Activated Carbon Air Filter

activated carbon air filter

An activated carbon air filter, also referred to as an activated charcoal filter, is used in odour control and volatile organic compound (VOC) abatement. Systems using these filters are used to control these emissions and other harmful airborne chemicals released from industrial processes.

Part of the EXEON mission is to supply workplaces with clean air through the design, installation and servicing of activated carbon air filters . Our expert advice, innovative design and practical solutions ensure you can benefit from an activated charcoal filter system that protects both your workforce and local environment.

Activated Charcoal Filter System Designed To Your Needs

We can design and install a complete system to meet your specific requirements, following a detailed assessment. Read more about our technical design service for activated charcoal filter systems.

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An introduction

activated charcoal filter

Activated carbon has been used since the First World War to protect infantry against chemical gas attack.

The base material can be coal, wood or even peat, but the best quality carbon uses coconut shells. The material is chemically or thermally treated, usually with superheated steam, to expose the internal pore structure. This increases the surface area by over 100 times. A teaspoonful of carbon can have the surface area of a football pitch.

The vast surface area and tortuous route through the pore structure encourages molecular to surface collisions. “Van der Waal” forces cause molecules to attract and remain within the carbon structure, this is known as “adsorption”.

The carbon is typically in pellet or granular form in beds,
arranged so that air can pass through. The time the air is in
contact with the carbon is known as “dwell” or “contact”
time. Typical dwell times range from 0.1 seconds to 1
second or more in large “deep bed” adsorbers.

When the bed is “saturated” with contaminant, then
“breakthrough” is experienced, with emissions rising. This
means the bed is exhausted and no further adsorption can
take place.

Technical Design Service

We have facilities for full CAD design of systems on a site-by-site basis and can provide both 3D visuals and
detailed working drawings. We can also carry out dispersion modelling and odour
testing.