Adsorption–Desorption Behavior of Hydrogen Sulfide Capture on a Modified Activated Carbon Surface
Metal-based adsorbents with varying active phase loadings were synthesized to capture hydrogen sulfide (H<sub>2</sub>S) from a biogas mimic system. The adsorption–desorption cycles were implemented to ascertain the H<sub>2</sub>S captured. All prepared adsorbents were evaluat...
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MDPI AG
2023-01-01
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| author | Nurul Noramelya Zulkefli Adam Mohd Izhan Noor Azam Mohd Shahbudin Masdar Wan Nor Roslam Wan Isahak |
| author_facet | Nurul Noramelya Zulkefli Adam Mohd Izhan Noor Azam Mohd Shahbudin Masdar Wan Nor Roslam Wan Isahak |
| author_sort | Nurul Noramelya Zulkefli |
| collection | DOAJ |
| description | Metal-based adsorbents with varying active phase loadings were synthesized to capture hydrogen sulfide (H<sub>2</sub>S) from a biogas mimic system. The adsorption–desorption cycles were implemented to ascertain the H<sub>2</sub>S captured. All prepared adsorbents were evaluated by nitrogen adsorption, Brunauer–Emmett–Teller surface area analysis, scanning electron microscopy–energy-dispersive X-ray spectroscopy, and Fourier transform infrared spectroscopy. From the results, modified adsorbents, dual chemical mixture (DCM) and a core–shell (CS) had the highest H<sub>2</sub>S adsorption performance with a range of 0.92–1.80 mg H<sub>2</sub>S/g. After several cycles of heat/N<sub>2</sub> regeneration, the total H<sub>2</sub>S adsorption capacity of the DCM adsorbent decreased by 62.1%, whereas the CS adsorbent decreased by only 25%. Meanwhile, the proposed behavioral model for H<sub>2</sub>S adsorption–desorption was validated effectively using various analyses throughout the three cycles of adsorption–desorption samples. Moreover, as in this case, the ZnAc<sub>2</sub>/ZnO/CAC_OS adsorbents show outstanding performances with 30 cycles of adsorption–desorption compared to only 12 cycles of ZnAc<sub>2</sub>/ZnO/CAC_DCM. Thus, this research paper will provide fresh insights into adsorption–desorption behavior through the best adsorbents’ development and the adsorbents’ capability at the highest number of adsorption–desorption cycles. |
| first_indexed | 2024-03-11T09:55:20Z |
| format | Article |
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| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-11T09:55:20Z |
| publishDate | 2023-01-01 |
| publisher | MDPI AG |
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| series | Materials |
| spelling | doaj.art-bb1f0367f7444101972deabd19b185d62023-11-16T15:52:00ZengMDPI AGMaterials1996-19442023-01-0116146210.3390/ma16010462Adsorption–Desorption Behavior of Hydrogen Sulfide Capture on a Modified Activated Carbon SurfaceNurul Noramelya Zulkefli0Adam Mohd Izhan Noor Azam1Mohd Shahbudin Masdar2Wan Nor Roslam Wan Isahak3Department of Chemical & Process Engineering, Faculty of Engineering & Built Environment, Universiti Kebangsaan Malaysia, Bangi 43600, Selangor, MalaysiaFuel Cell Institute, Universiti Kebangsaan Malaysia, Bangi 43600, Selangor, MalaysiaDepartment of Chemical & Process Engineering, Faculty of Engineering & Built Environment, Universiti Kebangsaan Malaysia, Bangi 43600, Selangor, MalaysiaDepartment of Chemical & Process Engineering, Faculty of Engineering & Built Environment, Universiti Kebangsaan Malaysia, Bangi 43600, Selangor, MalaysiaMetal-based adsorbents with varying active phase loadings were synthesized to capture hydrogen sulfide (H<sub>2</sub>S) from a biogas mimic system. The adsorption–desorption cycles were implemented to ascertain the H<sub>2</sub>S captured. All prepared adsorbents were evaluated by nitrogen adsorption, Brunauer–Emmett–Teller surface area analysis, scanning electron microscopy–energy-dispersive X-ray spectroscopy, and Fourier transform infrared spectroscopy. From the results, modified adsorbents, dual chemical mixture (DCM) and a core–shell (CS) had the highest H<sub>2</sub>S adsorption performance with a range of 0.92–1.80 mg H<sub>2</sub>S/g. After several cycles of heat/N<sub>2</sub> regeneration, the total H<sub>2</sub>S adsorption capacity of the DCM adsorbent decreased by 62.1%, whereas the CS adsorbent decreased by only 25%. Meanwhile, the proposed behavioral model for H<sub>2</sub>S adsorption–desorption was validated effectively using various analyses throughout the three cycles of adsorption–desorption samples. Moreover, as in this case, the ZnAc<sub>2</sub>/ZnO/CAC_OS adsorbents show outstanding performances with 30 cycles of adsorption–desorption compared to only 12 cycles of ZnAc<sub>2</sub>/ZnO/CAC_DCM. Thus, this research paper will provide fresh insights into adsorption–desorption behavior through the best adsorbents’ development and the adsorbents’ capability at the highest number of adsorption–desorption cycles.https://www.mdpi.com/1996-1944/16/1/462adsorbentshydrogen sulphideadsorption–desorptionbehavioral model |
| spellingShingle | Nurul Noramelya Zulkefli Adam Mohd Izhan Noor Azam Mohd Shahbudin Masdar Wan Nor Roslam Wan Isahak Adsorption–Desorption Behavior of Hydrogen Sulfide Capture on a Modified Activated Carbon Surface Materials adsorbents hydrogen sulphide adsorption–desorption behavioral model |
| title | Adsorption–Desorption Behavior of Hydrogen Sulfide Capture on a Modified Activated Carbon Surface |
| title_full | Adsorption–Desorption Behavior of Hydrogen Sulfide Capture on a Modified Activated Carbon Surface |
| title_fullStr | Adsorption–Desorption Behavior of Hydrogen Sulfide Capture on a Modified Activated Carbon Surface |
| title_full_unstemmed | Adsorption–Desorption Behavior of Hydrogen Sulfide Capture on a Modified Activated Carbon Surface |
| title_short | Adsorption–Desorption Behavior of Hydrogen Sulfide Capture on a Modified Activated Carbon Surface |
| title_sort | adsorption desorption behavior of hydrogen sulfide capture on a modified activated carbon surface |
| topic | adsorbents hydrogen sulphide adsorption–desorption behavioral model |
| url | https://www.mdpi.com/1996-1944/16/1/462 |
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