Density, Viscosity, Refractive Index, and Electrical Conductivity of Degraded Monoethanolamine Solutions at Standard Temperatures

Ju, Huitian; ElMoudir, Walid; Aboudheir, Ahmed; Mahinpey, Nader

doi:10.1021/acs.jced.7b01101

Cited by 12 publications

(4 citation statements)

References 26 publications

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“…Limonene, linalool, ethanol, and water were used to prepare the orange model systems as proposed by Gonçalves et al, whereas limonene, β-pinene, γ-terpinene, citral, ethanol, and water were used for the lemon/lime model systems as proposed by Koshima et al For the real systems, crude orange EO or crude acid lime EO, ethanol, and water were mixed. The CAS registry numbers, suppliers, and experimental purities, sources, and experimental physical properties of the standards used for the model systems and of the hydroalcoholic solvents and the crude EOs, as well as values from the literature at T = (298.2 ± 0.1) K, are shown in Table . ,, − …”

Section: Methodsmentioning

confidence: 99%

Physical Behavior of the Phases from the Liquid–Liquid Equilibrium of Citrus Essential Oils Systems at 298.2 K

et al. 2018

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Solvent extraction is a fractionation process applied to separate terpenes and oxygenated compounds from citrus essential oils (EOs). Once the knowledge of the physical properties of phases was found to be crucial for equipment design and the scaling of tubes and accessories, this study focused on the evaluation of density, viscosity, and interfacial tension of phases from the liquid−liquid equilibrium of citrus EO systems. Model mixtures of orange and lemon EOs and real systems at 298.2 K were prepared, and the physical properties of their phases were thus evaluated. Increased water content in the solvent led to higher values of density, viscosity, and interfacial tension, whereas an increased amount of oxygenated compounds caused lower interfacial tensions. Densities estimated by the simple mixing rule provided good results. Parameters of the Grunberg−Nissan model adjusted to the model systems data exhibited a good description of the viscosities of real systems. The UNIFAC-VISCO model provided suitable predictions of viscosities of the solvent phases, and satisfactory results for the interfacial tensions were calculated by linear adjustment and the Bahramian−Danesh thermodynamic model, except for the real acid lime system.

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Section: Methodsmentioning

confidence: 99%

Physical Behavior of the Phases from the Liquid–Liquid Equilibrium of Citrus Essential Oils Systems at 298.2 K

et al. 2018

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“…All standard experimental purities were assessed by gas chromatography without further purification. CAS registry numbers, source and supplier purity, experimental purities, density and viscosity values of the standards, crude EOs, and solvents as well as values from the literature at T = 298.2 ± 0.1 K ,− are available in Table .…”

Section: Methodsmentioning

confidence: 99%

Physical Properties of Model and Real Systems Composed of Essential Oils and Hydroalcoholic Solvents at 298.2 K and Atmospheric Pressure

et al. 2019

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Densities and viscosities of terpene-and solvent-rich phases from model and real systems composed of synthetic and real essential oils (EOs) and hydrated ethanol were experimentally determined at 298.2 K and local atmospheric pressure. Synthetic EOs were prepared by mixing representatives of terpenes and oxygenated compounds found in clove and allspice EOs, whereas crude bergamot and lavandin EOs were used for the real systems. The highest density values were related to increased oxygenated compounds in the mixture and higher water content in the solvent. Model and real systems revealed distinct viscosity behavior, where higher viscosity values for model systems and lower ones for the real systems were associated with more hydrated solvent. Empirical models were evaluated on their capability to describe the physical property values for several system compositions. The simple mixing rule in mass fraction exhibited satisfactory results for density, whereas the Andrade equation exhibited lower deviations for viscosity.

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“…compared some physicochemical properties (e.g. density, viscosity, refractive index, and electrical conductivity) of lab‐based and industry‐based degraded MEA solutions at standard temperature conditions to evaluate the influence of HSSs on the physical properties of the absorbing solvent 95 . They reported that the physicochemical properties displayed massive dependence on the mass fraction of MEA, mass fraction of HSSs, and CO 2 loading.…”

Section: Operational Problems Caused By Hsssmentioning

confidence: 99%

Handling heat‐stable salts in post‐combustion CO₂ capture: A detailed survey

Emori,

Udoh,

Ekerenam

et al. 2023

Greenhouse Gases

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The generation of heat‐stable salts (HSSs) in alkanolamine solutions for CO2 capture processes, which is adapted for power plant technologies, exists irrespective of the class of amine solution used for the capture process. Their presence do not only trigger decrements in the CO2 absorption capacities of the solvents and contribute to further alkanolamine degradation, but also result in foaming and loss of solvents, which impacts system economics and threatens the environment. HSSs also promote the corrosiveness of the metallic structures of capture systems by lowering the pH and increasing the conductivity of the absorbent solutions. Overall, these effects substantially subvert the reliability and integrity of CO2 capture units. This survey affords sufficient background on the existence of HSSs by unraveling the flow process in a typical alkanolamine‐based CO2 capture unit with respect to their formation points and potential threats. Furthermore, the major HSSs removal and alkanolamine reclamation methodologies (electrodialysis, distillation, ion exchange, electromagnetic separation, and solvent extraction) were comprehensively explored. We believe that this review paper will benefit researchers across disciplines as we continue to explore new and complex solvent formulations to minimize the cost of CO2 capture while maximizing efficiency. © 2023 Society of Chemical Industry and John Wiley & Sons, Ltd.

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Density, Viscosity, Refractive Index, and Electrical Conductivity of Degraded Monoethanolamine Solutions at Standard Temperatures

Cited by 12 publications

References 26 publications

Physical Behavior of the Phases from the Liquid–Liquid Equilibrium of Citrus Essential Oils Systems at 298.2 K

Physical Behavior of the Phases from the Liquid–Liquid Equilibrium of Citrus Essential Oils Systems at 298.2 K

Physical Properties of Model and Real Systems Composed of Essential Oils and Hydroalcoholic Solvents at 298.2 K and Atmospheric Pressure

Handling heat‐stable salts in post‐combustion CO₂ capture: A detailed survey

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Density, Viscosity, Refractive Index, and Electrical Conductivity of Degraded Monoethanolamine Solutions at Standard Temperatures

Cited by 12 publications

References 26 publications

Physical Behavior of the Phases from the Liquid–Liquid Equilibrium of Citrus Essential Oils Systems at 298.2 K

Physical Behavior of the Phases from the Liquid–Liquid Equilibrium of Citrus Essential Oils Systems at 298.2 K

Physical Properties of Model and Real Systems Composed of Essential Oils and Hydroalcoholic Solvents at 298.2 K and Atmospheric Pressure

Handling heat‐stable salts in post‐combustion CO2 capture: A detailed survey

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Product

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Handling heat‐stable salts in post‐combustion CO₂ capture: A detailed survey