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Research Centre for Carbon Solutions, Heriot-Watt University
Research Centre for Carbon Solutions, Heriot-Watt University:
Dr James Campbell
Dr Mijndert Van der Spek
Dr Mohammad Madankan
Focusing on NETs relevant to the industrial sector, we will explore how alkaline materials (e.g., lime, cement, and waste slag) can be used to capture atmospheric CO2. This project will specifically:
This is part of a global academic and industrial programme of activity to explore, develop, assess and incentivise NETs, the UK is already world leading in this space from previously funded UKRI programmes. However, this agenda has, until now, been considered in isolation from industrial decarbonisation. The co-development of NETs with industry is essential for their scalable deployment, and for meeting net-zero emission targets.
The map below shows the location of potential resources for alkaline materials in the UK. The materials include silicate waste fines from quarries extracting basic silicate rocks, iron and steel-making slag from current and previous steel works and cement kilns dust (CKD) from currently operating cement kilns or landfilled CKDs.
Over the next few decades mineral carbonation NETs are expected to grow from kilotons of CO2 removed per year, to megatons and eventually gigatons. For a company to receive carbon credits, newly formed carbonate minerals will need to be identified to ensure they are stable, and quantified to ensure the correct number of carbon credits are allocated. This is achieved using common qualitative and quantitative analytical techniques. However, there is a need for a standardized set of approaches to enable companies, and regulators, to precisely and accurately determine the amount of CO2 that has been captured and stored by these alkaline materials. We are working on producing a standardized protocol to fulfil this need. Furthermore, our group will undertake experimentation to quantify rates of CO2 uptake under a range of experimental conditions. We will use these experimental data to create conceptual designs of technologies, and broadly assess the technoeconomics of these approaches. We will also produce a map and database of alkaline materials in the UK to help asses the opportunities for NETs