of plasma which may have different positive effects on the treatment of water [2][3][4][5][6][7].…”

Discharge phenomena in a cavitation bubble induced by liquid-phase laser ablation

“…One is the growing interest in electrical discharges involving liquid phases [1][2][3]. Electrical discharges with liquids are categorized into two types.…”