Can carbon molecular sieves used in nitrogen generators be used to remove formaldehyde?
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Can the several tons of carbon molecular sieve removed from the company’s nitrogen generator be used to remove formaldehyde in the newly renovated office?
Yes, but be sure to regenerate the molecular sieve regularly. The adsorption of polar small-molecule organic compounds by molecular sieves is still quite significant.
Regenerate frequently? ? How to regenerate it? ? ?
Find an oven, heat the molecular sieve to around 250 degrees, maintain that temperature for 3–4 hours, and after cooling it can be used again. Alternatively, use a vacuum drying oven; at around 130–150 degrees, evacuate the chamber for 30–40 minutes, and after cooling, it can be used again.
Molecular sieves also absorb water, dear. How much more space is needed? Tons of molecular sieve?
Activated carbon has the ability to adsorb gases such as formaldehyde, and it is very effective at doing so. All activated carbons have an adsorption capacity; after some time, you can expose them to sunlight to reuse them, which is equivalent to desorption.
Molecular sieves won’t work; zeolites generally adsorb water, carbon monoxide, carbon dioxide, and the like.