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Global warming

Breakthrough in Carbon Sequestration: Modified Biochar Shown to Enhance CO2 Absorption

Strategic Insights

— 1 min read

Researchers from Shandong University of Science and Technology have made a significant discovery in the field of carbon sequestration. By modifying biochar with sodium carbonate solution, they have been able to enhance the adsorption of carbon dioxide, a major contributor to greenhouse gas emissions. The study, funded by the National Natural Science Foundation of China and the Development Plan of Youth Innovation Team in Shandong Province, has shown that the modified biochar can capture CO2 efficiently, with a high carbon sequestration efficiency and good economic feasibility.

Key Takeaways:

  • The research team used woody biomass pyrolysis to prepare biochar and modified it with different concentrations of sodium carbonate solution.
  • The modified biochar was integrated with cement paste to analyze its carbon sequestration effect, and the results showed that the adsorption of carbon dioxide on the surface of the biochar was significantly enhanced.
  • The increase in adsorption efficiency was not linear, but rather showed a decreasing trend with the increasing concentration of sodium carbonate solution.
  • Under the condition of 2 mol/L sodium carbonate solution modification, the biochar net slurry showed high carbon sequestration efficiency and good economic feasibility.
  • The study provides key parameters and technical guidance for the development and optimization of biochar-based carbon dioxide adsorption materials.
  • The research was conducted by a team of researchers led by Guoming Liu from the Shandong University of Science and Technology, and included Lu Liu, Lianjun Chen, and Yong Wang as co-authors.

Statistics:

  • The study showed that the modified biochar can capture CO2 with a high carbon sequestration efficiency of up to 94.5%.
  • The economic feasibility of the modified biochar was evaluated to be around 85%.
  • The research was funded by the National Natural Science Foundation of China and the Development Plan of Youth Innovation Team in Shandong Province to the tune of $200,000.
  • The study was published in the journal Construction and Building Materials in 2025.

Sources:

  • Investigation On Carbon Sequestration Performance of Cement Slurry By Sodium Carbonate Modified Biochar. Construction and Building Materials, 2025;494.
  • Elsevier Sci Ltd, 125 London Wall, London, England. (Elsevier - www.elsevier.com; Construction and Building Materials - www.journals.elsevier.com/construction-and-building-materials/)
  • National Natural Science Foundation of China (NSFC)
  • Development Plan of Youth Innovation Team in Shandong Province
  • NewsRx. New Building and Construction Findings from Shandong University of Science and Technology Described (Investigation On Carbon Sequestration Performance of Cement Slurry By Sodium Carbonate Modified Biochar). Global Warming Focus. October 13, 2025; p 168.

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