Screening of Amino Acids and Surfactant as Hydrate Promoter for CO2 Capture From Flue Gas

Jyoti Shanker Pandey, Yousef Jouljamal Daas, Nicolas von Solms*

*Corresponding author for this work

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Abstract

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.
Original languageEnglish
Article number124
JournalProcesses
Volume8
Number of pages23
ISSN2227-9717
DOIs
Publication statusPublished - 2020

Bibliographical note

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited

Keywords

  • Flue gas hydrate
  • Amino Acids
  • CO2 Capture
  • Sodium dodecyl sulfate

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