Sorption of Methylene Blue on Ethylcellulose–Bentonite Film Composites

Алексеева, О. В.; Родионова, А. Н.; Bagrovskaya, N. A.; Носков, А. В.; Агафонов, А. В.

doi:10.1134/s2070205120020021

Cited by 2 publications

(1 citation statement)

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“…The kinetic constants for 0FA, 0.5FA, 1.0FA and 2.0FA-MEA infused hydrogel were determined at 1.54 min −1 , 0.76 min −1 , 1.01 min −1 , and 1.41 min −1 respectively. The use of aluminosilicate bentonite in ethylcellulose in study by Alekseeva et al (2020) also demonstrated a similar trend where the adsorption kinetic rate increased as the FA content increased, despite a decline in adsorption capacity [ 41 ].…”

Section: Resultsmentioning

confidence: 97%

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: Resultsmentioning

confidence: 97%