Inhibition effect of amino acids on carbon dioxide hydrate

The formation of gas hydrates hinders oil & gas transportation in pipelines, however, adequate knowledge and understanding of the gas hydrate phase behaviour is a key to its prevention. Thus, this study reports the inhibition effect of glycine, alanine, proline, serine and arginine on the carbon...

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Main Authors: Bavoh, C.B., Partoon, B., Lal, B., Gonfa, G., Foo Khor, S., Sharif, A.M.
Format: Article
Institution: Universiti Teknologi Petronas
Record Id / ISBN-0: utp-eprints.19666 /
Published: Elsevier Ltd 2017
Online Access: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85020044217&doi=10.1016%2fj.ces.2017.05.046&partnerID=40&md5=d1d44400857fe627db6220e1b4f8d191
http://eprints.utp.edu.my/19666/
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spelling utp-eprints.196662018-04-20T07:27:53Z Inhibition effect of amino acids on carbon dioxide hydrate Bavoh, C.B. Partoon, B. Lal, B. Gonfa, G. Foo Khor, S. Sharif, A.M. The formation of gas hydrates hinders oil & gas transportation in pipelines, however, adequate knowledge and understanding of the gas hydrate phase behaviour is a key to its prevention. Thus, this study reports the inhibition effect of glycine, alanine, proline, serine and arginine on the carbon dioxide hydrate phase equilibrium condition using the isochoric T-cycle method in the pressure range of 2.53–4.0 MPa. The studied amino acids concentrations ranged from 5 to 20 wt. The presence of all the studied amino acids significantly shifted the carbon dioxide hydrate phase boundary to higher pressures and/or lower temperatures area, hence indicating inhibition effect. Glycine is found to show the highest inhibition strength with an average depression temperature of 1.83 K at 10 wt. In agreement with COSMO-RS sigma profile analysis, the amino acids inhibitions strengths are found to be influenced by their ability to reduce water activity in hydrate formation via hydrogen bonding with water molecules. The calculated carbon dioxide hydrate dissociation enthalpies in the presence of amino acids, suggested that, amino acids do not take part in carbon dioxide hydrate cage occupation and structure during hydrate formation. Furthermore, the measured carbon dioxide hydrate phase conditions in the presence of amino acids are predicted and are found to be in good agreement with the experimental data. © 2017 Elsevier Ltd Elsevier Ltd 2017 Article PeerReviewed https://www.scopus.com/inward/record.uri?eid=2-s2.0-85020044217&doi=10.1016%2fj.ces.2017.05.046&partnerID=40&md5=d1d44400857fe627db6220e1b4f8d191 Bavoh, C.B. and Partoon, B. and Lal, B. and Gonfa, G. and Foo Khor, S. and Sharif, A.M. (2017) Inhibition effect of amino acids on carbon dioxide hydrate. Chemical Engineering Science, 171 . pp. 331-339. http://eprints.utp.edu.my/19666/
institution Universiti Teknologi Petronas
collection UTP Institutional Repository
description The formation of gas hydrates hinders oil & gas transportation in pipelines, however, adequate knowledge and understanding of the gas hydrate phase behaviour is a key to its prevention. Thus, this study reports the inhibition effect of glycine, alanine, proline, serine and arginine on the carbon dioxide hydrate phase equilibrium condition using the isochoric T-cycle method in the pressure range of 2.53–4.0 MPa. The studied amino acids concentrations ranged from 5 to 20 wt. The presence of all the studied amino acids significantly shifted the carbon dioxide hydrate phase boundary to higher pressures and/or lower temperatures area, hence indicating inhibition effect. Glycine is found to show the highest inhibition strength with an average depression temperature of 1.83 K at 10 wt. In agreement with COSMO-RS sigma profile analysis, the amino acids inhibitions strengths are found to be influenced by their ability to reduce water activity in hydrate formation via hydrogen bonding with water molecules. The calculated carbon dioxide hydrate dissociation enthalpies in the presence of amino acids, suggested that, amino acids do not take part in carbon dioxide hydrate cage occupation and structure during hydrate formation. Furthermore, the measured carbon dioxide hydrate phase conditions in the presence of amino acids are predicted and are found to be in good agreement with the experimental data. © 2017 Elsevier Ltd
format Article
author Bavoh, C.B.
Partoon, B.
Lal, B.
Gonfa, G.
Foo Khor, S.
Sharif, A.M.
spellingShingle Bavoh, C.B.
Partoon, B.
Lal, B.
Gonfa, G.
Foo Khor, S.
Sharif, A.M.
Inhibition effect of amino acids on carbon dioxide hydrate
author_sort Bavoh, C.B.
title Inhibition effect of amino acids on carbon dioxide hydrate
title_short Inhibition effect of amino acids on carbon dioxide hydrate
title_full Inhibition effect of amino acids on carbon dioxide hydrate
title_fullStr Inhibition effect of amino acids on carbon dioxide hydrate
title_full_unstemmed Inhibition effect of amino acids on carbon dioxide hydrate
title_sort inhibition effect of amino acids on carbon dioxide hydrate
publisher Elsevier Ltd
publishDate 2017
url https://www.scopus.com/inward/record.uri?eid=2-s2.0-85020044217&doi=10.1016%2fj.ces.2017.05.046&partnerID=40&md5=d1d44400857fe627db6220e1b4f8d191
http://eprints.utp.edu.my/19666/
_version_ 1741196243503153152
score 11.62408

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