Diy homemade carbon scrubber

Written by brian baer
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Diy homemade carbon scrubber
Carbon scrubbers are used to remove smoke from indoor environments. (Jupiterimages/ Images)

A carbon scrubber is designed to remove impurities and chemicals from air and other gases. Activated carbon is used as the scrubbing media. The high surface area of the activated carbon particles combined with carbon's electron affinity for chemical bonding make the media very effective. Also known as carbon filters, carbon scrubbers can be bought at most hardware stores and used to remove smoke, odours and other chemicals.

Skill level:
Moderately Challenging

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Things you need

  • Plywood
  • Nails or screws
  • Tape measure
  • Power saw
  • Jigsaw
  • 2 hinges
  • 2 fibreglass filters, 20-by-24 (1-inch thick residential HVAC filters)
  • Activated carbon
  • Electric blower, 120V with 8-inch inlet and 3-inch outlet
  • Flexible dryer vent hose
  • Pencil
  • Screwdriver

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  1. 1

    Build a wooden box out of plywood that is 24 inches wide, 12 inches deep and 20 inches high. Use the tape measure to measure the cuts and the power saw to saw the plywood. There should be two 20-by-24-inch pieces, two 12-by-24-inch pieces and two 12-by-20-inch pieces.

  2. 2

    Measure and draw a square on one of the larger wooden pieces (20-by-24). Using the measuring tape and pencil, measure two inches from each side and draw a square. Use the jigsaw to cut the square hole out of the wood. Repeat for the second side but measure six inches from the top and bottom and eight inches from the sides. This will form a square in the centre of the board that is 8-by-8 inches. The finished pieces should like picture frames.

  3. 3

    Place one of the 12-by-20 inch pieces on the ground and attach the larger pieces and side pieces using the nails or screws. Do not attach the top piece yet. Insert the two fibreglass filters on the inside next to the cut holes.

  4. 4

    Fill the centre of the box with activated carbon. The carbon should pour in the space between the filters without falling out. Attach the top using hinges and a screwdriver.

  5. 5

    Connect the electric blower inlet nozzle to the side with the 8-by-8-inch hold. Use screws to hold it in place. Attach the flexible dryer vent hose to the outlet nozzle of the blower. Plug the blower in to scrub the air.

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