Effect of the amino acid L-histidine on methane hydrate growth kinetics

TitleEffect of the amino acid L-histidine on methane hydrate growth kinetics
Publication TypeJournal Article
Year of Publication2016
AuthorsBhattacharjee, G, Choudhary, N, Kumar, A, Chakrabarty, S, Kumar, R
JournalJournal of Natural Gas Science and Engineering
Volume35
Pagination1453-1462
Date PublishedSEP
Type of ArticleArticle
ISSN1875-5100
KeywordsAmino acid, Crystal growth, Gas hydrate, kinetics, Molecular dynamic simulation
Abstract

In the present study, the effect of a polar amino acid, L-histidine on methane hydrate growth kinetics has been investigated. Methane hydrate formation experiments were carried out in a stirred tank reactor setup at pressure and temperature conditions of 274.15 K and 5.0 MPa respectively. Two different concentrations (0.1 and 1 wt %) of L-histidine were studied. Hydrate growth through molecular dynamic (MD) simulation was also studied; pressure and temperature conditions for the simulations were set at 10.0 MPa and 270.0 K, while the concentration of L-histidine was kept fixed at 0.94 wt %. Hydrate formation runs using MD simulation were carried out with optimal concentration of methane in water. The presence of L-histidine in the system was found to significantly enhance methane hydrate growth kinetics as compared to pure water for both experimental and MD simulation runs. Final gas consumption with 1 wt % L-histidine was found to be comparable to that with 1 wt % SDS, the most commonly used additive for hydrate promotion studies. L-histidine is a benign additive which offers considerable enhancement in methane hydrate formation kinetics and can be utilized for various hydrate based technologies such as methane storage and transport. (C) 2016 Elsevier B.V. All rights reserved.

DOI10.1016/j.jngse.2016.05.052
Type of Journal (Indian or Foreign)Foreign
Impact Factor (IF)2.96
Divison category: 
Chemical Engineering & Process Development
Physical and Materials Chemistry

Add new comment