Evaluation of adsorption efficiency of activated carbon functionalized with methyl diethanolamine in carbon dioxide gas
Background: Adsorption is a process in which some of the components in the fluid phase, are selectively transferred to the surface of the porous solid particles in the filled bed, which is called the adsorbent. The aim of this study was to examine the adsorption effectiveness of CO2 by activated c...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Kerman University of Medical Sciences
2022-08-01
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| Series: | Environmental Health Engineering and Management |
| Subjects: | |
| Online Access: | http://ehemj.com/article-1-985-en.html |
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| author | Ali Haghmoradkhani Alireza Pardakhti Mohammad Ali Zahed |
| author_facet | Ali Haghmoradkhani Alireza Pardakhti Mohammad Ali Zahed |
| author_sort | Ali Haghmoradkhani |
| collection | DOAJ |
| description | Background: Adsorption is a process in which some of the components in the fluid phase, are selectively
transferred to the surface of the porous solid particles in the filled bed, which is called the adsorbent. The
aim of this study was to examine the adsorption effectiveness of CO2 by activated carbon functionalized
with methyl diethanolamine (MDEA), as well as the effects of adsorption temperature, the total pressure of
adsorption, and mass of adsorbent.
Methods: Activated carbon was first produced using the desired biomasses and suitable activated carbon
was chosen. The activated carbon was then functionalized with MDEA amination method. The crystal
structure of adsorbents was studied using X-ray diffraction (XRD) methods. In addition, the porosity,
specific surface area and structure of prepared activated carbon were measured using BET techniques.
Finally, the morphology and strength of the functional groups were measured using Field emission scanning
electron microscopy (FESEM) and Fourier-transform infrared spectroscopy (FTIR) analyses.
Results: The findings of the FESEM and BET analyses for functionalized activated carbon revealed that the
specific surface area of the adsorbent increased throughout the chemical and physical modification process,
resulting in a BET amount of 725/84 m2/g. The results showed that the selectivity of the functionalized
activated carbon is greater than that of the non-functionalized adsorbent.
Conclusion: The adsorption capacity of functionalized activated carbon was 3.98 mmol CO2 g-1 sorbent,
compared to 2.587 mmol CO2 g-1 sorbent in the non-functionalized carbon, indicating a 35% improvement
in the efficiency of the functionalized sample. According to the findings of the desorption experiments,
functionalized carbon shows a 25% decrease in CO2 adsorption efficiency after 20 desorption steps. |
| first_indexed | 2024-04-11T09:46:58Z |
| format | Article |
| id | doaj.art-f2b71c34d7ca46ecaac62accbece5540 |
| institution | Directory Open Access Journal |
| issn | 2423-3765 2423-4311 |
| language | English |
| last_indexed | 2024-04-11T09:46:58Z |
| publishDate | 2022-08-01 |
| publisher | Kerman University of Medical Sciences |
| record_format | Article |
| series | Environmental Health Engineering and Management |
| spelling | doaj.art-f2b71c34d7ca46ecaac62accbece55402022-12-22T04:30:57ZengKerman University of Medical SciencesEnvironmental Health Engineering and Management2423-37652423-43112022-08-019326127010.34172/EHEM.2022.27Evaluation of adsorption efficiency of activated carbon functionalized with methyl diethanolamine in carbon dioxide gasAli Haghmoradkhani0Alireza Pardakhti1Mohammad Ali Zahed2School of Environment, Kish International Campus, University of Tehran, Tehran, IranSchool of Environment, College of Engineering, University of Tehran, Tehran, IranFaculty of Biological Sciences, Kharazmi University, Tehran, IranBackground: Adsorption is a process in which some of the components in the fluid phase, are selectively transferred to the surface of the porous solid particles in the filled bed, which is called the adsorbent. The aim of this study was to examine the adsorption effectiveness of CO2 by activated carbon functionalized with methyl diethanolamine (MDEA), as well as the effects of adsorption temperature, the total pressure of adsorption, and mass of adsorbent. Methods: Activated carbon was first produced using the desired biomasses and suitable activated carbon was chosen. The activated carbon was then functionalized with MDEA amination method. The crystal structure of adsorbents was studied using X-ray diffraction (XRD) methods. In addition, the porosity, specific surface area and structure of prepared activated carbon were measured using BET techniques. Finally, the morphology and strength of the functional groups were measured using Field emission scanning electron microscopy (FESEM) and Fourier-transform infrared spectroscopy (FTIR) analyses. Results: The findings of the FESEM and BET analyses for functionalized activated carbon revealed that the specific surface area of the adsorbent increased throughout the chemical and physical modification process, resulting in a BET amount of 725/84 m2/g. The results showed that the selectivity of the functionalized activated carbon is greater than that of the non-functionalized adsorbent. Conclusion: The adsorption capacity of functionalized activated carbon was 3.98 mmol CO2 g-1 sorbent, compared to 2.587 mmol CO2 g-1 sorbent in the non-functionalized carbon, indicating a 35% improvement in the efficiency of the functionalized sample. According to the findings of the desorption experiments, functionalized carbon shows a 25% decrease in CO2 adsorption efficiency after 20 desorption steps.http://ehemj.com/article-1-985-en.htmlactivated carbonmethyldiethanolamineaminationcarbon dioxide |
| spellingShingle | Ali Haghmoradkhani Alireza Pardakhti Mohammad Ali Zahed Evaluation of adsorption efficiency of activated carbon functionalized with methyl diethanolamine in carbon dioxide gas Environmental Health Engineering and Management activated carbon methyldiethanolamine amination carbon dioxide |
| title | Evaluation of adsorption efficiency of activated carbon functionalized with methyl diethanolamine in carbon dioxide gas |
| title_full | Evaluation of adsorption efficiency of activated carbon functionalized with methyl diethanolamine in carbon dioxide gas |
| title_fullStr | Evaluation of adsorption efficiency of activated carbon functionalized with methyl diethanolamine in carbon dioxide gas |
| title_full_unstemmed | Evaluation of adsorption efficiency of activated carbon functionalized with methyl diethanolamine in carbon dioxide gas |
| title_short | Evaluation of adsorption efficiency of activated carbon functionalized with methyl diethanolamine in carbon dioxide gas |
| title_sort | evaluation of adsorption efficiency of activated carbon functionalized with methyl diethanolamine in carbon dioxide gas |
| topic | activated carbon methyldiethanolamine amination carbon dioxide |
| url | http://ehemj.com/article-1-985-en.html |
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