Rapid formation of methane hydrate in environment-friendly leucine-based complex systems

Yue Qin, Liyan Shang, Zhenbo Lv, Zhiming Liu, Jianyu He, Xu Li, Maxime Binama, Lingyun Yang and Deyang Wang

Energy, 2022, vol. 254, issue PA

Abstract: Given the growing demand for natural gas (NG) in energy supply systems worldwide, solidified natural gas (SNG) is viewed as a potential NG storage and transportation method owing to its numerous advantages. However, using significant amounts of sodium dodecyl sulfate (SDS) to improve its slow formation kinetics has a negative influence on the environment, and severe foaming hinders the system's recovery. To overcome the associated issues, the main promoter has been chosen to be the ecologically safe and non-foaming L-leucine, with low concentrations of SDS and NaCl, as well as glass beads of various particle sizes, added to achieve synergistic effects. The hydrophobic micro-regions created by the leucine molecules, as well as the porous hydrate characteristics, considerably enhanced hydrate formation in the leucine-based complex system. At the effective promotion concentration, the SDS dosage is reduced by 60–90%. Owing to their strong promotion effect and non-foaming feature, yielding almost non-toxic properties, the LS1 and LN4 systems may be employed commercially. With a target of advancing SNG technology, this study serves as a reference for future developments of SNG technology based on the idea of environmental friendliness.

Keywords: Methane hydrate; Amino acids; Porous media; NaCl; SDS (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:254:y:2022:i:pa:s0360544222011173

DOI: 10.1016/j.energy.2022.124214

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