CO 2 /H 2 separation by amino-acid ionic liquids with polyethylene glycol as co-solvent

Li, Jun; Dai, Zhongde; Usman, Muhammad Arslan; Qi, Zhiwen; Deng, Liyuan

doi:10.1016/j.ijggc.2015.12.027

Cited by 39 publications

(16 citation statements)

References 32 publications

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“…Liquid side mass transfer coefficient is also inversely dependent on its viscosity. To reduce the liquid phase viscosity, blend IL absorbent with low viscous co-solvent, such as low molecular weight PEG (Li et al, 2016;Usman et al, 2016), can be used.…”

Section: Assessment Of Mass Transfer Resistancesmentioning

confidence: 99%

Mathematical modeling and validation of CO2 mass transfer in a membrane contactor using ionic liquids for pre-combustion CO2 capture

Usman

Dai

Hillestad

et al. 2017

Chemical Engineering Research and Design

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Mass transfer and mathematical modelling of CO2 absorption in a tubular membrane contactor using 1-Butyl-3-methylimidazolium Tricyanomethanide ([Bmim][TCM]) for pre-combustion CO2 capture has been studied in this work. A 1D-model was developed based on resistance in series model and CO2 material balance. The developed model was validated with the experimental data, and good agreement was observed between the simulated and experimental results. A new mass transfer resistance term is added to reflect the non-flat concentration profile in the liquid phase. Simulation results indicate that the liquid phase resistance contributes 67 % and 44 % to the total mass transfer resistance for non-wetted and wetted modes of membrane, respectively. The resistance that occurred due to considering transport in liquid phase contributes 31 and 20% for non-wetted and wetted modes of membrane contactor, respectively. CO2 flux along the axial length of membrane contactor was modeled, giving the maxima at the gas outlet. The influences of operational constraints including liquid/gas flow rates, operation pressure/ temperature, length of membrane contactor, and CO2 concentration in feed gas were also inspected.

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Section: Assessment Of Mass Transfer Resistancesmentioning

confidence: 99%

Mathematical modeling and validation of CO2 mass transfer in a membrane contactor using ionic liquids for pre-combustion CO2 capture

Usman

Dai

Hillestad

et al. 2017

Chemical Engineering Research and Design

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“…In that study the effect of O 2 on the absorption performances was determined, which were better than in the case of MEA solution. In another study, Li et al [23], tested [P 4444 ] salts of GLY, ALA and PRO, in combination with PEG solvents, on the design of membranes for CO 2 /H 2 separation. In a different framework, amino acids are combined with inorganic bases (mainly carbonate salts) in aqueous solutions to promote kinetics and capacity of CO 2 uptake.…”

Section: Amino Acidsmentioning

confidence: 99%

Bio-inspired Systems for Carbon Dioxide Capture, Sequestration and Utilization

Carrera¹,

Branco²,

daPonte³

2017

Recent Advances in Carbon Capture and Storage

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This chapter reviews the study and development of biological, enzymatic and biomolecular systems for carbon dioxide capture and further sequestration or even utilization. Regardless of the interest on the use of the captured CO 2 as C1 synthon on the manufacture of added-value compounds, there is a tremendous unbalance between the requirements of the contemporary society (leading to a massive production of carbon dioxide) and the framework of commercialization of the products from CO 2 utilization. In this context, viable options are storage as a solid in the form of calcium or magnesium carbonate and conversion into other energetic frameworks. In addition, it is important to highlight that the conventional energy resources are progressively being replaced by renewable resources. While the change in energetic paradigm is not accomplished, systems that capture and convert carbon dioxide are highly sought. To this end, bio-inspired systems will be presented, starting from the use of compounds from the chiral pool, such as amino acids, saccharides and related bio-polymers, involved in the physical and chemical capture, sequestration and/or utilization of CO 2. Additionally, enzymatic systems are presented in the context of sequestration of CO 2 in the form of solid carbonates or even utilization of this C1 synthon in the preparation of fuels and commodity chemicals. Carbonic anhydrase is by far the most studied enzyme, as it catalyses the inter-conversion between CO 2 and hydrogencarbonate in an effective mode. The biological option comprises the utilization of methanogens, acetogens and other organisms leading to the formation of added-value compounds. Most of the described systems are based on microbial electro-synthesis model and microbial carboncapture cell prototypes.

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“…The end hydroxyl group forms hydrogen bonds between molecules, resulting in low saturated vapor pressure and high thermal stability. The highly polar hydroxyl group of PEGs can also interact with CO 2 molecules to promote the absorption. , Li et al previously utilized the PEGs as cosolvents to prepare the low concentrated amine/PEG200 and ionic liquid/PEGs absorbents, which exhibited excellent absorption and desorption performance. ,, Among various PEG substances, the diethylene glycol and triethylene glycol are generally toxic, while PEG200 possesses excellent properties such as nontoxicity and no stimulation. In addition, the viscosity of PEGs increases with the molecular weights (e.g., 25.05 mPa·s for PEG200, 34.94 mPa·s for PEG300, and 44.4 mPa·s for PEG400 at 313 K).…”

Section: Introductionmentioning

confidence: 99%

Nonaqueous MEA/PEG200 Absorbent with High Efficiency and Low Energy Consumption for CO₂ Capture

Tian

et al. 2021

Ind. Eng. Chem. Res.

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CO 2 capture by stripping with aqueous amine is a well-understood and widely employed technology. However, there still exist several drawbacks in the practical applications, such as high energy consumption and serious equipment corrosion. In this paper, an organic monoethanolamine/poly(ethylene glycol) 200 (MEA/PEG200) absorbent with low specific heat capacity, low vapor pressure, and a high boiling point was developed to substitute the aqueous amine systems. The absorption rate and capacity, the desorption rate, and regeneration efficiency, as well as the thermal stability of the absorbent were systematically investigated. For instance, the 3 M MEA/PEG200 absorbent exhibited the highest desorption rate (838 mg CO 2 /(L sol •min)) and excellent cyclic stability (deviation < 4%), which was much superior to the 3 M MEA/H 2 O absorbent (447 mg CO 2 /(L sol •min)). In addition, the desorption energy consumption of the MEA/PEG200 absorbent was 33% lower than that of the MEA/H 2 O. Moreover, both fresh and CO 2 -rich MEA/PEG200 solutions exhibited only slight corrosion to carbon steels even after being immersed for 400 days. Therefore, this low-energy-consuming and anticorrosive MEA/PEG200 absorbent reveals the potential for industrial CO 2 capture.

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CO 2 /H 2 separation by amino-acid ionic liquids with polyethylene glycol as co-solvent

Cited by 39 publications

References 32 publications

Mathematical modeling and validation of CO2 mass transfer in a membrane contactor using ionic liquids for pre-combustion CO2 capture

Mathematical modeling and validation of CO2 mass transfer in a membrane contactor using ionic liquids for pre-combustion CO2 capture

Bio-inspired Systems for Carbon Dioxide Capture, Sequestration and Utilization

Nonaqueous MEA/PEG200 Absorbent with High Efficiency and Low Energy Consumption for CO₂ Capture

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CO 2 /H 2 separation by amino-acid ionic liquids with polyethylene glycol as co-solvent

Cited by 39 publications

References 32 publications

Mathematical modeling and validation of CO2 mass transfer in a membrane contactor using ionic liquids for pre-combustion CO2 capture

Mathematical modeling and validation of CO2 mass transfer in a membrane contactor using ionic liquids for pre-combustion CO2 capture

Bio-inspired Systems for Carbon Dioxide Capture, Sequestration and Utilization

Nonaqueous MEA/PEG200 Absorbent with High Efficiency and Low Energy Consumption for CO2 Capture

Contact Info

Product

Resources

About

Nonaqueous MEA/PEG200 Absorbent with High Efficiency and Low Energy Consumption for CO₂ Capture