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Comprehensive Characterization of Carbonaceous Material Derived from Rice Husk Pyrolysis and Its Potential for CO 2 Adsorption.

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Title: Comprehensive Characterization of Carbonaceous Material Derived from Rice Husk Pyrolysis and Its Potential for CO 2 Adsorption.
Authors: Mesa, Santiago1 (AUTHOR) alba.manrique@udea.edu.co, Castro-Ladino, Javier Ricardo2 (AUTHOR), Amaya, Sandra Liliana3 (AUTHOR), Manrique, Cecilia1 (AUTHOR), Echavarría, Adriana1,2 (AUTHOR), Hoyos-Ayala, Dora A.1,3 (AUTHOR), Uran, Laura1 (AUTHOR) laura.uran@udea.edu.co
Source: Materials (1996-1944). Nov2025, Vol. 18 Issue 22, p5151. 16p.
Subjects: Carbon dioxide adsorption, Functional groups, Adsorption isotherms, Surface area, Pyrolysis, Microporosity, Langmuir isotherms, Carbon-based materials
Abstract: In this study, a carbonaceous material was obtained from the thermal decomposition of a non-pretreated rice husk in a pyrolysis system with controlled nitrogen at 700, 800, 900, and 1000 °C. The characterization of the material was performed using various analytical techniques. The results of these characterizations indicate that the obtained carbonaceous material can achieve a surface area of 450 m2/g, with a microporous volume of 0.15 cm3/g. Furthermore, the presence of oxygenated function groups, predominantly hydroxyl (C-OH) and epoxy (C-O-C), along with amorphous silicon, was identified. Additionally, the material's CO2 adsorption capacity was assessed, revealing a maximum capacity of 1.0 mmol/g. The findings of this study suggest that the CO2 adsorption effectiveness can be impacted by the presence of specific functional groups. These groups have been shown to enhance the material's affinity for CO2, along with its porosity and surface area. In this sense, a notable correlation was identified between the oxygenated function group content and CO2 adsorption capacity. Also, the adsorption isotherm modeling showed an excellent fit to the Langmuir model, indicating monolayer adsorption on a homogeneous surface. [ABSTRACT FROM AUTHOR]
Copyright of Materials (1996-1944) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Comprehensive Characterization of Carbonaceous Material Derived from Rice Husk Pyrolysis and Its Potential for CO 2 Adsorption.
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  Data: <searchLink fieldCode="JN" term="%22Materials+%281996-1944%29%22">Materials (1996-1944)</searchLink>. Nov2025, Vol. 18 Issue 22, p5151. 16p.
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  Data: In this study, a carbonaceous material was obtained from the thermal decomposition of a non-pretreated rice husk in a pyrolysis system with controlled nitrogen at 700, 800, 900, and 1000 °C. The characterization of the material was performed using various analytical techniques. The results of these characterizations indicate that the obtained carbonaceous material can achieve a surface area of 450 m2/g, with a microporous volume of 0.15 cm3/g. Furthermore, the presence of oxygenated function groups, predominantly hydroxyl (C-OH) and epoxy (C-O-C), along with amorphous silicon, was identified. Additionally, the material's CO2 adsorption capacity was assessed, revealing a maximum capacity of 1.0 mmol/g. The findings of this study suggest that the CO2 adsorption effectiveness can be impacted by the presence of specific functional groups. These groups have been shown to enhance the material's affinity for CO2, along with its porosity and surface area. In this sense, a notable correlation was identified between the oxygenated function group content and CO2 adsorption capacity. Also, the adsorption isotherm modeling showed an excellent fit to the Langmuir model, indicating monolayer adsorption on a homogeneous surface. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
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  Data: <i>Copyright of Materials (1996-1944) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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      – SubjectFull: Adsorption isotherms
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              Text: Nov2025
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