Experimental studies on CO2 absorption and solvent recovery in aqueous blends of monoethanolamine and tetrabutylammonium hydroxide

Perumal, Muthumari; Jayaraman, Dhanalakshmi; Ambedkar, B.

doi:10.1016/j.chemosphere.2021.130159

Cited by 19 publications

(35 citation statements)

References 42 publications

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“…Therefore, it can be said that [TBA][Br] in MEA blend is a good choice for solvent blend which can achieve rapid desorption with minimal IL composition. The results obtained were compared with the 30 wt% MEA as earlier reported in Perumal et al 31 . It has been observed that the CO 2 desorption rate of baseline MEA is lower than that of MEA with IL blends.…”

Section: Resultsmentioning

confidence: 67%

“…The interaction between the cation and anion of IL and CO 2 takes place through hydrogen bonding. The IL (tetrabutylammonium) cation reacts with MEA, CO 2 , H 2 O and forms carbamate, ammonium ions and ammonium hydroxide 31 . The acetate anion reacts with CO 2 , MEA, H 2 O and may form compounds: acetic acid, carbonate, carbonic acid, bicarbonate.…”

Section: Resultsmentioning

confidence: 99%

“…The amount of CO 2 absorbed/desorbed in the solvent blends was measured using fabricated Chittick apparatus. The Chittick apparatus is custom made and fabricated, which was reported earlier in our previous study 31 . The surface tension values of each and every sample were measured using a tensiometer.…”

Section: Methodsmentioning

confidence: 99%

“…The CO 2 loading (carbon loading) in the solvent blends was measured after absorption using the Chittick apparatus. The schematic representation of the absorption set up with detailed procedure was already discussed in our previous published work by Perumal et al 31 …”

Section: Methodsmentioning

confidence: 99%

“…During the process, samples were collected at 5, 15, 30, 45 and 60 mins. Then, the CO 2 loading was measured using the Chittick apparatus 31,32 . Following that, temperature was continuously recorded using a thermocouple (K‐type) until 1 hr of regeneration.…”

Section: Methodsmentioning

confidence: 99%

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Regeneration of CO₂‐rich aqueous amine‐ionic liquid blends in CO₂ capture process

Perumal

Jayaraman

2021

Greenhouse Gases

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In this present work, solvent regeneration of CO2‐rich aqueous solvent blends containing Monoethanolamine (MEA) and Ionic liquids was studied experimentally. The ionic liquids (ILs) used are tetrabutylammonium acetate [TBA][OAC] and tetrabutylammonium bromide [TBA][Br]. The solvent mixture composition of ILs are 2, 5, 10 wt% and their respective MEA as 28, 25, 20 wt%. CO2 absorption and desorption process were performed using solvent blends. The recovery of solvent was performed for three different temperatures 358, 368 and 373 K. The findings reveal that solvent blends of MEA with [TBA][Br] exhibit higher regeneration efficiency and lower regeneration energy than MEA with [TBA][OAC] blends with a minimum composition of 2 wt% [TBA][Br]. Energy consumption for recovery of 2 wt% [TBA][Br] blend with 28 wt% MEA was found to be 65.66 KJ mole−1 of CO2 which is 41.97% less than 30 wt% MEA. Furthermore, physicochemical properties such as pH, density, viscosity, carbon loading and surface tension have been measured before and after CO2 absorption and desorption process. © 2021 Society of Chemical Industry and John Wiley & Sons, Ltd.

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Section: Resultsmentioning

confidence: 67%

Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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Regeneration of CO₂‐rich aqueous amine‐ionic liquid blends in CO₂ capture process

Perumal

Jayaraman

2021

Greenhouse Gases

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Understanding the physical and thermodynamic properties of monoethanolamine‐ionic liquids for solvent screening in CO₂ capture process

Perumal¹,

Jayaraman²

2022

Asia-Pacific J Chem Eng

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The physical properties such as density, surface tension, and viscosity of monoethanolamine (MEA)-ionic liquids (ILs) solvent mixtures were studied experimentally in this work. The ILs namely, tetrabutylammonium acetate TBAAc, tetrabutylammonium bromide TBABr, and tetrabutylammonium hydroxide TBAOH were used. All the above parameters were measured at atmospheric pressure and various temperatures from 283 to 313 K with a 10 K interval.From the measured experimental data, thermodynamic properties such as thermal expansion, excess molar volume, viscosity deviation, and excess Gibbs free energy were also calculated. The physical and thermodynamic properties are more important to understand the solvent behavior during solvent screening in solvent-based CO 2 capture process. The 30 wt% solvent mixture composition was prepared as 28, 25, and 20 wt% MEA mixed with 2, 5, and 10 wt% ILs. Furthermore, a single empirical model was developed from the measured experimental data and the results are correlated. A good agreement was obtained between correlated and experimental data.

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Ionic liquids: a tool for CO2 capture and reduced emission

Das

Swami

Gardas

2023

Advanced Applications of Ionic Liquids

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Experimental studies on CO2 absorption and solvent recovery in aqueous blends of monoethanolamine and tetrabutylammonium hydroxide

Cited by 19 publications

References 42 publications

Regeneration of CO₂‐rich aqueous amine‐ionic liquid blends in CO₂ capture process

Regeneration of CO₂‐rich aqueous amine‐ionic liquid blends in CO₂ capture process

Understanding the physical and thermodynamic properties of monoethanolamine‐ionic liquids for solvent screening in CO₂ capture process

Ionic liquids: a tool for CO2 capture and reduced emission

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Experimental studies on CO2 absorption and solvent recovery in aqueous blends of monoethanolamine and tetrabutylammonium hydroxide

Cited by 19 publications

References 42 publications

Regeneration of CO2‐rich aqueous amine‐ionic liquid blends in CO2 capture process

Regeneration of CO2‐rich aqueous amine‐ionic liquid blends in CO2 capture process

Understanding the physical and thermodynamic properties of monoethanolamine‐ionic liquids for solvent screening in CO2 capture process

Ionic liquids: a tool for CO2 capture and reduced emission

Contact Info

Product

Resources

About

Regeneration of CO₂‐rich aqueous amine‐ionic liquid blends in CO₂ capture process

Regeneration of CO₂‐rich aqueous amine‐ionic liquid blends in CO₂ capture process

Understanding the physical and thermodynamic properties of monoethanolamine‐ionic liquids for solvent screening in CO₂ capture process