Metal incorporated biochar as a potential adsorbent for high capacity CO2 capture at ambient condition
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Fe and Al species in inorganic conditioners can act as heterogeneous catalysts during pyrolysis, promoting cracking of macromolecular organic matter, reducing tar formation, and facilitating pore development in biochar.
“Specifically, Fe and Al species in inorganic conditioners can act as heterogeneous catalysts during pyrolysis, promoting the cracking of macromolecular organic matter in sludge, reducing tar formation, and facilitating pore development in biochar.6,7”
From Comparative study on the CO2 capture performance of sludge pyrolysis biochar prepared with different inorganic dehydrating conditioners (2026) · cites this paper as [6]
The Fe-based components introduced by PFS conditioning act as heterogeneous catalysts during cyclic pyrolysis, promoting the cracking of organic matter, inhibiting the formation of dense carbon structures, and increasing carbon defects, thereby providing more physical adsorption sites.
“First, the Fe-based components introduced by PFS conditioning act as heterogeneous catalysts during cyclic pyrolysis, promoting the cracking of organic matter, inhibiting the formation of dense carbon structures, and increasing carbon defects, thereby providing more physical adsorption sites.6,7”
From Comparative study on the CO2 capture performance of sludge pyrolysis biochar prepared with different inorganic dehydrating conditioners (2026) · cites this paper as [6]
Modification by other metals can also increase CO2 adsorption capacity compared with virgin biochar, but may not be as effective as Mg loading.
“Modification by other metals can also increase the adsorption capacity as compared with the virgin biochar, but they may not be as effective as Mg loading.”
From Role of biochar toward carbon neutrality (2023) · cites this paper as Lahijani et al. 2018
For metal-biochar composites, CO2 adsorption capacity follows the order Mg > Al > Fe > Ni > Ca.
“Lahijani et al. (2018) found that the sequence of the adsorption capacity for metal-biochar composites followed the order Mg > Al > Fe > Ni > Ca.”
From Role of biochar toward carbon neutrality (2023) · cites this paper as Lahijani et al. (2018)
CO2 adsorption onto MgO modified biochar is highly reversible.
“ CO 2 adsorption onto MgO modified biochar is also highly reversible (Lahijani et al. 2018).”
From Role of biochar toward carbon neutrality (2023) · cites this paper as Lahijani et al. 2018
Sodium nitrate incorporated into biochar undergoes thermal decomposition at temperatures starting around 550 °C.
“Sodium nitrate (NaNO3) incorporated into biochar undergoes thermal decomposition at temperatures starting around 550 °C.”
From Metals incorporated agricultural waste corn Cob-based biochar used as an adsorbent for CO2 capturing (2025) · cites this paper as [57]
On the surface of the biochar, basic MgO sites are formed by reacting with basic O2− in the O2− Mg2+ linkages, thereby enhancing CO2 adsorption.
“On the surface of the biochar, basic MgO sites are formed by reacting with basic O2− in the O2− Mg2+ linkages, thereby enhancing CO2 adsorption57,61.”
From Metals incorporated agricultural waste corn Cob-based biochar used as an adsorbent for CO2 capturing (2025) · cites this paper as [57]
Sodium nitrate decomposition occurs in two steps: first NaNO3 is converted to NaNO2, then NaNO2 further decomposes into Na2O.
“This decomposition occurs in two steps. First, sodium nitrate (NaNO3) is converted to sodium nitrite (NaNO2), and then sodium nitrite further decomposes into sodium oxide (Na2O).”
From Metals incorporated agricultural waste corn Cob-based biochar used as an adsorbent for CO2 capturing (2025) · cites this paper as [57]
Incomplete conversion affects the chemical properties and adsorption characteristics of the sodium-loaded biochar.
“This incomplete conversion affects the chemical properties and adsorption characteristics of the sodium-loaded biochar57.”
From Metals incorporated agricultural waste corn Cob-based biochar used as an adsorbent for CO2 capturing (2025) · cites this paper as [57]
At temperatures below 550 °C or with short calcination times around 500 °C, the conversion to sodium oxide may be incomplete, resulting primarily in the formation of sodium nitrite rather than sodium oxide on the biochar surface.
“At temperatures below 550 °C or with short calcination times around 500 °C, the conversion to sodium oxide may be incomplete, resulting primarily in the formation of sodium nitrite rather than sodium oxide on the biochar surface.”
From Metals incorporated agricultural waste corn Cob-based biochar used as an adsorbent for CO2 capturing (2025) · cites this paper as [57]
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- Authors
- Lahijani, P., Mohammadi, M., & Mohamed, A. R.
- Affiliations
- Universiti Sains Malaysia (MY)
- Babol Noshirvani University of Technology (IR)
- Corresponding author
- Mohamed, Abdul Rahman
- Venue
- Journal of CO2 Utilization
- Publisher
- Elsevier BV
- Published
- 2018-07
- Volume
- 26
- Pages
- 281-293
- ISSN
- 2212-9820 (ISSN-L)
- OpenAlex
- W2803422351
- Cited by
- 200
- References
- 34
- Citations by year
- 2026: 37 · 2025: 44 · 2024: 28 · 2023: 29 · 2022: 30 · 2021: 13 · 2020: 11 · 2019: 8
- FWCI
- 5.11
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Journal of CO2 Utilization (publishedVersion)
- Funders
- Ministry of Higher Education (MOHE) (203/PJKIMIA/6720009, 304/PJKIMIA/6050376.K100)
- Universiti Sains Malaysia
- 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
- CO2 adsorption, CO2 capture, walnut shell biochar, pyrolysis temperature, physisorption, adsorption kinetics, cycling stability, adsorbent regeneration, microporosity, specific surface area, CO2/N2 selectivity
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