Evaluation of adsorption efficiency of activated carbon functionalized with methyl diethanolamine in carbon dioxide gas
Journal Title: Environmental Health Engineering and Management Journal - Year 2022, Vol 9, Issue 3
Abstract
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.
Authors and Affiliations
Ali Haghmoradkhani, Alireza Pardakhti, Mohammad Ali Zahed
Keywords
Related Articles
- EP ID EP709428
- DOI 10.34172/EHEM.2022.27
- Views 66
- Downloads 0
Effects of noise pollution on Samen district residents in Mashhad city
Background: Noise pollution is one of the most important environmental pollutions that affects human health in different dimensions. The current study aimed to survey the effects of noise pollution on residents of the Sa...
Evaluation of exposure to phthalate esters through the use of various brands of drinking water bottled in polyethylene terephthalate (PET) containers under different storage conditions
Background: There are many concerns about the migration of phthalates into bottled water. These compounds are hazardous to consumers. In this study, the risk factors of the use of various brands of drinking water bottled...
Investigation of heavy metals accumulation in the soil and pine trees
Background: Human activities related to workshops in the cities contribute to the release of heavy metals into the environment, which pose serious risks to the environment and to human health. The aim of the present stud...
Comparison of heavy metals contamination and ecological risk between soils enriched with compost and chemical fertilizers in the North of Iran and ecological risk assessment
Background: Nowadays, uncontrolled use of chemical fertilizers in agriculture is one of the reasons for the entry of heavy metals into the environment. In this study, the heavy metals contamination of the soils enriche...
Measurement of ampicillin and penicillin G antibiotics in wastewater treatment plants during the COVID-19 pandemic: A case study in Isfahan
Background: In recent years, the world has faced with the COVID-19 pandemic, followed by a significant increase in the use of antibiotics to control the COVID-19 and other secondary infections. The nonbiodegradable cha...