Carbon life testing
Legislation to protect our environment increasingly requires a gas-phase emission control system to reduce harmful gas emissions or control nuisance odours.
Part of the EXEON mission is to supply workplaces with clean air through the design, installation and servicing of emission control systems. Our expert advice, innovative design and practical solutions ensure you can benefit from an emission control system that protects both your workforce and local environment.
Learn how our odour control system design uses cartridge based or deep bed activated carbon. We can also deploy wet scrubber, gas scrubber and stripping towers where appropriate.Contact Us
Carbon life testing
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
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
The Client handled titanium and aluminium dust which are extremely explosive and required a wet collector to handle safely. The existing systems were undersized or non-existent and the extraction locations were poor, with air being drawn across operator breathing zones. Read more...
An abattoir handling large volumes of poultry was receiving numbers of complaints from the local area because of smells from blood and animal carcases. The operator had tried to reduce this by reducing the extraction from the process, but this had created extremely bad, even hazardous, conditions within the factory with excessive heat and steam. Increased Extraction with Odour control was urgently required. Read more...