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<p>Advances in carbon capture and storage (CCS) technologies are being increasingly pursued as a means of diminishing the impact of anthropogenic CO<sub>2</sub> emissions. Mineral carbonation (MC) offers a promising approach to CO<sub>2</sub> mitigation by converting CO<sub>2</sub> into stable carbonates using natural minerals like basalt. This study investigates the feasibility of carbonation of Segamat basalt, focusing on the transition from gas-solid to aqueous phase under low reaction conditions. A comprehensive experimental approach evaluated the impact of particle size, temperature, reaction duration, liquid-to-solid ratio, and salinity on the carbonation efficiency of each metal oxide and overall CO<sub>2</sub> uptake. The results indicated that significant carbonation up to 71% for calcium can still be achieved with larger particle sizes, low temperatures, and low mechanical activation in the presence of adequate saline water. This finding implies the feasibility of industrial-scale MC with reduced energy consumption. By utilizing basalt feedstock as a plenteous and reachable natural resource, this research provides valuable insights into optimizing ex-situ MC processes and contributes to sustainable CO<sub>2</sub> sequestration strategies.</p>

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Carbon capture and storage (CCS): CO2 basaltic mineralization through the phase transition from gas-solid to aqueous under low reaction kinetics

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年8月2日

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  • Amir Hossein Mazaheri,
  • Mohd Ridha Muhamad,
  • Muhammad Khairi Faiz,
  • Farazila Yusof,
  • Meor Faisal Zulkifli,
  • Zahiruddin Fitri Abu Hassan,
  • Hijaz Kamal Hasnan,
  • Omeid Rahmani,
  • Asefeh Asemi

摘要

Advances in carbon capture and storage (CCS) technologies are being increasingly pursued as a means of diminishing the impact of anthropogenic CO2 emissions. Mineral carbonation (MC) offers a promising approach to CO2 mitigation by converting CO2 into stable carbonates using natural minerals like basalt. This study investigates the feasibility of carbonation of Segamat basalt, focusing on the transition from gas-solid to aqueous phase under low reaction conditions. A comprehensive experimental approach evaluated the impact of particle size, temperature, reaction duration, liquid-to-solid ratio, and salinity on the carbonation efficiency of each metal oxide and overall CO2 uptake. The results indicated that significant carbonation up to 71% for calcium can still be achieved with larger particle sizes, low temperatures, and low mechanical activation in the presence of adequate saline water. This finding implies the feasibility of industrial-scale MC with reduced energy consumption. By utilizing basalt feedstock as a plenteous and reachable natural resource, this research provides valuable insights into optimizing ex-situ MC processes and contributes to sustainable CO2 sequestration strategies.