Evaluation of the Silica Gel Adsorbent Potential for Carbon Dioxide Capture: Experimental and Modeling
In this research, silica gel as a low-cost adsorbent for the uptake of carbon dioxide was investigated experimentally. The samples were characterized by XRD, BET and FT-IR. It shows that as pressure was increased from 2 to 8 bar, the CO2 adsorption capability improved over time. At a pressure of 6 b...
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Iranian Association of Chemical Engineering (IAChE)
2021-12-01
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| Series: | Iranian Journal of Chemical Engineering |
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| Online Access: | https://www.ijche.com/article_154280_cb95c58cc957bda505bf9b5075a24155.pdf |
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| author | Zohreh khoshraftar Ahad Ghaemi Hossein Mashhadimoslem |
| author_facet | Zohreh khoshraftar Ahad Ghaemi Hossein Mashhadimoslem |
| author_sort | Zohreh khoshraftar |
| collection | DOAJ |
| description | In this research, silica gel as a low-cost adsorbent for the uptake of carbon dioxide was investigated experimentally. The samples were characterized by XRD, BET and FT-IR. It shows that as pressure was increased from 2 to 8 bar, the CO2 adsorption capability improved over time. At a pressure of 6 bar and a dose of 1 g of silica gel, the impact of temperature (25, 45, 65, and 85 °C) on the CO2 adsorption capacity (mg/g) was determined. The process behavior was investigated using isotherm, kinetics and thermodynamic models. As the temperature rises at a constant pressure, the adsorption capacity decreases. The experimental data of the carbon dioxide adsorption using silica gel have a high correlation coefficient with both Langmuir (0.998) and Freundlich (0.999) models. The results of the carbon dioxide adsorption kinetics with the silica gel adsorbent show that the correlation coefficient (R2) of the second-order model and Ritchie's second model are equal to 0.995 and have the highest value. The total pore volume was 0.005119 (cm3 g-1) and the specific surface area was 2.1723 (m2g−1). The maximum CO2 adsorption capacity at 25 °C near 8 bar was 195.8 mg/g. |
| format | Article |
| id | doaj-art-96c806cbbae84094bc40ca680e7aab0a |
| institution | OA Journals |
| issn | 1735-5397 2008-2355 |
| language | English |
| publishDate | 2021-12-01 |
| publisher | Iranian Association of Chemical Engineering (IAChE) |
| record_format | Article |
| series | Iranian Journal of Chemical Engineering |
| spelling | doaj-art-96c806cbbae84094bc40ca680e7aab0a2025-08-20T02:18:43ZengIranian Association of Chemical Engineering (IAChE)Iranian Journal of Chemical Engineering1735-53972008-23552021-12-01184648010.22034/ijche.2022.335792.1425154280Evaluation of the Silica Gel Adsorbent Potential for Carbon Dioxide Capture: Experimental and ModelingZohreh khoshraftar0Ahad Ghaemi1Hossein Mashhadimoslem2Iran university of science and technologychemical Engineering Department, Iran University of Science and TechnologyIran university of science and technologyIn this research, silica gel as a low-cost adsorbent for the uptake of carbon dioxide was investigated experimentally. The samples were characterized by XRD, BET and FT-IR. It shows that as pressure was increased from 2 to 8 bar, the CO2 adsorption capability improved over time. At a pressure of 6 bar and a dose of 1 g of silica gel, the impact of temperature (25, 45, 65, and 85 °C) on the CO2 adsorption capacity (mg/g) was determined. The process behavior was investigated using isotherm, kinetics and thermodynamic models. As the temperature rises at a constant pressure, the adsorption capacity decreases. The experimental data of the carbon dioxide adsorption using silica gel have a high correlation coefficient with both Langmuir (0.998) and Freundlich (0.999) models. The results of the carbon dioxide adsorption kinetics with the silica gel adsorbent show that the correlation coefficient (R2) of the second-order model and Ritchie's second model are equal to 0.995 and have the highest value. The total pore volume was 0.005119 (cm3 g-1) and the specific surface area was 2.1723 (m2g−1). The maximum CO2 adsorption capacity at 25 °C near 8 bar was 195.8 mg/g.https://www.ijche.com/article_154280_cb95c58cc957bda505bf9b5075a24155.pdfcarbon dioxideadsorptionsilica gelisothermkinetics |
| spellingShingle | Zohreh khoshraftar Ahad Ghaemi Hossein Mashhadimoslem Evaluation of the Silica Gel Adsorbent Potential for Carbon Dioxide Capture: Experimental and Modeling Iranian Journal of Chemical Engineering carbon dioxide adsorption silica gel isotherm kinetics |
| title | Evaluation of the Silica Gel Adsorbent Potential for Carbon Dioxide Capture: Experimental and Modeling |
| title_full | Evaluation of the Silica Gel Adsorbent Potential for Carbon Dioxide Capture: Experimental and Modeling |
| title_fullStr | Evaluation of the Silica Gel Adsorbent Potential for Carbon Dioxide Capture: Experimental and Modeling |
| title_full_unstemmed | Evaluation of the Silica Gel Adsorbent Potential for Carbon Dioxide Capture: Experimental and Modeling |
| title_short | Evaluation of the Silica Gel Adsorbent Potential for Carbon Dioxide Capture: Experimental and Modeling |
| title_sort | evaluation of the silica gel adsorbent potential for carbon dioxide capture experimental and modeling |
| topic | carbon dioxide adsorption silica gel isotherm kinetics |
| url | https://www.ijche.com/article_154280_cb95c58cc957bda505bf9b5075a24155.pdf |
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