Carbon Filters

Written by Norene Anderson
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For a filtering system to remove gases from the air effectively, it should contain some type of carbon filter. Individuals with chemical sensitivity should be careful to determine the source of the carbon used in a filter. Two common sources of carbon used in air filters are coal and coconut husks. Coal is well known as a source of heat and many by-products.

The carbon from coconut husks may be more tolerable for extremely sensitive individuals. The surface area is one of the highest for activated carbon. The high amount of micro pores ranging from as small as five Angstoms allows for effective removal of VOCs (volatile organic compounds), odorous compounds, and low molecular weight gases.

More about Carbon Filters

Activated carbon is used in a variety of ways. It not only helps rid the air of gases, it is used to purify water. The adsorption qualities of activated carbon (or activated charcoal) are effective for removing the VOC produced by microorganisms. Carbon filters made from coconut husks are widely used in gas masks, respirators, and other areas where safe air filtration is required.

All filters must be maintained properly to receive the most benefit. Carbon filters have a limited life of efficiency. Always consult the manufacturer's guidelines for replacement of the carbon filter. The carbon will eventually lose the adsorption quality of the surface pores. The different types and sizes of pores are effective only when the surface is available. A buildup of contaminants will hinder the efficiency.


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