We are experts in the application of Accelerated Carbonation Technology (ACT) for carbon capture.

ACT is a genuine Carbon Capture and utilisation (CCU) process. Carbon dioxide is permanently captured as stable carbonate minerals.

Very little energy is required for the process, which relies upon the reactivity of the waste material. Many wastes are naturally reactive with carbon dioxide in the presence of water. If the conditions are carefully controlled, this natural reaction can be accelerated, taking place in minutes rather than years and resulting in the formation of calcium carbonate (manufactured limestone).

Water acts as a solvent, allowing CO₂ and calcium ions to readily react. The reaction forms a solid carbonate precipitate.

1000
Reactive
Waste
+
4000
Water
+
4000
Carbon
Dioxide
4000
Calcium
Carbonate

ACT has been demonstrated utilising a variety of gas sources. O.C.O is actively developing direct-from-flue-gas capture.

ACT is an effective process to treat and stabilise waste. See our Waste Treatment page.

ACT can also valorise wastes into sustainable products such as our carbon negative M-LS aggregate. See our Sustainable Construction Products.

O.C.O Latest Releases
Change of role for Stephen Roscoe Read more
O.C.O Technology – Over 10 years of sustainability excellence Read more
O.C.O Technology makes it a winning double with twin top honours from RoSPA Read more
Recertification Success for ISO45001, 9001 and 14001 Read more
O.C.O Technology signs multi-million-pound APCr recycling deal with Covanta Read more
Happy 10th Birthday to our Brandon Plant! Read more
We are delighted to welcome two new Site Managers to the O.C.O team and announce the appointment of Paul Barber to General Manager – Operations Read more
Real Living Wage Employer looking for new team members Read more
Concrete tech – carbon rocks! O.C.O Technology features in BNP Paribas Exane Report Read more
O.C.O Technology trials first overseas CO2 treatment facility at Japanese EfW plant Read more
O.C.O Technology gains EPD for its carbon negative aggregate Read more
O.C.O’s carbon negative aggregate at the heart of climate change statue Read more
More recognition for O.C.O’s Focus on You Campaign Read more
O.C.O named as finalist in APT Award Read more
O.C.O welcomes new H&S Assistant Read more
Achilles Audit Success Read more
New O.C.O Technology partnership will see first carbon negative aggregate plant built in Europe by 2024 Read more
O.C.O Technology gains an ‘excellent’ rating in BES 6001 accreditation Read more
Carbon negative aggregate proves an award winner Read more
O.C.O Technology smashes through the half a million tonnes APCr milestone Read more
See more news items
O.C.O Technology

Built on more than 20 years of award-winning research, Accelerated Carbonation Technology has helped make us a world leader in the permanent capture of carbon dioxide.

Read more