The link between the kinetics of gas hydrate formation and surface ion distribution in the low salt concentration regime

Fuel ◽  
2019 ◽  
Vol 240 ◽  
pp. 309-316 ◽  
Author(s):  
Fariba Asadi ◽  
Majid Ejtemaei ◽  
Greg Birkett ◽  
Debra J. Searles ◽  
Anh V. Nguyen
Keyword(s):  
Salt Concentration ◽  
Gas Hydrate ◽  
Hydrate Formation ◽  
Ion Distribution ◽  
Gas Hydrate Formation ◽  
Low Salt ◽  
Kinetics Of

scholarly journals Screening of Amino Acids and Surfactant as Hydrate Promoter for CO2 Capture from Flue Gas

Processes ◽  
2020 ◽  
Vol 8 (1) ◽  
pp. 124 ◽  
Author(s):  
Pandey ◽  
Daas ◽  
Solms
Keyword(s):  
Amino Acids ◽  
Gas Hydrate ◽  
Flue Gas ◽  
Sodium Dodecyl ◽  
Hydrate Formation ◽  
Bulk Water ◽  
Gas Hydrate Formation ◽  
Hydropathy Index ◽  
Hydrophobic Amino Acids ◽  
Kinetics Of

In this study, the kinetics of flue gas hydrate formation in bulk water in the presence of selected amino acids and surfactants are investigated. Four amino acids (3000 ppm) are selected based on different hydropathy index. Constant-ramping and isothermal experiments at 120 bar pressure and 1 °C temperature are carried out to compare their hydrate promotion capabilities with surfactant sodium dodecyl sulfate (SDS) (500–3000 ppm) and water. Based on experimental results, we report the correlation between hydrate promotion capability of amino acids and their hydrophobicity. Hydrophobic amino acids show stronger flue gas hydrate promotion capability than water and hydrophilic amino acids. We discuss the controlling mechanisms to differentiate between promoters and inhibitors’ roles among the amino acids. Between 2000–3000 ppm concentrations, hydrophobic amino acids have near similar promotion capabilities as SDS. This research highlights the potential use of amino acids as promoters or inhibitors for various applications.

Kinetics of methane gas hydrate formation with microscale sand in an autoclave with windows

Fuel ◽  
2017 ◽  
Vol 209 ◽  
pp. 85-95 ◽  
Author(s):  
WuChang Wang ◽  
Kai Jiang ◽  
YuXing Li ◽  
ZhengZhuo Shi ◽  
GuangChun Song ◽  
...  
Keyword(s):  
Gas Hydrate ◽  
Hydrate Formation ◽  
Methane Gas ◽  
Gas Hydrate Formation ◽  
Kinetics Of

Review the impact of nanoparticles on the thermodynamics and kinetics of gas hydrate formation

2018 ◽  
Vol 55 ◽  
pp. 452-465 ◽  
Author(s):  
Omar Nashed ◽  
Behzad Partoon ◽  
Bhajan Lal ◽  
Khalik M. Sabil ◽  
Azmi Mohd Shariff
Keyword(s):  
Gas Hydrate ◽  
Hydrate Formation ◽  
Thermodynamics And Kinetics ◽  
Gas Hydrate Formation ◽  
The Impact ◽  
Kinetics Of

Experimental and modeling investigation of kinetics of methane gas hydrate formation in water-in-oil emulsion

2014 ◽  
Vol 362 ◽  
pp. 28-34 ◽  
Author(s):  
Liang Mu ◽  
Shi Li ◽  
Qing-Lan Ma ◽  
Ke Zhang ◽  
Chang-Yu Sun ◽  
...  
Keyword(s):  
Gas Hydrate ◽  
Hydrate Formation ◽  
Oil Emulsion ◽  
Methane Gas ◽  
Gas Hydrate Formation ◽  
Water In Oil Emulsion ◽  
Kinetics Of

Application of Silver Nanofluids on Kinetics of Sulfur Hexafluoride Gas Hydrate Formation

2020 ◽  
Vol 20 (9) ◽  
pp. 5473-5477 ◽  
Author(s):  
Dong Hyun Kim ◽  
Kyung Chan Kang ◽  
Seong Deok Seo ◽  
Seung Min Lee ◽  
Ji Won Jeong ◽  
...  
Keyword(s):  
Gas Hydrates ◽  
Gas Hydrate ◽  
Sulfur Hexafluoride ◽  
Salt Water ◽  
Hydrate Formation ◽  
Electrical Explosion ◽  
Material System ◽  
Water And Wastewater Treatment ◽  
Gas Hydrate Formation ◽  
Kinetics Of

Gas hydrates are nonstoichiometric nano-structured crystalline compounds which are stabilized by gas molecules incorporated in the cages made of hydrogen bonding of water molecules at suitable thermodynamic conditions. The gas hydrate as a technology has been successful for several potential applications in various engineering fields, such as, gas separation, carbon dioxide sequestration, gas storage and transportation, desalination of salt water and wastewater treatment. Recently, metal-based nanofluids are considered as interesting kinetic promoter candidates for accelerating formation of gas hydrates. Although organic-based kinetic promoters are widely studied for the rapid formation of gas hydrates, research of a new material system is still a challenge. In this study, Silver (Ag) nanofluids as kinetic promoter of sulfur hexafluoride (SF6) hydrate were prepared by electrical explosion of pure metal wire in deionized water. The kinetics of SF6 gas hydrates were evaluated with different concentration of Ag nanofluids at condition of 276 K and 0.7 MPa, respectively. The Ag nanofluids, as kinetic nano-prompter, showed excellent effect on the formation of SF6 hydrates.

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