Functional Biochar Synergistic Solid/Liquid-Phase CO2 Capture: A Review
Abstract
Nowadays, global warming is becoming more and more serious, while CO 2 capture technologies have emerged endlessly, with methods of solid-phase CO 2 capture for physical adsorption and liquid-phase CO 2 capture for chemical absorption. Biochar has been widely used to achieve CO 2 sequestration and emission reduction as a result of its wide range of precursor sources, strong adsorption, and rich surface functional groups. It reviews the existing post-combustion CO 2 capture solutions, focusing on the analysis of CO 2 capture technologies based on liquid-phase ammonia/monoethanolamine and solid-phase carbon-based materials. The former (liquid phase) is with limitation of capture efficiency as a result of strong volatility and thermal degradation, while the latter (solid phase) is accompanied by limited CO 2 /N 2 selectivity. The realization of synergy between the two would “learn from each other’s strengths” to improve the CO 2 adsorption ability. The review puts forward the concept of “biochar-functionalized cross-linking synergistic ammonia CO 2 capture technology”, which not only broadens the idea of multi-level utilization of biochar, significantly improving the liquid-phase (ammonia) CO 2 capture efficiency, but also has practical significance for the utilization of biomass waste and reduction of CO 2 emissions.
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Micropores play a more significant role than macropores and mesopores in CO2 adsorption because micropores enable stronger van der Waals force between CO2 molecules and biochar.
“When it comes to CO 2 adsorption, micropores play a more significant role than macropores and mesopores. This is because micropores enable stronger van der Waals force between CO2 molecules and biochar (Zhang et al. 2022d).”
From Lignin-impregnated biochar assisted with microwave irradiation for CO2 capture: adsorption performance and mechanism (2024) · cites this paper as Zhang et al. 2022d
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- Authors
- Zhang, Y., Wang, S., Feng, D., Gao, J., Dong, L., Zhao, Y., Sun, S., Huang, Y., & Qin, Y.
- Affiliations
- Harbin Institute of Technology (CN)
- Corresponding author
- Feng, Dongdong
- ORCID
- Venue
- Energy & Fuels
- Publisher
- American Chemical Society (ACS)
- Published
- 2022-02-23
- Volume
- 36
- Issue
- 6
- Pages
- 2945-2970
- ISSN
- 0887-0624 (ISSN-L)
- 1520-5029
- OpenAlex
- W4229009504
- Cited by
- 91
- References
- 8
- Citations by year
- 2026: 15 · 2025: 14 · 2024: 19 · 2023: 25 · 2022: 18
- FWCI
- 7.17
- Type
- journal article
- Language
- en
- Open access
- closed
- Licence
- Locations
- Energy & Fuels (publishedVersion)
- Funders
- Ministry of Education of the People's Republic of China (FRFCU5710051521)
- China Postdoctoral Science Foundation (2020M670908)
- Heilongjiang Provincial Postdoctoral Science Foundation (LBH-Z19151)
- National Natural Science Foundation of China (52006047)
- Foundation of State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering (2021-K05)
- Topics
- Physical Sciences › Engineering › Mechanical Engineering › Carbon Dioxide Capture Technologies
- Physical Sciences › Engineering › Mechanical Engineering › Industrial Gas Emission Control
- Physical Sciences › Environmental Science › Environmental Engineering › CO2 Sequestration and Geologic Interactions
- Keywords
- biochar, CO2 capture, post-combustion carbon capture, monoethanolamine, solid-phase adsorption, crosslinking, CO2/N2 selectivity, biomass waste utilization, CO2 emission reduction, surface functional groups
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