Apparatus, system and method for producing an ionized gas discharge for treatment of a medium

An apparatus comprising:

• a plasma generator having a pair of electrodes that define a reaction region;
• an introduction subsystem comprising an injector fluidically coupled to a liquid source and a process gas source and configured to introduce atomized liquid and process gas into the reaction region;
• a feedback mechanism comprising one or more sensors configured to detect reaction data associated with an electrical discharge in the reaction region;
• a control module operatively coupled to the plasma generator, the introduction subsystem, and the feedback mechanism and configured to generate the electrical discharge and to adjust at least one treatment parameter of the apparatus as a function of the reaction data.

A method comprising:

• providing a plasma generator having a pair of electrodes that define a reaction region;
• supplying a process gas to the reaction region;
• atomizing a liquid to form droplets and introducing the droplets with the process gas into the reaction region;
• initiating an electrical discharge within the reaction region while supplying the process gas and the liquid to the reaction region;
• maintaining a predetermined gas-to-liquid mass-flow ratio during concurrent introduction;
• forming reactive nitrogen species within the electrical discharge;
• detecting reaction data associated with the electrical discharge;
• adjusting at least one treatment parameter of the plasma generator as a function of the reaction data;
• condensing vapor downstream of the reaction region;
• and
• collecting condensed liquid in a collection reservoir as a solution enriched with the reactive nitrogen species.