Investigation of CO2 adsorption performance of amine impregnated adsorbents using amine-support matching strategies

Yan, Huangyu; Li, Jun; Li, Guoqiang; Zhao, Yuqiong; Wang, Ying; Wu, Chen; Zhang, Yongfa; Xu, Ying

doi:10.1016/j.seppur.2023.123178

Cited by 21 publications

(7 citation statements)

References 72 publications

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“…The utilization of solid support mechanisms in the development of gas adsorbents to minimize the drawback of amine solvent has been a topic of ongoing research for an extended period of time [ 13 , 14 , 15 , 16 , 17 , 18 ]. However, the use of power plant generated waste, specifically fly ash (FA) as an additive in polymer adsorbents to enhance gas adsorption properties, has not been widely explored in the research literature.…”

Section: Introductionmentioning

confidence: 99%

Amine Infused Fly Ash Grafted Acrylic Acid/Acrylamide Hydrogel for Carbon Dioxide (CO2) Adsorption and Its Kinetic Analysis

Ghani

Rabat

Rahim

et al. 2023

Gels

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In most carbon dioxide (CO2) capture processes, chemical absorption using an amine solvent is widely used technology; however, the solvent is prone to solvent degradation and solvent loss which leads to the formation of corrosion. This paper investigates the adsorption performance of amine-infused hydrogels (AIFHs) to increase carbon dioxide (CO2) capture by leveraging the potency of amine absorption and adsorption properties of class F fly ash (FA). The solution polymerization method was used to synthesize the FA-grafted acrylic acid/acrylamide hydrogel (FA-AAc/AAm), which was then immersed in monoethanolamine (MEA) to form amine infused hydrogels (AIHs). The prepared FA-AAc/AAm showed dense matrices morphology with no obvious pore at the dry state but capable of capturing up to 0.71 mol/g CO2 at 0.5 wt% FA content, 2 bar pressure, 30 °C reaction temperature, 60 L/min flow rate, and 30 wt% MEA contents. Cumulative adsorption capacity was calculated and Pseudo-first order kinetic model was used to investigate the CO2 adsorption kinetic at different parameters. Remarkably, this FA-AAc/AAm hydrogel is also capable of absorbing liquid activator that was 1000% more than its original weight. FA-AAc/AAm can be used as an alternative AIHs that employ FA waste to capture CO2 and minimize the GHG impact on the environment.

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Section: Introductionmentioning

confidence: 99%

Amine Infused Fly Ash Grafted Acrylic Acid/Acrylamide Hydrogel for Carbon Dioxide (CO2) Adsorption and Its Kinetic Analysis

Ghani

Rabat

Rahim

et al. 2023

Gels

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“…The absorption peak located between 3200 and 3420 cm –1 is caused by the asymmetric stretching vibration of −OH present on the supports. It can be seen that all three supports have successfully introduced PEI. − At the same time, it can be observed that there are still characteristic absorption peaks of silica after PEI functionalization, indicating that the characteristic structure of the supports has not changed after loading with PEI.…”

Section: Resultsmentioning

confidence: 86%

“…Therefore, we studied the effect of the support morphology on the dispersion mode of organic amines by linearly fitting the loss of pore volume of different morphologies of adsorbents relative to the original supports and different PEI loading amounts. 41 As shown in Figure 5a− 0.927, respectively. The R 2 value of SNP is significantly higher than those of SNH and SNT.…”

Section: Effect Of the Support Morphology On The Dispersion Mode Of A...mentioning

confidence: 84%

“…As the amino group is the active site for CO 2 adsorption, the CO 2 adsorption capacity of amine-based solid adsorbents is closely related to the dispersion of organic amines in the supports. Therefore, we studied the effect of the support morphology on the dispersion mode of organic amines by linearly fitting the loss of pore volume of different morphologies of adsorbents relative to the original supports and different PEI loading amounts . As shown in Figure a–c, the correlation coefficients R 2 of different adsorbents ( x %PEI-SNP, x %PEI-SNH, and x %PEI-SNT) are 0.994, 0.638, and 0.927, respectively.…”

Section: Resultsmentioning

confidence: 99%

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Adsorption of CO₂ in Flue Gas by Polyethylenimine-Functionalized Adsorbents: Effects of the Support Morphology and Dispersion Mode of Amines

Li,

Fu,

Pan

2023

Energy Fuels

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In recent years, the use of polyethylenimine (PEI)-functionalized adsorbents for CO 2 capture from flue gas has gained significant attention due to its excellent adsorption capacity. However, the influences of suitable support materials and their morphology on the adsorption and desorption of CO 2 have not been adequately explored. In this study, we investigate the impact of three nanostructures of SiO 2 support, namely, silica nanospheres (SNPs), silica nanosheets (SNHs), and silica nanotubes (SNTs), on CO 2 capture from ultralow emission flue gas, with special emphasis on key parameters such as the adsorption capacity, amine efficiency, kinetics, thermodynamics, cyclic stability, and optimal adsorption temperature to elucidate the crucial role of morphology. Experimental results demonstrated that SNHs facilitate the dispersion of PEI on their surface, thereby effectively utilizing the specific surface area and enhancing the dispersion of the active sites of PEI. This amine dispersion method successfully reduces the mass transfer resistance of CO 2 during the adsorption process. Conversely, SNTs lead to PEI dispersion between support particles, resulting in increased diffusion resistance toward CO 2 and consequently decreased adsorbent performance. For SNPs, the loading of PEI into the pores effectively prevented the degradation of the adsorption performance caused by PEI leaching during the cyclic use of the adsorbent. In addition, the larger pore volume of SNPs facilitated the loading of a greater number of PEI molecules. Notably, at 60 wt % PEI loading, SNPs exhibited a higher adsorption capacity (3.68 mmol/g), lower adsorption heat (51.91 kJ/mol), and reduced regeneration energy consumption (1.775 GJ/ton). This study sheds light on the role of the support morphology in adsorption processes and presents a novel strategy for designing solid amine adsorbents with favorable cycle stability, high CO 2 capture performance, and efficient amine utilization.

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“…Recent efforts to remove CO 2 from flue gases have given rise to the development of a variety of adsorbents. Among these, amine-based absorbents like monoethanolamine (MEA) and its derivatives have proven effective at capturing CO 2 in a specific manner. − Solid adsorbents such as zeolites and metal–organic frameworks (MOFs) have also shown promise . In particular, MOFs provide high surface areas and specialized interactions for CO 2 adsorption because of their customizable architectures. , Zeolites, on the other hand, while promising for CO 2 capture, face challenges like limited regenerability and sensitivity to moisture. , However, MOFs exhibit drawbacks such as potential instability in humid or acidic environments, affecting their long-term durability.…”

Section: Introductionmentioning

confidence: 99%

CO₂ Capture from Flue Gas on a Pilot Scale Using Porous Carbon Prepared from Cotton Stalk Crop Residues through an Industrially Viable Activation Process

Kumar,

Bhalani,

Andharia

et al. 2024

Ind. Eng. Chem. Res.

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With the aim to capture CO 2 from flue gas, porous carbon was derived from abundantly available, nonfodder crop residue�cotton stalk via thermochemical methodology. The precursor was treated with a new combination of chemical activating agents (NaOH and K 2 SO 4 ) in stoichiometric proportions and converted to porous carbon via a single-step activation. The transition to using this combination in place of the conventional KOH activation in the production of porous carbon offers an attractive industrial opportunity, due to the substantial drop in the cost of manufacturing. Extensive characterizations were performed on the derived carbon, which included XRD, XPS, Raman spectra, SEM, and TEM. Nitrogen adsorption−desorption isotherm analysis at 77 K revealed BET-specific surface areas of 1797 m 2 /g, along with CO 2 uptake capacities of 4.77, 2.49, and 1.71 mmol/g at 273, 298, and 313 K, respectively. Furthermore, the breakthrough curve of CO 2 adsorption in a fixed-bed column was studied at different flow rates and temperatures using the flue gas (11 ± 0.2% CO 2 and 89 ± 0.2% N 2 ) to analyze the equilibrium CO 2 capacity of the porous adsorbent in dynamic conditions. As proof of the concept, the porous carbon was packed in a column cartridge and the adsorption of CO 2 from flue gas emanating from a pilot-scale diesel-fired boiler was studied. This demonstrated that carbon cartridges can efficiently and practically remove CO 2 from flue gas, especially in small-scale industrial applications.

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Investigation of CO2 adsorption performance of amine impregnated adsorbents using amine-support matching strategies

Cited by 21 publications

References 72 publications

Amine Infused Fly Ash Grafted Acrylic Acid/Acrylamide Hydrogel for Carbon Dioxide (CO2) Adsorption and Its Kinetic Analysis

Amine Infused Fly Ash Grafted Acrylic Acid/Acrylamide Hydrogel for Carbon Dioxide (CO2) Adsorption and Its Kinetic Analysis

Adsorption of CO₂ in Flue Gas by Polyethylenimine-Functionalized Adsorbents: Effects of the Support Morphology and Dispersion Mode of Amines

CO₂ Capture from Flue Gas on a Pilot Scale Using Porous Carbon Prepared from Cotton Stalk Crop Residues through an Industrially Viable Activation Process

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Investigation of CO2 adsorption performance of amine impregnated adsorbents using amine-support matching strategies

Cited by 21 publications

References 72 publications

Amine Infused Fly Ash Grafted Acrylic Acid/Acrylamide Hydrogel for Carbon Dioxide (CO2) Adsorption and Its Kinetic Analysis

Amine Infused Fly Ash Grafted Acrylic Acid/Acrylamide Hydrogel for Carbon Dioxide (CO2) Adsorption and Its Kinetic Analysis

Adsorption of CO2 in Flue Gas by Polyethylenimine-Functionalized Adsorbents: Effects of the Support Morphology and Dispersion Mode of Amines

CO2 Capture from Flue Gas on a Pilot Scale Using Porous Carbon Prepared from Cotton Stalk Crop Residues through an Industrially Viable Activation Process

Contact Info

Product

Resources

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Adsorption of CO₂ in Flue Gas by Polyethylenimine-Functionalized Adsorbents: Effects of the Support Morphology and Dispersion Mode of Amines

CO₂ Capture from Flue Gas on a Pilot Scale Using Porous Carbon Prepared from Cotton Stalk Crop Residues through an Industrially Viable Activation Process