Adding carbon dioxide to waste to give it commercial value


We provide solutions for the treatment of industrial wastes and contaminated soils. By using carbon dioxide to produce materials for re-use, or for cheaper disposal, we deliver a unique combination of benefits, including rapid treatment times, diversion of waste from landfill, protection of natural resources (virgin aggregate) and a demonstrable contribution to the circular economy.

Our technology in detail

We utilise an innovative, patented solution called Accelerated Carbonation Technology (ACT) that is a rapid, cost-effective treatment suitable for soil and waste.

ACT can be used in both on-site and off-site operations and can be integrated into existing industrial processes. It is a controlled, accelerated version of the naturally occurring carbonation process, which results in an improvement in the chemical and physical properties of the treated materials.

The technology can utilise waste gaseous emissions from local sources, capturing significant volumes of CO2. When carbonation is used in the recovery and recycling of waste, an end product with real value is created. The advantages of ACT are numerous:

  • Rapid treatment – only a few minutes (as opposed to days or months with other technologies)
  • Waste CO2 is sequestered and converted into carbonate salts, providing carbon credits
  • The immobilisation of a wide variety of materials, including heavy metals, in carbonated products (at near neutral pH) renders them permanently non-hazardous or inert
  • The process results in increased product density, controlled particle size and improved geotechnical properties
  • The product can be used as a secondary aggregate, engineering fill or specialist construction materials

ACT applications

ACT treats contaminated soil and waste to provide a rapid cost-effective solution for:

  • Industrial waste recycling and re-use
  • Pre-treatment of waste streams prior to disposal
  • Brownfield land remediation and development

Examples of wastes that have been successfully treated:

  • Slag (from steel manufacture)
  • MSWI ashes (bottom ash and APC residues)
  • Galligu (from soap manufacture)
  • Soils contaminated with pyrotechnics waste
  • Water treatment sludge
  • Quarry fines
  • Dredges
  • Soil washing filter cake

ACT has been applied to develop waste treatment and land remediation solutions for a variety of companies and organisations including:

  • BP and Shell – oil drill cuttings
  • Holton Borough Council – Galligu
  • Cemex, Heidelberg – cement kiln dust
  • DEC dredgings and filter cakes
  • Cleanaway – water treatment sludge
  • Lafarge – steel slag
  • Gallagher Group – quarry fines
  • EoN – APC residues and bed material from CHP plant
  • Buckingham Group – contaminated soil


Recent news stories for Carbon8 Systems

Read about how we’re transforming industrial carbon dioxide emissions

Carbon capture company secures Queen’s Award

Carbon8 Systems, the Kent-based world leader in the permanent capture of carbon dioxide using industrial waste and contaminated soils, has received the Queen’s Award for Enterprise: Innovation 2017...