Gas capture apparatus and method

An apparatus comprising:

• a climate control system comprising an air inlet for drawing air at a first temperature (T1) and providing the drawn air after thermal treatment of the drawn air to change its temperature from a first temperature (T1) to a second temperature (T2);
• an air-purification system, configured to capture a target gas from a substrate, the air-purification system comprising:
• a generation device for electrolyzing water to generate hydronium ions and hydroxide ions, comprising:
• a container for containing at least one electrolyte comprising water;
• a first compartment fluidically coupled to the container and including a first electrode adapted to generate a capture fluid by electrolysis of the water of the at least one electrolyte, the capture fluid being acidic and comprising hydronium ions or being basic and comprising hydroxide ions, the first compartment comprising a capture fluid outlet;
• a second compartment fluidically coupled to the container and including a second electrode adapted to generate a regeneration fluid by electrolysis of the water of the at least one electrolyte, the regeneration fluid being acidic and comprising hydronium ions if the capture fluid is basic or being basic and comprising hydroxide ions if the capture fluid is acidic, the second compartment comprising a recombination fluid outlet;
• and an ion communication structure between the first compartment and the second compartment adapted to at least suppress recombination of hydronium ions and hydroxide ions, the generation device further comprising the generation device further comprising a first compartment inlet and a second compartment inlet fluidically coupled to the first compartment and the second compartment;
• an exchange device comprising:
• a capture fluid inlet fluidically coupled to the capture fluid outlet;
• a substrate inlet;
• and
• an exchange fluid outlet, wherein the exchange device is adapted to expose at least part of the capture fluid received through the capture fluid inlet to at least part of the substrate received through the substrate inlet thereby generating an exchange fluid consisting of the capture fluid in which at least part of the target gas is captured;
• a regeneration device comprising:
• an exchange fluid inlet fluidically coupled to the exchange fluid outlet, a recombination fluid inlet fluidically coupled to the recombination fluid outlet, and a regeneration fluid outlet fluidically couple to the first compartment inlet and the second compartment inlet, wherein the regeneration device is arranged to contact at least a part of the exchange fluid received through the exchange fluid inlet with at least part of the recombination fluid to release the captured target gas from the at least part of the exchange fluid and to generate a regeneration fluid including regenerated water from the at least one electrolyte;
• and
• a controller electrically coupled to the first electrode and the second electrode, wherein the controller is adapted to generate a variable control signal having a minimum value sufficient to generate the water electrolysis at the first electrode and the second electrode respectively to control a rate of said water electrolysis.