Carbon Adsorption of VOCs
Low concentrations of Volatile Organic Compounds (VOCs) can be a problem in vent air streams, and it is often most cost effective to treat these by using a carbon filter. A carbon filter is a vessel containing activated carbon pellets or granules in a bed which the air passes through. The activated carbon contains a huge quantity of internal pores which provide a large surface area (typically 1000 m2/g) and as the air flows through the carbon filter the VOCs physically bind to the carbon surface (by a process called adsorption), so removing them from the air stream. The activated carbon operates batch-wise and is replaced once it is spent.
ERG can provide stand-alone carbon filters, or more typically integrates the carbon filter into a larger air pollution control package. A few examples of our diverse carbon applications include:
- Polishing residual VOCs from a pharmaceutical process vent stream scrubber package, with VOCs including toluene, MEK, ethyl acetate. These stainless steel vessels are equipped with fire monitoring and suppression.
- Mobile filters for a dedicated vent releasing batches of THF. The filters are configured as lead-lag, series operation and each run to saturation before being changed out for a vessel filled with a fresh charge of carbon media.
- Final polishing of low concentration VOCs in the vent gas from a building cladding fire-test facility. The vent gases from a number of different test furnaces and areas are treated in ERG’s abatement package which includes a carbon filter as one of the stages.
- Numerous examples of odour control where residual VOCs (and other odorous contaminants) are polished from the airstream using carbon – see our Odour Control pages.
Talk to our sales team about how one of ERG’s carbon filters can solve your site’s VOC emissions challenge.
Carbon Adsorption of VOCs
Low concentrations of Volatile Organic Compounds (VOCs) can be a problem in vent air streams, and it is often most cost effective to treat these by using a carbon filter. A carbon filter is a vessel containing activated carbon pellets or granules in a bed which the air passes through. The activated carbon contains a huge quantity of internal pores which provide a large surface area (typically 1000 m2/g) and as the air flows through the carbon filter the VOCs physically bind to the carbon surface (by a process called adsorption), so removing them from the air stream. The activated carbon operates batch-wise and is replaced once it is spent.
ERG can provide stand-alone carbon filters, or more typically integrates the carbon filter into a larger air pollution control package. A few examples of our diverse carbon applications include:
- Polishing residual VOCs from a pharmaceutical process vent stream scrubber package, with VOCs including toluene, MEK, ethyl acetate. These stainless steel vessels are equipped with fire monitoring and suppression.
- Mobile filters for a dedicated vent releasing batches of THF. The filters are configured as lead-lag, series operation and each run to saturation before being changed out for a vessel filled with a fresh charge of carbon media.
- Final polishing of low concentration VOCs in the vent gas from a building cladding fire-test facility. The vent gases from a number of different test furnaces and areas are treated in ERG’s abatement package which includes a carbon filter as one of the stages.
- Numerous examples of odour control where residual VOCs (and other odorous contaminants) are polished from the airstream using carbon – see our Odour Control pages.
Talk to our sales team about how one of ERG’s carbon filters can solve your site’s VOC emissions challenge.