The impact of amino acids on methane hydrate phase boundary and formation kinetics

Bavoh, Cornelius B.; Nashed, Omar; Khan, Muhammad Saad; Partoon, Behzad; Sharif, Azmi M.

doi:10.1016/j.jct.2017.09.001

Cited by 103 publications

(72 citation statements)

References 35 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The potential of the improved delay time observed is perhaps due to the larger subcooling (11°C) conditions of studied mixed gas system compared to pure water systems (CO 2 = 7.32°C; CH 4 = 10°C). This observation also highlighted the limitation of PVP (commercial inhibitor) efficacy over harsh deep-water condition which loses its strength at higher subcooling conditions [38,47]. Figure 11 refers the initial formation rate of 50-50 CO 2 + CH 4 mixed gas hydrates.…”

Section: Effect Of Tmaoh On the Kinetics Of Binary Mixed Gas Hydratesmentioning

confidence: 90%

Kinetic Assessment of Tetramethyl Ammonium Hydroxide (Ionic Liquid) for Carbon Dioxide, Methane and Binary Mix Gas Hydrates

Khan¹,

Cornelius²,

Lal³

et al. 2018

Recent Advances in Ionic Liquids

Self Cite

View full text Add to dashboard Cite

This present work highlights the impact of ammonium-based ionic liquid tetramethylammonium hydroxide (TMAOH) on the formation kinetics of carbon dioxide (CO 2), methane (CH 4), and their binary mixed gas (50-50 mole%) hydrates. The TMAOH (IL) is applied in varying concentrations (0.5, 1, and 2 wt%) at different experimental temperatures, i.e., 1 and 4°C. The kinetic experiments are conducted in a high-pressure reactor equipped with two-bladed impeller, to provide sufficient agitation. The experimental pressures of CO 2 , CH 4 , and mixed 50% CO 2 + 50% CH 4 were 3.50, 8.0, and 6.50 MPa, respectively. Induction time, the initial apparent rate of formation and the total gas consumed are the kinetic parameters used to evaluate the performance of TMAOH as KHI. The results are further compared with commercial KHI (PVP), at higher subcooling condition of 1°C and 1 wt% of all the studied gaseous systems. Furthermore, the KHI performance of TMAOH is also evaluated via the relative inhibition performance (RIP) compared with other ILs for CO 2 and CH 4 hydrates. Results revealed that TMAOH delays the induction time for all the considered systems. The presence of TMAOH also reduced the total gas consumed and the initial rate of hydrate formation in most of the studied systems.

show abstract

Section: Effect Of Tmaoh On the Kinetics Of Binary Mixed Gas Hydratesmentioning

confidence: 90%

Kinetic Assessment of Tetramethyl Ammonium Hydroxide (Ionic Liquid) for Carbon Dioxide, Methane and Binary Mix Gas Hydrates

Khan¹,

Cornelius²,

Lal³

et al. 2018

Recent Advances in Ionic Liquids

Self Cite

View full text Add to dashboard Cite

show abstract

“…On the other hand, Bavoh et al . 21 , have noticed that some amino acids such as arginine and valine are THIs for methane hydrates. However, the total gas uptake during the hydrate formation is higher, respectively, by about 2.5 and 10 times higher than pure water system.…”

Section: Resultsmentioning

confidence: 99%

“…Bavoh et al . 21 have also examined the effect of valine and arginine (1 to 5 wt%) on methane hydrates. They found a slightly lower hydrate dissociation temperature (0.5 K) in the presence amino acids, but with enhanced gas uptake rate.…”

Section: Introductionmentioning

confidence: 99%

Clathrate Hydrates of Greenhouse Gases in the Presence of Natural Amino Acids: Storage, Transportation and Separation Applications

Prasad

Kiran

2018

Sci Rep

View full text Add to dashboard Cite

Storage of greenhouse gases in the form of gas hydrates is attractive and is being pursued rigorously in recent times. However, slow formation rate and inefficient water to hydrate conversion are the main hindering factors. In this report, we examine the role of two amino acids (0.5 wt%), l-methionine (l-met) and l-phenylalanine (l-phe) on the formation of gas hydrates using methane (CH4), carbon dioxide (CO2) and their mixtures as guest molecules. Experiments are conducted under non-stirred and isochoric configurations. The hydrate conversion efficiency of both amino acids is identical for hydrates formed with CH4 and mixture of (CO2+CH4). However, the hydrate conversion is significantly less in CO2 hydrates in l-phe system. Addition of amino acids to the water dramatically improved the kinetics of hydrate formation and 90% of maximum gas uptake in hydrate phase occurred in less than an hour. The water to hydrate conversion is also very efficient (>85%) in the presence of amino acids. Therefore, the amino acids containing systems are suitable for storing both CH4 and CO2 gases. The gas hydrates were characterised using powder x-ray diffraction (XRD) and Raman spectroscopic measurements. These measurements indicate the formation of sI hydrates and encasing of gas molecules as guests.

show abstract

“…In order to establish the effects of additional chemicals and salts on water activity, there are different types of thermodynamic models available, such as the Dickens and Quinby Hunt [58,66] which is useful in determining the hydrate liquid vapor equilibrium for CH 4 hydrates. This model has also been used by other researchers [67,68] due to its accuracy in predicting the hydrate phases stability boundaries [69] in the presence of IL solutions and amino acids. In evaluating the performance of a thermodynamic hydrate inhibitor, the average suppression temperature, ∆T is one of the key indicator [70].…”

Section: Quaternary Ammonium Saltsmentioning

confidence: 99%

Review on Application of Quaternary Ammonium Salts for Gas Hydrate Inhibition

Hussain

Husin

2020

Applied Sciences

View full text Add to dashboard Cite

Gas hydrate solids occurrence is considered as one of the serious challenges in flow assurance as it affects the hydrocarbon production significantly, especially in deep water gas fields. The most cost-effective method to inhibit the formation of hydrate in pipelines is by injecting a hydrate inhibitor agent. Continuous studies have led to a comprehensive understanding on the use of low dosage hydrate inhibitors such as ionic liquid and quaternary ammonium salts which are also known as dual function gas hydrate inhibitors. This paper covers the latest types of quaternary ammonium salts (2020–2016) and a summary of findings which are essential for future studies. Reviews on the effects of length of ionic liquids alkyl chain, average suppression temperatures, hydrate dissociation enthalpies, and electrical conductivity to the effectiveness of the quaternary ammonium salts as gas hydrate inhibitors are included.

show abstract

The impact of amino acids on methane hydrate phase boundary and formation kinetics

Cited by 103 publications

References 35 publications

Kinetic Assessment of Tetramethyl Ammonium Hydroxide (Ionic Liquid) for Carbon Dioxide, Methane and Binary Mix Gas Hydrates

Kinetic Assessment of Tetramethyl Ammonium Hydroxide (Ionic Liquid) for Carbon Dioxide, Methane and Binary Mix Gas Hydrates

Clathrate Hydrates of Greenhouse Gases in the Presence of Natural Amino Acids: Storage, Transportation and Separation Applications

Review on Application of Quaternary Ammonium Salts for Gas Hydrate Inhibition

Contact Info

Product

Resources

About