Density, Viscosity, pH, Heat of Absorption, and CO<sub>2</sub> Loading Capacity of Methyldiethanolamine and Potassium Lysinate Blend Solutions

Ramezani, Rouzbeh; Mazinani, Saeed; Felice, Renzo Di

doi:10.1021/acs.jced.0c00855

Cited by 18 publications

(16 citation statements)

References 72 publications

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“…The chemical reactions describing the K‐Lys + CO 2 + water system are quite complex and have been reported in detail in our previous work 27 . Here we report only the aspect which directly influences the CO 2 transfer rate.…”

Section: Resultsmentioning

confidence: 86%

“…Chemical equilibrium in the liquid bulk is also assumed to hold, and the component speciation function of CO 2 loading can be obtained once all the equilibrium constant is determined. This exercise has been carried out in previous work 27 and one example result is presented in the following Figure 15, valid for a solution possessing an initial MDEA concentration of 1.5 kmol/m 3 , an initial K‐Lys concentration of 0.5 kmol/m 3 , and for ambient temperature.…”

Section: Resultsmentioning

confidence: 99%

“…in detail in our previous work. 27 Here we report only the aspect which directly influences the CO 2 transfer rate. For unloaded solution, the main reaction involving CO 2 is carbamate formation…”

Section: 12mentioning

confidence: 99%

Section: Transfer Rate Of Co 2 To Liquid Solution Mixturesmentioning

confidence: 99%

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Kinetics study of CO₂ absorption into methyldiethanolamine, potassium lysinate, and their blends in aqueous solution

Ramezani

Felice

2022

Int J of Chemical Kinetics

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In this work, the kinetics for the reaction of CO2 with three chemical solvents were studied experimentally and theoretically. The CO2 absorption flux into the potassium lysinate (K‐Lys), methyldiethanolamine (MDEA), and their blends was measured over the CO2 partial pressure range of 50–500 kPa, and at temperatures 298.15, 303.15, and 313.15 K using a stirred cell reactor. The effect of the addition of K‐Lys on the absorption flux of CO2 into MDEA solution at low and high pressure was investigated. The reaction kinetics of CO2 absorption in CO2‐loaded MDEA, K‐Lys, and MDEA + K‐Lys solutions were also examined and absorption flux of CO2 as a function of CO2 loading was determined. The values of CO2 diffusivity, viscosity, the liquid mass transfer coefficient, the overall reaction rate constant, and the physical solubility of CO2 into MDEA + K‐Lys solution were reported. Furthermore, a standard kinetics model was developed to describe the CO2 absorption behavior in the solution at low and high pressures, for both unloaded and CO2‐loaded systems.

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Section: Resultsmentioning

confidence: 86%

Section: Resultsmentioning

confidence: 99%

Section: 12mentioning

confidence: 99%

Section: Transfer Rate Of Co 2 To Liquid Solution Mixturesmentioning

confidence: 99%

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Kinetics study of CO₂ absorption into methyldiethanolamine, potassium lysinate, and their blends in aqueous solution

Ramezani

Felice

2022

Int J of Chemical Kinetics

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“…Blending solvents is an endeavor to combine desirable features of both varieties of solvents and discard unfavorable ones . Thus, blending encouraged researchers to study various mixtures of alkanolamine and amino acid as new solvents for CO 2 absorption. ,,, This solvent class could be industrialized and formulated to eliminate acid gas contaminants from numerous gas streams and relieve each solvent’s weaknesses.…”

Section: Introductionmentioning

confidence: 99%

High-Pressure Vapor–Liquid Equilibrium Measurement of CO₂ Solubility into Aqueous Solvents of (Diisopropylamine + L-Lysine) and (Diisopropylamine + Piperazine + L-Lysine) at Different Temperatures and Compositions

2021

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The new experimental vapor−liquid equilibrium data for CO 2 solubility into two different combinations of alkanolamine + amino acid, alkanolamine + chemical additive, and one aqueous alkanolamine were attained at 328.15, 343.15, and 363.15 K and in the CO 2 partial pressure range from 40 to 3800 kPa. The measurements are performed for the mixture of diisopropylamine (DIPA) + L-lysine with the compositions of (37.5−2.19) wt %, (35.0−4.38) wt %, and (30−8.77) wt %, and a blend of DIPA + piperazine (PZ) + L-lysine with the compositions (30.0−7.5−2.19) wt % and (30.0−5−4.38) wt %. Besides, the CO 2 partial pressure against its loading was acquired for the aqueous systems of DIPA + PZ (30.0−10.0) wt % and DIPA (40.0) wt %. The results illustrate that the CO 2 loading in the solvents was enlarged with declining temperature and increasing pressure. For the system of DIPA (40.0) wt %, it was deduced that CO 2 solubility improves by substituting the 10 wt % of DIPA with PZ. In other comparisons, we found that, at a constant weight percentage of L-lysine and water and total alkanolamines, the degree of selectivity toward CO 2 solubility is as follows: DIPA + PZ + L-lysine + H 2 O > DIPA + L-lysine + H 2 O. Accordingly, the ability of PZ to remove CO 2 is more than DIPA. Besides, a quadratic equation is employed to correlate the CO 2 partial pressure versus its loading so that the calculated values reveal a great agreement with the experimental data. Lastly, the Clausius−Clapeyron equation is applied to compute and compare the enthalpy of CO 2 absorption for the current systems. We found that, among the utilized solvents, the aqueous systems of DIPA + L-lysine + water (30−10−60) wt % and DIPA+ water (40.0-60.0) wt % have the maximum and minimum heats of absorption, respectively.

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Graphene and its tailoring as emerging 2D nanomaterials in efficient CO2 absorption: A state-of-the-art interpretative review

Azni Farhana Mazri,

Arifutzzaman,

Kheireddine Aroua

et al. 2023

Alexandria Engineering Journal

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Density, Viscosity, pH, Heat of Absorption, and CO₂ Loading Capacity of Methyldiethanolamine and Potassium Lysinate Blend Solutions

Cited by 18 publications

References 72 publications

Kinetics study of CO₂ absorption into methyldiethanolamine, potassium lysinate, and their blends in aqueous solution

Kinetics study of CO₂ absorption into methyldiethanolamine, potassium lysinate, and their blends in aqueous solution

High-Pressure Vapor–Liquid Equilibrium Measurement of CO₂ Solubility into Aqueous Solvents of (Diisopropylamine + L-Lysine) and (Diisopropylamine + Piperazine + L-Lysine) at Different Temperatures and Compositions

Graphene and its tailoring as emerging 2D nanomaterials in efficient CO2 absorption: A state-of-the-art interpretative review

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Density, Viscosity, pH, Heat of Absorption, and CO2 Loading Capacity of Methyldiethanolamine and Potassium Lysinate Blend Solutions

Cited by 18 publications

References 72 publications

Kinetics study of CO2 absorption into methyldiethanolamine, potassium lysinate, and their blends in aqueous solution

Kinetics study of CO2 absorption into methyldiethanolamine, potassium lysinate, and their blends in aqueous solution

High-Pressure Vapor–Liquid Equilibrium Measurement of CO2 Solubility into Aqueous Solvents of (Diisopropylamine + L-Lysine) and (Diisopropylamine + Piperazine + L-Lysine) at Different Temperatures and Compositions

Graphene and its tailoring as emerging 2D nanomaterials in efficient CO2 absorption: A state-of-the-art interpretative review

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Density, Viscosity, pH, Heat of Absorption, and CO₂ Loading Capacity of Methyldiethanolamine and Potassium Lysinate Blend Solutions

Kinetics study of CO₂ absorption into methyldiethanolamine, potassium lysinate, and their blends in aqueous solution

Kinetics study of CO₂ absorption into methyldiethanolamine, potassium lysinate, and their blends in aqueous solution

High-Pressure Vapor–Liquid Equilibrium Measurement of CO₂ Solubility into Aqueous Solvents of (Diisopropylamine + L-Lysine) and (Diisopropylamine + Piperazine + L-Lysine) at Different Temperatures and Compositions