What's the process, and how much energy would it use?
I'm guessing the very low concentration of CO2 in the air will make this quite an energy intensive process. In fact it will probably take more energy than was released when the carbon was oxidised in the first place. But bear with me on that part. I'm just looking at the extraction for now.
Thanks!
2006-10-17 21:48:24 · 7 answers · asked by wild_eep 6 in Science & Mathematics ➔ Engineering
If you wish to capture CO2, one of the best ways to get smaller quantities is with a molecular sieve. This is a series of cylinders containing pellets designed to trap the CO2 in their pores and let other molecules pass by. Once the pellets are saturated, you regenerate them to release the CO2.
For very large quantities, air liquefaction is usually the best method. Air is refrigerated to a very low temperature to convert all of the components into a liquid. Then with selective boiling, the various components are vaporized and collected.
This a very simple description of the two processes but you can follow up with web searches to get more information about the processes and companies that can help.
2006-10-18 03:39:28 · answer #1 · answered by oil field trash 7 · 1⤊ 0⤋
Interesting question. If you have windows and door, just open it for few days and this will solve your problem.
If a confined area, you may use buoyancy tactic. First to inject the gases which is heavier than CO2. Then as the CO2 float to the soffit of the slab, just extrat it out by exhaust fan.
Alternatively, you may also size your exhaust fan to take 12 air change hourly. Place your fan 1 feet above the floor level. On the top of the room, just open a small windows to take in fresh air.
If for processing, i believe you can put those solution that will dissolve CO2 in the gas.
2006-10-17 22:03:07 · answer #2 · answered by Mr. Logic 3 · 0⤊ 0⤋
I'm not entirely sure what is it you want to know but..
Bubbling air through lime water will remove CO2 from it.. there are also CO2 "scrubbers" available which are tubes containing lime which you pass the "gas" you wish to remove CO2 from.
If you want CO2 isolated rather than removing it, I think freezing it is the best bet. Water comes out of the air first then CO2.. I think the freezing point of CO2 is something like -79.4oC, since CO2 sublimate start to cardice/dry ice/solid carbon dioxide you won't get any messy liquids about the place.
2006-10-18 01:07:11 · answer #3 · answered by blue_cabbage 2 · 2⤊ 0⤋
As co2 is heavier than air, a centrifuge should do the trick. Spin fast and while spinning open a valve on the outside edge to tap off the co2
Interesting to know how fast you would need to spin.
2006-10-17 21:55:22 · answer #4 · answered by amania_r 7 · 0⤊ 0⤋
How about refrigeration, I'm sure Carbon Dioxide is the first gas in "air" that will turn to a solid.
2006-10-17 22:04:09 · answer #5 · answered by Anonymous · 2⤊ 0⤋
press the button on any co2 fire extingusher.. whooomp there ya go, co2
2006-10-17 21:57:21 · answer #6 · answered by Anonymous · 0⤊ 0⤋
compression of about 600 psi, it will liquify
2006-10-17 22:00:40 · answer #7 · answered by Slave to JC 4 · 1⤊ 0⤋