Adsorption equilibria of paeoniflorin and albiflorin on cyano-silica column from supercritical carbon dioxide/ethanol

Lü, Huisheng; Wang, Zhi; Geng, Zhongfeng; Li, Yonghui; Liu, Shuangyan; Liu, Jiatao

doi:10.1016/j.cjche.2018.05.026

Cited by 9 publications

(1 citation statement)

References 30 publications

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“…Figure shows that within the temperature range studied, an increase in pressure resulted in a decrease in the equilibrium adsorption of hexyl acetate on activated carbon. This finding is consistent with previous studies on the equilibrium adsorption of organic molecules on activated carbon and mesoporous silica materials in a supercritical CO 2 atmosphere. − Increasing the operating pressure increases the density of supercritical CO 2 and the amount of CO 2 adsorbed on the adsorbent. As a result, the adsorption capacity of hexyl acetate decreases.…”

Section: Resultssupporting

confidence: 92%

Adsorption Equilibrium Data of Hexyl Acetate on Activated Carbon under Supercritical CO₂ Conditions

Ushiki,

Matsumoto

2024

J. Chem. Eng. Data

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The regeneration of spent activated carbon that captures alkyl acetate, a major volatile organic compound (VOC) in the printing field, is extremely important for economic and environmental implications. The use of supercritical CO 2 avoids the high heat associated with conventional thermal methods that can degrade the carbon. However, existing research on this is limited in scope, and more comprehensive studies are needed to fully understand the technology. In this study, a fixed-bed adsorption method was used to investigate the adsorption of hexyl acetate on activated carbon in supercritical CO 2 at T = (313−353) K and P = (10−20) MPa. The results are consistent with previous studies on similar VOCs and show the influence of temperature and pressure on adsorption equilibria. Hexyl acetate showed higher adsorption than propyl acetate and ethyl acetate, which may be due to its different volatility in supercritical CO 2 and its different affinity for the absorbent used. The analysis using the Dubinin−Astakhov (DA) equation offers a quantitative understanding of how supercritical CO 2 density and VOC molecular size influence adsorption equilibria. This insight is essential for developing an efficient and eco-friendly regeneration method for the printing industry utilizing supercritical CO 2 .

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Section: Resultssupporting

confidence: 92%

Adsorption Equilibrium Data of Hexyl Acetate on Activated Carbon under Supercritical CO₂ Conditions

Ushiki,

Matsumoto

2024

J. Chem. Eng. Data

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Supercritical fluid adsorption of natural extracts: Technical, practical, and theoretical aspects

Carvalho¹,

Dias²,

Rodrigues³

et al. 2022

Journal of CO2 Utilization

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Equilibrium adsorption of diethyl ketone on activated carbon in a supercritical CO2 environment: Measurements and thermodynamic modeling

Ushiki,

Tahara

2024

Journal of CO2 Utilization

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Adsorption equilibria of paeoniflorin and albiflorin on cyano-silica column from supercritical carbon dioxide/ethanol

Cited by 9 publications

References 30 publications

Adsorption Equilibrium Data of Hexyl Acetate on Activated Carbon under Supercritical CO₂ Conditions

Adsorption Equilibrium Data of Hexyl Acetate on Activated Carbon under Supercritical CO₂ Conditions

Supercritical fluid adsorption of natural extracts: Technical, practical, and theoretical aspects

Equilibrium adsorption of diethyl ketone on activated carbon in a supercritical CO2 environment: Measurements and thermodynamic modeling

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Adsorption equilibria of paeoniflorin and albiflorin on cyano-silica column from supercritical carbon dioxide/ethanol

Cited by 9 publications

References 30 publications

Adsorption Equilibrium Data of Hexyl Acetate on Activated Carbon under Supercritical CO2 Conditions

Adsorption Equilibrium Data of Hexyl Acetate on Activated Carbon under Supercritical CO2 Conditions

Supercritical fluid adsorption of natural extracts: Technical, practical, and theoretical aspects

Equilibrium adsorption of diethyl ketone on activated carbon in a supercritical CO2 environment: Measurements and thermodynamic modeling

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Adsorption Equilibrium Data of Hexyl Acetate on Activated Carbon under Supercritical CO₂ Conditions

Adsorption Equilibrium Data of Hexyl Acetate on Activated Carbon under Supercritical CO₂ Conditions