Doping amino acids with classical gas hydrate inhibitors to facilitate the hydrate inhibition effect at low dosages

2020 ◽  
Vol 10 (4) ◽  
pp. 783-794 ◽  
Author(s):  
M Fahed Qureshi ◽  
Majeda Khraisheh ◽  
Fares Almomani
Keyword(s):  
Amino Acids ◽  
Gas Hydrate ◽  
Inhibition Effect ◽  
Classical Gas

scholarly journals Effect of different D-amino acids on biofilm formation of mixed microorganisms

2021 ◽  
Author(s):  
Xinying Su ◽  
Xin Cheng ◽  
Yu Wang ◽  
Jintao Luo
Keyword(s):  
Amino Acids ◽  
Aspartic Acid ◽  
Biofilm Formation ◽  
Membrane Surface ◽  
Promoting Effect ◽  
Inhibition Effect ◽  
Excitation Emission Matrix ◽  
Reversible Adhesion ◽  
Adhesion Efficiency ◽  
Tyrosine D

Abstract This study aimed to determine the effects of D-tyrosine, D-aspartic acid, D-tryptophan and D-leucine on biofilm formation of mixed microorganisms. Results showed that, in the attachment stage, D-amino acids caused significant reduction in adhesion efficiency of mixed microorganisms to membrane surface. Moreover, D-amino acids have a promoting effect on the reversible adhesion of mixed microorganisms. The addition of D-amino acid generally inhibited the biofilm biomass, of which D-tyrosine has the best inhibition effect. With the effect of D-tyrosine, D-aspartic acid, D-tryptophan and D-leucine, the protein in extracellular polymeric substance (EPS) decreased by 8.21%, 7.65%, 3.51% and 11.31%, respectively. The carbohydrates in EPS decreased by 29.53%, 21.44%, 14.60% and 10.54%, respectively. The results of excitation-emission matrix spectra (EEMs) suggested that the structural properties of the tyrosine-like proteins, tryptophan-like protein and humic-like acid might have changed by the D-amino acids.

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.

Recovery of amino acids from reverse micellar solution by gas hydrate

2008 ◽  
Vol 86 (2) ◽  
pp. 209-213 ◽  
Author(s):  
Emine Bayraktar ◽  
Özlem Kocapiçak ◽  
Ülkü Mehmetoğlu ◽  
Mahmut Parlaktuna ◽  
Tanju Mehmetoğlu
Keyword(s):  
Amino Acids ◽  
Gas Hydrate ◽  
Micellar Solution ◽  
Reverse Micellar

scholarly journals Abnormal incorporation of amino acids into the gas hydrate crystal lattice

2014 ◽  
Vol 16 (48) ◽  
pp. 26730-26734 ◽  
Author(s):  
Jeong-Hoon Sa ◽  
Gye-Hoon Kwak ◽  
Bo Ram Lee ◽  
Docheon Ahn ◽  
Kun-Hong Lee
Keyword(s):  
Amino Acids ◽  
Crystal Lattice ◽  
Gas Hydrate ◽  
Hydrate Crystal

scholarly journals Hydrophobic amino acids as a new class of kinetic inhibitors for gas hydrate formation

2013 ◽  
Vol 3 (1) ◽  
Author(s):  
Jeong-Hoon Sa ◽  
Gye-Hoon Kwak ◽  
Bo Ram Lee ◽  
Da-Hye Park ◽  
Kunwoo Han ◽  
...  
Keyword(s):  
Amino Acids ◽  
Gas Hydrate ◽  
Hydrate Formation ◽  
New Class ◽  
Gas Hydrate Formation ◽  
Hydrophobic Amino Acids
Sign in / Sign up

Export Citation Format

Share Document