Passive automatic injector reactor system

A mixing device comprising:

• a mixing chamber (160) in fluid communication with an oxygen source (145);
• and,
• a passive injector (140) comprising:
• an inlet in fluid communication with a battery enclosure (125) containing at least one target gas (135);
• and,
• an outlet in fluid communication with an inlet of the mixing chamber,
• wherein the passive injector and the mixing chamber are configured such that, in response to the at least one target gas exceeding a predetermined pressure threshold, then:
• the passive injector automatically and passively creates a fluid stream (Q1) of the at least one target gas into the mixing chamber,
• the mixing chamber entrains oxygen-containing fluid (Q2) from the oxygen source and mixes it into the fluid stream,
• the mixed fluid stream is delivered into a reactor chamber (165) configured to induce at least one predetermined chemical reaction in a presence of the at least one target gas and oxygen in the oxygen-containing fluid,
• wherein the mixing chamber and the passive injector are mechanically coupled to and supported by the battery enclosure such that the at least one target gas exits the battery enclosure through the passive injector.