The total energy and CO2 emissions of a mineral carbonation process are investigated using a life cycle assessment (LCA). The LCA investigation takes into account the energy and greenhouse gas emissions from mineral mining operations and shipment from Australia, the recovery of CO2 based on amine scrubbing technology (if required), and two possible options for mineral carbonation in Singapore where the final carbonate products have potential use in the construction industry and as land reclamation material. Four scenarios were investigated – the first two with CO2 recovery via amine scrubbing prior to mineralization and the last two with direct mineralization of CO2 from the NGCC flue gas. The most promising options turned out to be scenarios 3 and 4 – these cases result in 215 and 154 kg of CO2 avoided per 1 MWh, respectively. Scenario 1 results in 90 kg of CO2 avoided per 1 MWh. The life cycle costing results are 70.6–80.8 USD/tonne CO2 avoided for scenario 3 and 119.9–159.1 USD/tonne CO2 avoided for scenario 4.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.