Is there any way of filtering co2 from the air?

Question

i was thinking of a project to make a unit that pushed air through filters and steam to try to capture as much co2 as possible
do you think it would be effective?

Answer 1

No, CO2 is very stable and inert; it takes a large energy input to break it down chemically. You would do better with a very high speed centrifuge or a vortex-style separator, similar to a dust precipitator. CO2 is a much more massive molecule than the O2 and N2 that comprises most of the air, and so it might be possible to separate it by such methods.

Note that a purely mechanical process like this would not be very efficient, but it might reduce the CO2 content by a measurable amount. You might be better off with an air liquefying plant, which could separate out the gasses by the temeratures at which they liquefy. CO2 liquefies under pressure at something like -90 degrees F, while the oxygen and nitrogen would remain gasses until around -190 degrees F.

Be extremely careful handling the dry ice that such a process would generate! It can cause instant frostbite and cold burns, and can take ths skin right off your hands! NEVER touch it with bare hands! Use gloves or tongs.

Answer 2

Photosynthesis (sp?). The procress by which plants convert CO2 to O2.

Answer 3

using photosynthetic organisms to convert CO2 to organic molecules. another way is carbon sequestration by oil fields, coal (to create coal bed methane) or dissolving it in the ocean (the ocean is the largest sink besides plant life for CO2)

Answer 4

Plants a field of sugarcane. It will suck tonnes of CO2 from the air.

Answer 5

see APOLLO 13
(one of their biggest concerns was co2)