Activated Carbon Filters
ADSORPTION is the physical attraction and adherence of gas or liquid molecules to the surface of a solid. Gas molecules are adsorbed by activated carbon. Adsorption products, when properly applied and maintained, can eliminate the vast majority of pollution problems caused by the gases and vapors, chemical pollution many commercial and industrial sites.
Activated carbon, the universal adsorbent, has a capacity for virtually all vapor contaminants and will adsorb and retain a wide variety of chemicals at the same time. Adsorption with active charcoal media has, and will continue to be, the most economical process. When carbon filters are changed regularly as they load, these filters perform efficiently and effectively.
How Carbon Filters work
Activated carbon is a unique material. There are no other materials, natural or man-made, that will do all that it will do. As stated earlier, activated carbon, the universal adsorbent, will adsorb some of almost any vapor. Whether there is one gas molecule and one carbon particle, or many of each, the adsorption process is the same. The physical process begins with a gas molecule coming into contact with the surface of an activated carbon particle and coming to rest in a large surface pore. Then, due to unbalanced forces on and within the carbon particle, the gas molecule will begin to move “down” into the carbon particle – into the smaller pores, where it will finally stop and be held in place. At some point between the surface and the “stopping point”, this gas molecule will condense and become a liquid particle.
V-Banks filters are used in large commercial and industrial applications, airports, stadiums, medical facilities, and in many clean room applications. These filters provide 18 to 36 pounds of carbon per filter, and are available for flow rates up to 18,000 cfm. For smaller applications, or lower concentrations of gasses, VOCs and odors, 2″ filters; in either pad or pleat form may be used.
OdorGuard 600 Replacement Carbon Filters
All OmniAire HEPA negative air machines can accommodate 2″ deep OdorGuard 600 carbon filters in addition to the 2″ primary/secondary particulate filter on the intake side. OdorGuard filters have low air resistance, high gas adsorption and high capacity. Designed for the gas phase, the 60% granular activated carbon has nearly 5 million square feet of surface area per pound.
VaporTrap V-Bank Carbon Filters
VaporTrap carbon filters are recommended when gaseous contaminants, continuously generated, require a large amount of activated carbon. The VaporTrap is a disposable V- Bank filter with bulk granular carbon. It has the same frame size as the HEPA filter and can be installed in an OmniAire machine in it’s place.
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