Work

Mechanochemical Activation of Argon Oxygen Decarburization Slags for Improved Mineral Carbonation

Year: 2025

Type: article

Abstract: Inspired by the growing need for carbon mitigation strategies, this work investigates mechanochemical activation of argon oxygen decarburization (AOD) slag for CO2 sequestration. It explores three process modes: concurrent, sequential, and staged planetary ball milling and carbonation. Results showed carbonation uptake reached 70 % of the theoretical maximum with ball milling (0.39 g CO2/g AOD slag) versus 0.17 g CO2/g AOD slag without ball milling. The concurrent process resulted in the fastest rate and uptake. Particle agglomeration was confirmed via particle size analysis and electron microscopy, and non‐reactive mineral phases were identified through quantitative X‐ray diffraction, explaining incomplete carbonation conversion.

Source: Chemical Engineering & Technology

DOI: 10.1002/ceat.12004

Authors: Luka Ceyssens, Nina Miladinović, Giuseppe Granata, Tom Van Gerven

Institution: KU Leuven

Language: English

Topic: CO2 Sequestration and Geologic Interactions

Subfield: Environmental Engineering

Field: Environmental Science

Domain: Physical Sciences

SDGs: Responsible consumption and production, Climate action

Open Access status: bronze

Funders: Fonds Wetenschappelijk Onderzoek, Vlaamse regering