Carbon filters remove odors, gases, vapors or other airborne chemical contaminants.
Sometimes referred to as activated carbon, this filter media operates on a principle known as adsorption. The structure of activated carbon includes millions of microscopic pores where gases enter and condense to a liquid on the carbon surface. One pound of carbon has over six-million square feet of surface area allow the carbon to maintain its gas capture efficiency for a long period of time, up to four years in some HVAC applications. Similar to the process wherein baking soda is used in refrigerators to control odors carbon is used in HVAC systems to protect people from annoying, obnoxious or harmful airborne chemical contaminants. It is also used for contaminant control down to a molecular level to protect the end product in manufacturing processes such as chip or semiconductor wafer production.
Removing Odors and Ozone
Casinos commonly use carbon to remove gaseous contaminants associated with smoking so patrons feel comfortable and continue to use their services. Carbon is used in airports to remove the odors associated with jet fumes and the bio-effluent odors of many people within a confined space. Carbon also offers a tremendous benefit in that it has a catalytic reaction with ozone (O3), a health related contaminant common in urban environments, where the ozone is actually converted to oxygen (O2).
Types of Carbon Products Available
Camfil offers several engineered carbon or adsorption products. For the light-duty removal of gaseous contaminants associated with urban environments we offer powdered carbon impregnated on to a media in the form of bags or box filters that may be used in regular HVAC systems.
For protecting artifacts in museums or archives, or medium-duty odor removal including airports, sewerage treatment plants or specific gaseous target contaminant removal Camfil offers granular carbon in trays or cylinders that are installed in HVAC housings. These systems may have 48 to 120 pounds of carbon per 2000 cfm of airflow and normally have a longer in-use life expectancy when compared to impregnated media products.
Camfil also offers the highest grade of adsorber where carbon or another adsorbent is treated so it will specifically remove gaseous contaminants deemed hazardous or dangerous. These High Efficiency Gaseous Adsorber (HEGA) air filters are used in nuclear facilities, pharmaceuticals and laboratories. They are installed in a housing that is defined as a ‘containment housing’ where the airflow within the housing I isolated and air filters are changed without direct human contact and disposed of accordingly.
Some additional applications that benefit from carbon’s ability to remove gaseous contaminants include:
|Bus or Transportation Terminals||Chemical Plants of Storage||Bars or Cocktail Lounges|
|Conference Rooms or Auditoriums||Convention Centers||Dental Offices of Labs|
|Morgues or Embalming Areas||Hospitals||Locker Rooms|
|Veterinarian Facilities & Pet Shops||Plastics Manufacturing||Printing Plants|