Carbon Capture From Flue Gas and the Atmosphere: A Perspective
Open accessAbstract
Climate change has become a worldwide concern with the rapid rise of the atmospheric Co2 concentration. To mitigate Co2 emissions, the research and development efforts in Co2 capture and separation both from the stationary sources with high Co2 concentrations (e.g., coal-fired power plant flue gas) and directly from the atmosphere have grown significantly. Much progress has been achieved, especially within the last twenty years. In this perspective, we first briefly review the current status of carbon capture technologies including absorption, adsorption, membrane, biological capture, and cryogenic separation, and compare their advantages and disadvantages. Then, we focus mainly on the recent advances in the absorption, adsorption, and membrane technologies. Even though numerous optimizations in materials and processes have been pursued, implementing a single separation process is still quite energy-intensive or costly. To address the challenges, we provide our perspectives on future directions of Co2 capture research and development, that is, the combination of flue gas recycling and hybrid capture system, and one-step integrated Co2 capture and conversion system, as they have the potential to overcome the technical bottlenecks of single capture technologies, offering significant improvement in energy efficiency and cost-effectiveness.
Integrity signals
Registry
Cites
Statistics
Claims the paper makes
Claims other papers make about this one
Each is checked against this paper’s own text: does it say what the citing paper says it does?
Postcombustion flue gases have composition mainly N2 (70-75%), CO2 (3-30%), H2O (5-7%), residual O2 (3-4%), with minor CO and nitrogen and sulfur oxides.
“The composition of this stream is mainly N2 (70–75%), CO2 (3–30%), H2O (5–7%), and residual O2 (3–4%), with minor amounts of CO and nitrogen and sulfur oxides.368,471,472”
From Zeolites in Adsorption Processes: State of the Art and Future Prospects (2022) · cites this paper as [472]
Promising technologies for CCS from postcombustion streams include chemical looping, adsorption, and membrane processes, but these need to be improved to allow wider deployment.
“Apart from the already mature aqueous amine absorption technology for CCS, promising technologies for CCS from postcombustion streams include chemical looping, adsorption, and membrane processes, but these need to be improved in order to allow for wider deployment of CCS processes.472,527,528,542”
From Zeolites in Adsorption Processes: State of the Art and Future Prospects (2022) · cites this paper as [472]
Postcombustion carbon capture deals with separation of CO2 from flue gases containing 3-30% CO2, rest N2, residual O2 and water, and total pressure close to atmospheric pressure.
“Postcombustion carbon capture deals with the separation of CO2 from flue gases containing 3–30% of CO2, the rest being N2, residual O2 and water, and a total pressure close to atmospheric pressure.368,472”
From Zeolites in Adsorption Processes: State of the Art and Future Prospects (2022) · cites this paper as [472]
Techniques involving high interaction energies (formation of chemical bonds), such as chemical absorption and adsorption, are needed to capture CO2 from air, and subsequently a large energy input is needed for its recovery, which renders DAC a controversial approach.
“In fact, techniques involving high interaction energies (formation of chemical bonds), such as chemical absorption and adsorption, are needed to capture CO2 from air and subsequently, a large energy input is needed for its recovery, which renders DAC a controversial approach.472,535”
From Zeolites in Adsorption Processes: State of the Art and Future Prospects (2022) · cites this paper as [472]
Direct air capture (DAC) is still under development due to difficulty of separating CO2 from an ultradilute source.
“Direct air capture (DAC) is still under development, due to the difficulty of separating CO2 from an ultradilute source.5,472,533,534”
From Zeolites in Adsorption Processes: State of the Art and Future Prospects (2022) · cites this paper as [472]
Taking into account typical postcombustion stream conditions (PCO2 ≈ 0.15 bar, Ptot ≈ 1 bar, 25 °C ≥ T ≤ 100 °C), 13X is relatively adequate for this application.
“Taking into account the conditions of a typical postcombustion stream (PCO2 ≈ 0.15 bar, Ptot ≈ 1 bar, 25 °C ≥ T ≤ 100 °C368,472,473), it is not surprising that 13X is relatively adequate for this application.”
From Zeolites in Adsorption Processes: State of the Art and Future Prospects (2022) · cites this paper as [472]
No citation lists for this paper
No citation lists for this paper yet — checked again daily.
References 307 · Cited by 428
- Authors
- Wang, X., & Song, C.
- Affiliations
- Pennsylvania State University (US)
- Corresponding author
- Wang, Xiaoxing
- Song, Chunshan
- Venue
- Frontiers in Energy Research
- Publisher
- Frontiers Media SA
- Published
- 2020-12-15
- Volume
- 8
- ISSN
- 2296-598X (ISSN-L)
- OpenAlex
- W3111246634
- Cited by
- 428
- References
- 307
- Citations by year
- 2026: 80 · 2025: 87 · 2024: 96 · 2023: 92 · 2022: 54 · 2021: 19
- FWCI
- 20.29
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Licence
- Locations
- Frontiers in Energy Research (publishedVersion, cc-by)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
- Funders
- Pennsylvania State University
- Topics
- Physical Sciences › Engineering › Mechanical Engineering › Carbon Dioxide Capture Technologies
- Physical Sciences › Environmental Science › Environmental Engineering › CO2 Sequestration and Geologic Interactions
- Physical Sciences › Engineering › Mechanical Engineering › Industrial Gas Emission Control
- Keywords
- CO2 capture, flue gas, direct air capture, CO2 absorption, CO2 adsorption, membrane separation, cryogenic separation, flue gas recirculation, CO2 conversion, energy efficiency, cost-effectiveness, climate change mitigation
About these checks
Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
Statistics and arithmetic are recomputed, not judged.
Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
What counts as a claim ›How we measure confidence ›How we check this ›
Are you an author, or do you see a problem with this page? Request a review
