Cited by 201Carbon Dioxide Capture TechnologiesThermochemical Biomass Conversion ProcessesAdsorption and biosorption for pollutant removal

Recent advances in biochar-based adsorbents for CO2 capture

Open access
Guo, Shifang, Li, Yuqing, Wang, Yaru, Wang, Linna, Sun, Yifei, Liu, Lina·2022·Carbon Capture Science & Technology

Abstract

The global industrialization accelerates the use of fossil fuels and hence the excessive emissions of greenhouse gasses, especially carbon dioxide (CO2), which poses a serious threat to the ecological environment. CO2 capture is considered as a potential strategy to reduce the amount of CO2 released into the atmosphere. The development of adsorption materials that are both economically feasible and effective is the most critical issue. Biochar is a promising candidate for CO2 capture among the capture materials. It offers a diverse range of raw materials and a lower environmental impact than other adsorbent materials. Even though pristine biochar could be employed directly to CO2 capture, it generally exhibits a poor adsorption performance. Therefore, biochar needs to be modified in practical applications to improve physicochemical properties such as specific surface area, pore structure, and surface functional groups. This paper summaries recent research advances in biochar-based adsorbents for CO2 adsorption. Pre-combustion capture technology and post-combustion capture technology are investigated. The production of biochar and the influence of raw materials and process conditions on the adsorption capacity of CO2 are described in detail. The mechanism of CO2 adsorption on biochar is also discussed, which summarized physical and chemical adsorption, respectively, as well as the corresponding presentation of some current methods of physical/chemical modification of biochar. Finally, the future prospects are proposed in order to provide a guideline for the adsorption of CO2 by biochar. Despite the progress made in the production of biochar for CO2 adsorption, more efforts are needed to produce biochar with higher adsorption capacity and long-term stability for large-scale CO2 capture.

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Crossref · 10.1016/j.ccst.2022.100059

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  • The adsorption capacity of zeolites decreases significantly at 30 °C.

    “The adsorption capacity of zeolites decreases significantly at 30 °C, despite their enhanced stability and suitability for gas adsorption.”

    From Metals incorporated agricultural waste corn Cob-based biochar used as an adsorbent for CO2 capturing (2025) · cites this paper as [21]

    The Introduction (page unavailable) says zeolites’ adsorption capacity decreases rapidly once the temperature is higher than 30 °C. That supports a decline above 30 °C, but not the claim that it decreases significantly at 30 °C. (LLM, conf=0.88)

    Experimental — accuracy not yet measured
  • Numerous studies have been conducted to improve the physical and chemical properties of raw biochar through various modification processes, resulting in modified biochar that significantly improves its adsorption capacity.

    “Numerous studies have been conducted to improve the physical and chemical properties of raw biochar through various modification processes21, resulting in the creation of modified biochar that significantly improves its adsorption capacity.”
  • Zeolites require a high regeneration temperature.

    “A high regeneration temperature is required to support the energy-intensive regeneration process20,21.”
  • The primary constituents of biochar are carbon, hydrogen, oxygen, and nitrogen, with carbon making up more than 40% of the total elemental composition.

    “The primary constituents of biochar are carbon, hydrogen, oxygen, and nitrogen, with carbon making up more than 40% of the total elemental composition21.”

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Cites

1 retracted

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Research works printed but not linked: 2

  1. You, S., et al., 2017b. A critical review on sustainable biochar system through gasification: energy and environmental applications. Bioresour. Technol. 246, 242-253 .
  2. Creamer, A.E., Gao, B., 2016. Carbon-based adsorbents for postcombustion co2 capture: a critical review. Environ. Sci. Technol. 50, 7276-7289 .

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Authors
Guo, S., Li, Y., Wang, Y., Wang, L., Sun, Y., & Liu, L.
Affiliations
  • Nankai University (CN)
  • Beihang University (CN)
Corresponding author
  • Sun, Yifei
  • Liu, Lina
Venue
Carbon Capture Science & Technology
Publisher
Elsevier BV
Published
2022-09
Volume
4
Pages
100059
ISSN
2772-6568 (ISSN-L)
OpenAlex
W4285405596
Cited by
201
References
211
Citations by year
2026: 35 · 2025: 74 · 2024: 58 · 2023: 29 · 2022: 5
FWCI
15.65
Type
journal article
Language
en
Open access
Locations
  • Carbon Capture Science & Technology (publishedVersion, cc-by-nc-nd)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
National Natural Science Foundation of China (21976011, 22006075)
Topics
  • Physical Sciences › Engineering › Mechanical Engineering › Carbon Dioxide Capture Technologies
  • Physical Sciences › Engineering › Biomedical Engineering › Thermochemical Biomass Conversion Processes
  • Physical Sciences › Environmental Science › Water Science and Technology › Adsorption and biosorption for pollutant removal
Keywords
biochar, CO2 capture, CO2 adsorption, biochar modification, pre-combustion capture, post-combustion CO2 capture, adsorption mechanism, physisorption, chemisorption, biochar production, surface functional groups, adsorption capacity, long-term stability

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