Apparatuses, systems, and methods for generating nitric oxide

A method for generating nitric oxide (NO), the method comprising:

• applying, by an energy source, a predetermined voltage or a predetermined current to a plurality of electrodes disposed in a reaction medium contained in a reaction chamber to generate NO, the plurality of electrodes comprising a cathode, the reaction chamber comprising a gas region and a liquid region, the liquid region configured to contain the reaction medium, the gas region configured to contain a product gas comprising NO;
• receiving a carrier gas through an inlet circuit in fluid communication with a sparger disposed in the reaction medium;
• emanating, by the sparger, bubbles of the carrier gas in the reaction medium to sweep a surface of one or more of the plurality of electrodes;
• and
• conveying the product gas from the reaction chamber through an outlet circuit, the outlet circuit in fluid communication with the gas region of the reaction chamber,
• wherein at least a portion of the product gas is circulated, in a recirculation circuit, back to the sparger in the reaction chamber.

An apparatus for generating nitric oxide (NO), the apparatus comprising:

• a reaction chamber having a liquid region and a gas region, the liquid region configured to contain a reaction medium, the gas region configured to contain a product gas comprising NO;
• a plurality of electrodes disposed in the reaction medium, the plurality of electrodes comprising a cathode;
• an energy source electrically connected to the plurality of electrodes and configured to apply a predetermined voltage or a predetermined current to the cathode to generate NO;
• a sparger disposed in the reaction medium;
• an inlet circuit in fluid communication with the sparger and configured to convey a carrier gas to the sparger, wherein the carrier gas preferably comprises nitrogen;
• an outlet circuit in fluid communication with the gas region of the reaction chamber and configured to convey the product gas from the reaction chamber;
• and
• a pressure vessel in fluid communication with the outlet circuit, the pressure vessel configured to receive the product gas from the outlet circuit, store the received product gas at or below a predetermined pressure, and release the received product gas.