As described in the parent article, by far the most important advantage of their technology is that they do not need a traditional expensive process for capturing CO2 from the air, and then releasing it into a concentrated form (which requires much energy), to be used in fuel synthesis.
They just pass the air through water. A part of the CO2 from air will dissolve in water, up to its solubility limit.
The water with dissolved CO2 is then used in their electrolytic cells, which produce ethanol (dissolved in water). Presumably the water depleted in CO2 is reused to dissolve again CO2 from the air. (Some of the initial water is also converted into ethanol, so some fresh water must be added to the recirculated water.)
So they claim that they achieve in a sufficiently cheap way both the capture of CO2 from air and its conversion to fuel.
They just pass the air through water. A part of the CO2 from air will dissolve in water, up to its solubility limit.
The water with dissolved CO2 is then used in their electrolytic cells, which produce ethanol (dissolved in water). Presumably the water depleted in CO2 is reused to dissolve again CO2 from the air. (Some of the initial water is also converted into ethanol, so some fresh water must be added to the recirculated water.)
So they claim that they achieve in a sufficiently cheap way both the capture of CO2 from air and its conversion to fuel.