Combined Inhibition Effect of 1-Ethyl-3-methy-limidazolium Chloride + Glycine on Methane Hydrate

Bavoh, Cornelius B.; Lal, Bhajan; Khan, Muhammad Saad; Osei, Harrison; Ayuob, Muhammad

doi:10.1088/1742-6596/1123/1/012060

Cited by 32 publications

(24 citation statements)

References 21 publications

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“…The [1][2][3][4][5][6][7]. The risk of gas hydrate formation is highly ant operational and safety challenge [8,9].…”

Section: Average Suppression Temperature (ŧ) and Dissociation Enthalpmentioning

confidence: 99%

“…) For a detailed comparison of the impact shown by DES on the CO 2 hydrate equilibrium temperature, the authors calculated the average depression temperature (∆T) demonstrated by the chemicals. Table 6 tabulates the values of average suppression temperature ( [1][2][3][4][5][6][7]. The risk of gas hydrate formation is highly s a significant operational and safety challenge [8,9].…”

Section: Average Suppression Temperature (ŧ) and Dissociation Enthalpmentioning

confidence: 99%

“…Gas hydrates are stable inclusion compounds made up of a network of water molecule cages that act as a host that trap light hydrocarbon as guest statistical analysis on experimental Hydrate Liquid-Vapor Equilibrium (HLVE) data under high pressure and low-temperature conditions during deep-water energy exploration and recovery [1][2][3][4][5][6][7]. The risk of gas hydrate formation is highly prevalent and poses a significant operational and safety challenge [8,9].…”

Section: Introductionmentioning

confidence: 99%

“…However, there are a few drawbacks associated with the conventional gas hydrates inhibitor, especially on the volatility of the chemical. Thus, researchers have been working towards Ionic Liquids (ILs) as gas hydrate inhibitors but currently looking for an alternative as the ILs itself have their disadvantages [1,4,6,15,17,18,[20][21][22]. ILs need a high purity, are expensive, require a large number of salts and solvents for complete exchange of anions, and have poor biodegradability.…”

Section: Introductionmentioning

confidence: 99%

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Tetraethylammonium Acetate and Tetraethylammonium Bromide-Based Deep Eutectic Solvents as Thermodynamic CO2 Gas Hydrate Inhibitors

et al. 2020

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The thermodynamic gas hydrate suppression behavior of four Deep Eutectic Solvents (DESs) was evaluated in this paper. The mixtures of Hydrogen Bond Acceptors (HBA), Tetraethylammonium Acetate (TEAAC), and Tetraethylammonium Bromide (TEAB) with Hydrogen Bond Donors (HBD), Mono-Ethylene Glycol (MEG), and Glycerol were used to make the DES. The DESs were made at a 1:7 molar ratio for the combinations of TEAAC:MEG, TEAAC:Glycerol, TEAB:MEG, and TEAB:Glycerol. The Hydrate Liquid-Vapor Equilibrium (HLVE) data for CO2 were evaluated through the T-cycle method at different temperature (273.15–283.15 K) and pressure (2–4 MPa) conditions in the presence and absence of 5 wt % aqueous DES solutions. The inhibition effects showed by the DESs, including average suppression temperature (ΔŦ) and gas hydrate dissociation enthalpies (ΔHdiss), were also calculated. The average suppression temperature values of the DESs ranged between 0.4 and 2.4, with the highest inhibition to lowest inhibition order being TEAB:Glycerol > TEAB:MEG > TEAAC:Glycerol > TEAAC:MEG. A comparison of the DES with conventional Thermodynamic Hydrate Inhibitors (THIs) showed that studied Deep Eutectic Solvents had better gas hydrate inhibition. The results proved that DES has the potential to be one of the promising alternatives in gas hydrate inhibition.

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“…The [1][2][3][4][5][6][7]. The risk of gas hydrate formation is highly ant operational and safety challenge [8,9].…”

Section: Average Suppression Temperature (ŧ) and Dissociation Enthalpmentioning

confidence: 99%

Section: Average Suppression Temperature (ŧ) and Dissociation Enthalpmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Tetraethylammonium Acetate and Tetraethylammonium Bromide-Based Deep Eutectic Solvents as Thermodynamic CO2 Gas Hydrate Inhibitors

et al. 2020

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“…In recent decades, hydrates have received plenty of attention, because of its potential to capture and store gas [4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21]. Also, it is discovered that gas hydrates located in subsea as well as permafrost region are a potential source of energy too [15].…”

Section: Introductionmentioning

confidence: 99%

Pre-Screening of Ionic Liquids as Gas Hydrate Inhibitor via Application of COSMO-RS for Methane Hydrate

Khan¹,

Lal²

2020

Solvents, Ionic Liquids and Solvent Effects

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Ionic liquids (ILs) due to their potential dual functionality to shift hydrate equilibrium curve and retard hydrate nucleation are considered as a very promising gas hydrate inhibitor. However, experimental testing alone is insufficient to examine all potential ILs combinations due to a high number of cation and anion to form ILs. In this context, four fundamental properties of IL-hydrate system, namely, sigma profile, hydrogen bonding energies, activity coefficient, and solubility, were stimulated through conductor-like screening model for real solvent (COSMO-RS). ILs were then analyzed to determine if they can be correlated with IL inhibition ability. Among them, sigma profile and hydrogen bonding energies, which later upgraded to total interaction energies, exhibit a significant relationship with IL inhibition ability. Total interaction energies of ions, on the other hand, have successfully been applied to develop a model. The model can predict the thermodynamic inhibition ability in terms of average temperature depression. The correlation was further validated with experimental values from literature with an average error of 20.49%. Finally, using sigma profile graph and developed correlation, the inhibition ability of 20 ammonium-based ILs (AILs) have been predicted. Tetramethylammonium hydroxide (TMA-OH), due to its short alkyl chain length cation and highly electronegative anion, has shown the most promising inhibition ability among the considered system.

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Mini review on environmental issues concerning conventional gas hydrate inhibitors

Haq

Qasim

Lal

et al. 2021

Process Safety Progress

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In the offshore oil and gas fields, the formation of gas hydrates creates critical issues, and these issues or challenges become more pervasive as productive activities proceed to deep sea waters. Further, a number of chemical additives that are used to prevent gas hydrate formation in pipelines pose toxicity issues and are harmful to the environment. Commercially available inhibitors such as methanol, glycols, polyvinyl caproclatum (PVCap), and polyvinylpyrrolidone (PVP), which are being used for gas hydrate mitigation, have shown toxicity issues such as corrosion and mass loss due to their volatile nature, resulting in their high consumption. Methanol and glycols are identified as thermodynamic hydrate inhibitors (THIs), while PVCap and PVP are classified as low‐dosage hydrate inhibitiors. There has been considerable discussion in the literature on whether to use THIs or low‐dosage gas hydrate inhibitors (LDHIs) but less discussion on their toxicity and harmful effects on the environment. Therefore, in this mini review we intend to throw light on the environmental issues concerning conventional gas hydrate inhibitors used currently.

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Combined Inhibition Effect of 1-Ethyl-3-methy-limidazolium Chloride + Glycine on Methane Hydrate

Cited by 32 publications

References 21 publications

Tetraethylammonium Acetate and Tetraethylammonium Bromide-Based Deep Eutectic Solvents as Thermodynamic CO2 Gas Hydrate Inhibitors

Tetraethylammonium Acetate and Tetraethylammonium Bromide-Based Deep Eutectic Solvents as Thermodynamic CO2 Gas Hydrate Inhibitors

Pre-Screening of Ionic Liquids as Gas Hydrate Inhibitor via Application of COSMO-RS for Methane Hydrate

Mini review on environmental issues concerning conventional gas hydrate inhibitors

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