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Objective <p>This study focuses on carbon capture technologies in the cement industry. Currently, these technologies face multiple issues, such as a lack of optimization research, absence of comprehensive effects with other technologies, and a low penetration rate. The aim is to evaluate the environmental feasibility of implementing CO₂ capture and purification in the cement industry and investigate their efficiencies.</p> Methods <p>The study uses modular cement production processes and incorporates actual equipment-manufacturing data from medium-sized factories. Additionally, a life cycle assessment (LCA) method is employed. From a modular perspective, optimized combinations are dissected to determine their contributions to carbon reduction.</p> Results <p>Four carbon capture technologies prove effective in alleviating greenhouse gas emissions. The four scenarios can reduce CO₂ emissions by 5.63%, 2.46%, 44.78%, and 42.74%, respectively, with the degree of purification variation inversely affecting capture rates. The traditional environmental impositions in cement production come from ore resource depletion and power consumption. The optimized modular combinations can reduce GWP100 by 67.00%, 63.00%, and 70.00%, respectively, enhancing carbon capture proficiency.</p> Conclusions <p>The optimized combinations can synergize alternative fuel and alternative clinker reduction channels. These methods could generate surplus carbon emission credits of about 0.21 Gt, 0.20 Gt, and 0.22 Gt (compared to the 0.5 Gt predicted by the IEA for 2050), which is conducive to achieving the goal of limiting global warming to 1.5&#xa0;°C.</p> Graphical Abstract <p></p>

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Life cycle assessment of cement industry with CO2 capture and purification: environmental feasibility and synergistic emission reduction

  • 期刊论文

  • 发表日期：

    2025年6月24日

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  • Qingchuan Zhao,
  • Lin Huang,
  • Wenjing Zong,
  • Yueling Zhang

摘要

Objective

This study focuses on carbon capture technologies in the cement industry. Currently, these technologies face multiple issues, such as a lack of optimization research, absence of comprehensive effects with other technologies, and a low penetration rate. The aim is to evaluate the environmental feasibility of implementing CO₂ capture and purification in the cement industry and investigate their efficiencies.

Methods

The study uses modular cement production processes and incorporates actual equipment-manufacturing data from medium-sized factories. Additionally, a life cycle assessment (LCA) method is employed. From a modular perspective, optimized combinations are dissected to determine their contributions to carbon reduction.

Results

Four carbon capture technologies prove effective in alleviating greenhouse gas emissions. The four scenarios can reduce CO₂ emissions by 5.63%, 2.46%, 44.78%, and 42.74%, respectively, with the degree of purification variation inversely affecting capture rates. The traditional environmental impositions in cement production come from ore resource depletion and power consumption. The optimized modular combinations can reduce GWP100 by 67.00%, 63.00%, and 70.00%, respectively, enhancing carbon capture proficiency.

Conclusions

The optimized combinations can synergize alternative fuel and alternative clinker reduction channels. These methods could generate surplus carbon emission credits of about 0.21 Gt, 0.20 Gt, and 0.22 Gt (compared to the 0.5 Gt predicted by the IEA for 2050), which is conducive to achieving the goal of limiting global warming to 1.5 °C.

Graphical Abstract