A series of fortuitous events: Capture of carbon dioxide by milling of silicate minerals

Activity: Talk or presentation typesInvited talk


Invited talk at The Royal Scottish Society of Arts
Milling minerals rich in magnesium and iron within CO2 gas has been proposed to capture carbon as metal-carbonates. Through a series of fortuitous events, we discovered that not only are rocks much better than trapping CO2 than individual minerals, but that this process can occur on all common silicate minerals. Polymineralic rocks are crushed worldwide to produce construction aggregate. If crushing processes could be conducted within a stream of effluent CO2 gas (such as produced from cement manufacture) our findings suggest that for every 100 Mt of hard rock aggregate sold, 0.4-0.5 MtCO2 could be captured as a by-product.
Period29 Jan 2024
Held atThe Royal Scottish Society of Arts, United Kingdom
Degree of RecognitionRegional