Hey guys in a lab setting, chambered experiment in a somewhat enclosed area im working with a CCS company to reduce overall global GHG emission's and we're trying to come up with a machine that essentially uses CO2,CH4 and NO2 as fuel sources with no combustion however we've run into an issue of sorts as we've also decided to go into collecting noble gases as well and we'd like to increase the concentration of these gases however i have no idea as to how to accomplish this. I've looked everywhere on the web and i've ran into methane hydrates, Increasing gas pressure's and an overall lack of sources on the idea as i'm working with atmospheric conditions not aqueous. One solution to this could be building an aqueous permeable membrane but idk how that'd work with the other gases that are absorbed such as the noble gases. So i'd really like some help.