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Updated: May 16, 2026
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A Synthetic Methodology for Preparing Impregnated and Grafted Amine-Based Silica Composites for Carbon Capture
Published on: September 29, 2023
Agar production and potential application in CO2 capture and sequestration.
Yuling Yang1, Siwei Tang2, Wenhao Wu2
1College of Life and Environmental Sciences, Huangshan University, Huangshan, 245021, China; Ocean Decade International Cooperation Center, Qingdao, 266000, China; State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Sciences, Xiamen University, Xiamen, 361005, China.
International Journal of Biological Macromolecules
|May 14, 2026
Summary
Agar from red macroalgae offers significant carbon sequestration potential. This review analyzes agar production, its CO2 capture capabilities, and proposes sustainable utilization for a blue bioeconomy and carbon neutrality.
Area of Science:
- Marine biotechnology and biopolymer applications.
- Sustainable resource management and carbon capture technologies.
Background:
- Agar, a red macroalgae polysaccharide, is vital in food, chemical, and biomedical sectors.
- Current knowledge on agar's production potential and carbon sequestration is fragmented.
Purpose of the Study:
- To comprehensively review agar content in red macroalgae species.
- To analyze agar production trends and global cultivation potential.
- To evaluate agar's application in carbon capture and sequestration (CCS).
Main Methods:
- Systematic review of 43 red macroalgae species and 29 studies on agar content.
- Analysis of global biomass trends for Gracilaria and Gelidium.
- Assessment of theoretical carbon sequestration capacity of agar.
Main Results:
- Agar content varies widely (3.5%-62.3% dry weight) across species and extraction methods.
- Global agar production potential estimated at 61.25 × 10^9 t/yr via seaweed cultivation.
- Theoretical CO2 sequestration potential of agar estimated at 19.29 × 10^9 t/yr.
Conclusions:
- Agar is a promising biopolymer for carbon sequestration and the blue bioeconomy.
- Sustainable utilization models integrating biomedicine and CCS are proposed.
- Further research into agar-based green technologies for CO2 capture is needed.
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