Abstract: An electrode includes an elongated conductive metal support and a layer of carbon fibers supported by, and in electrical contact with, the elongated conductive metal support such that ends of fibers of the layer of carbon fibers extend beyond the conductive metal support.

Abstract: An electrode includes a plurality of fiber bundles. Each of the fiber bundles includes a plurality of individual fibers of different lengths with respect to an operation end of the electrode device. A screening ring is provided around the fiber bundles. The electrode may be used for example for generating corona discharge, which may be useful in liquid treatment.

Abstract: A method for oxidizing and disinfecting liquids including maintaining a reactor under sub-atmospheric pressure conditions; passing liquid within the reactor over a first electrode; and generating a high voltage, short pulse to a second electrode located opposite the first electrode, over the liquid that passes over the first electrode to create corona discharge. A reactor and an electrode suitable for use in such reactor are also disclosed.