Removal of atmospheric pollutants from gas, related apparatuses, processes and uses thereof

A method for removing one or more sulfur oxides or nitrogen oxides from a gas stream comprising the steps of;

• introducing a gas stream comprising one or more sulfur dioxides or nitrogen oxides into a reaction vessel;
• generating a chlorine dioxide oxidant using an electrochemical device positioned adjacent to and outside of the reaction vessel;
• introducing the chlorine dioxide oxidant into the reaction vessel in a manner such that the oxidant is dispersed into the gas stream in a gaseous environment, wherein the chlorine dioxide oxidant that is introduced is produced within one minute away from the reaction vessel;
• causing one or both of the gas stream or the oxidant to contact a turbulence inducing device attached inside of the reaction vessel to cause the oxidant and gas stream to combine in the gaseous environment and form a mixture;
• and
• causing the mixture to undergo one or more reactions as the mixture passes through the reaction vessel in the gaseous environment to form other sulfur or nitrogen containing compounds within the reaction vessel.

A method for removing one or more sulfur oxides or nitrogen oxides from a gas stream comprising the steps of;

• introducing a gas stream comprising one or more sulfur dioxides or nitrogen oxides into a reaction vessel;
• generating a chlorine dioxide oxidant using an electrochemical device located adjacent the reaction vessel and having an outlet pipe extending to the reaction vessel;
• dispensing the chlorine dioxide oxidant from the electrochemical device through the outlet pipe and to an inlet into the reaction vessel configured to dispense the chlorine dioxide into the reaction vessel;
• and
• creating a swirl or turbulent flow gas stream flow condition in the reaction vessel to facilitate combining the chlorine dioxide oxidant and gas stream in a gaseous environment to form a mixture to promote one or more reactions of the sulfur dioxides or nitrogen dioxides in the gas stream to form other sulfur or nitrogen containing compounds within the reaction vessel as the mixture passes through the reaction vessel in the gaseous environment.