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4hv.org :: Forums :: General Science and Electronics
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CO2 scrubbing and water vapor removal

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IamSmooth
Wed Sept 26 2012, 11:12PM Print
IamSmooth Registered Member #190 Joined: Fri Feb 17 2006, 12:00AM
Location:
Posts: 1567
I plan to suck air through a large pvc tube filled with sodium hydroxide to remove CO2. I know that NaOH and CO2 will form H2O as a byproduct. Still, will the hydroxide also work as a desiccant, or should I have a chamber filled with silica gel beads or alumina?
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Bored Chemist
Thu Sept 27 2012, 07:33PM
Bored Chemist Registered Member #193 Joined: Fri Feb 17 2006, 07:04AM
Location: sheffield
Posts: 1022
NaOH is a good desiccant but the question is how dry do you need the air to be?
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IamSmooth
Thu Sept 27 2012, 08:09PM
IamSmooth Registered Member #190 Joined: Fri Feb 17 2006, 12:00AM
Location:
Posts: 1567
I just ordered a molecular sieve that will absorb water and CO2 and hydrocarbons from Delta Absorbers. It's a synthetic zeolite.
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Ash Small
Thu Sept 27 2012, 08:33PM
Ash Small Registered Member #3414 Joined: Sun Nov 14 2010, 05:05PM
Location: UK
Posts: 4245
IamSmooth wrote ...

I just ordered a molecular sieve that will absorb water and CO2 and hydrocarbons from Delta Absorbers. It's a synthetic zeolite.

How do you 'flush' it?..... Just bake it, or what?

(I suppose I could look on thir website, but it's late here, and I've had a drink or three.)
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IamSmooth
Thu Sept 27 2012, 11:08PM
IamSmooth Registered Member #190 Joined: Fri Feb 17 2006, 12:00AM
Location:
Posts: 1567
warm it and the water evaporates. keep it less than 350F
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