How To: Make A Carbon Filter
airefresh.net
MYO (Make Your Own)
This design is for smaller rooms, such as a bedroom; but you can make ones for your duct work in the home.
What’s a carbon filter?
“Pieces of activated carbon used to remove contaminants and impurities, utilizing chemical adsorption.
Each piece of carbon is designed to provide a large section of surface area, in order to allow contaminants the most possible exposure to the filter media.
This carbon is generally activated with a positive charge and is designed to attract negatively charged water contaminants.
Carbon filtering is commonly used for water purification, but is also used in air purifiers.”
What you need:
- Atrium Grate
- single legging, the cheap ones that come in the “eggs” are perfect.
- zip ties at least two (for 3″, zip ties must be 11″ min)
- a few ounces (for the 3″) activated carbon.
- scissors, to trim the zip-ties.
- a length of Duct or Foil (to mount it.)
Cost:
~ $15 (using a 3″ grate)
Where do I find these items?
- Atrium Grate (Home Depo/Lowes)
- single legging (Any department store, Walmart, Sears, Macy’s)
- zip tie, or two (Home Depo/Lowes)
- activated carbon. (Pet or Fish store)
Items laid out:
Pull Stocking over grate:
Apply two zip-ties:
Cut the extra zip-tie:
Apply some tape to the cut parts of the zip-tie so the stocking does not rip during the next step.
Pull stocking over grate:
Pour in the opening of the stocking, a few ounces (3-5) of the activated carbon; make sure to spread it around well and once satisfied pull the stoking tight and tie a tight knot in the end. Keep the stoking tight so that the filter does not loose shape and sage. Sagging would greatly diminish the performance of the filter.
All done; now just attach it to a small AC or fan and let the fresh air flow.
Background info from Wikipedia
Filter Images from icmag
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