Leeds Carbon Mineralization

Converting CO₂ emissions into solid building materials through accelerated carbonation

The Leeds project operated by O.C.O Technology Limited is a key component of their carbon capture and utilization initiatives, focusing on the production of carbonated building materials for sustainable construction applications. Located at Hub 45, 37 Knowsthorpe Gate, Leeds, UK LS9 0NP, the Leeds facility plays a pivotal role in converting CO₂ emissions into solid building materials through accelerated carbonation technology.

At the Leeds facility, CO₂ is used to treat various waste materials via Accelerated Carbonation Technology (ACT). This process involves reacting CO₂ with alkali earth hydroxides and silicates to produce lightweight carbonated aggregate suitable for construction purposes. The aggregate meets EN13242 and EN13055 requirements, ensuring high-quality and environmentally friendly construction materials.

The manufacturing process at the Leeds project includes blending different thermal residues, conditioning them with water, and exposing them to an elevated concentration of CO₂ to accelerate the carbonation process. This results in the production of carbonated aggregate with a verified carbon content of 144 kg of CO₂ per tonne of aggregate product. Compliance assessments, permits, and verification activities are conducted in alignment with the Puro Standard General Rules and Carbonated Building Material Methodology to uphold environmental standards.

The Leeds project exemplifies O.C.O Technology Limited's dedication to sustainable carbon removal practices and innovative solutions for carbon capture and utilization. By converting CO₂ emissions into valuable building materials, the Leeds facility contributes to reducing carbon footprints in the construction industry and advancing the transition towards a more sustainable and environmentally conscious future.

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Project location

Technology and mechanism

Carbonated Materials
Manufactured carbonated materials that remove more CO₂ than the production emits.
Mechanism
Removal
Durability
Permanence: 1000+ years
The durability of this project is 1,000 years, as assessed by puro.earth.

Project certifications

Patch requires all projects on the marketplace to have its methodology, project design, and outcomes verified by an approved third party. For more on our project vetting and onboarding process, review our Trust and Safety Framework.

Certifier

Standard

Registry ID

Crediting period term

Sep 01, 2021 - Sep 30, 2022

Project methodology

Updated May 01, 2023

Current verifier of project outcomes

350Solutions

Project details

Emissions reduced or carbon removed on an annual basis
20,000 tonnes
How the project approaches risk of reversal
The CO₂ removal results from the chemical binding of CO₂ into the M-LS product. More precisely, CO₂ removal is achieved through carbonation, which is a chemical reaction between CO₂ and metal hydroxides or oxides (e.g., CaOH, MgOH, CaO, MgO) in the presence of water, leading to the formation of ionic carbonate minerals (e.g., CaCO₃, MgCO₃). The CO₂ Removal is considered permanent, with very unlikely risk of reversal due to the above-stated chemical process.
What actions would be taken by the project developer if anticipated emissions reductions do not take place, or if carbon removal is reversed in the future?
This is not applicable to this project type.
What calculation methods are used to independently reproduce and verify the carbon impact of the project?
Please refer to section 5 of the methodology document.
Citation: Methodology
United Nations Sustainable Development Goals
Quality Education
Ensure inclusive and equitable quality education and promote lifelong learning opportunities for all
Gender Equality
Achieve gender equality and empower all women and girls
Clean Water and Sanitation
Ensure availability and sustainable management of water and sanitation for all
Decent Work and Economic Growth
Promote sustained, inclusive and sustainable economic growth, full and productive employment and decent work for all
Industry, Innovation and Infrastructure
Build resilient infrastructure, promote inclusive and sustainable industrialization and foster innovation
Reduce Inequality
Reduce inequality within and among countries
Responsible Consumption and Production
Ensure sustainable consumption and production patterns
Climate Action
Take urgent action to combat climate change and its impacts

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