[rfrey]

Had a look through the patents. Their IP seems to be around a forward-osmosis separation process. They use CO2 in ammonia on the dilute side of the osmosis process.

So my complete seat-of-the-pants, duffer-on-the-bench guess is that they have a CO2 capture process (or use CO2 from a nearby industrial combustion process), use the CO2 in their process to separate gasoline in place of a traditional distillation process, then remove the CO2 from the gasoline by precipitating it as ammonium carbonate, which can be sequestered somehow.