The impact of methionine, tryptophan and proline on methane (95%)-propane (5%) hydrate formation

Date

2021-10-01

Author

Longinos, Sotirios Nik
Longinou, Dimitra-Dionisia
Parlaktuna, Mahmut
Toktarbay, Zhexenbek

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

276
views

0
downloads

This study examines the impact of three amino acids such as proline, methionine and tryptophan on methane (95%)-propane (5%) hydrate formation with the use of different impellers. The concentration of amino acids was 1 wt% at 24.5 bar and 2 degrees C. Based on experimental outcomes proline behaves as inhibitor and methionine and tryptophan perform as promoters. RT experiments both formed more quickly gas hydrates and indicated higher values in rate of hydrate formation compared to PBTU and PBTD experiments showing that in radial flow bubbles are subjected to higher shear stresses, their size are reduced, so that the contact surface is increased resulting in an improved mass transfer coefficient.

Subject Keywords

Amino acids , Rate of hydrate formation , Single impeller , Induction time , Hydrates

URI

https://hdl.handle.net/11511/94458

Journal

REACTION KINETICS MECHANISMS AND CATALYSIS

DOI

https://doi.org/10.1007/s11144-021-02089-3

Collections

Department of Petroleum and Natural Gas Engineering, Article

Suggestions

OpenMETU
Core

The Effect of oxygen transfer conditions on recombinant glucose isomerase production by Pichia pastoris under glyceraldehyde-3-phosphate dehydrogenase promoter Güneş, Hande; Çalık, Pınar; Özdamar, Tunçer H.; Department of Chemical Engineering (2015) The aim of this study is to investigate effects of oxygen transfer conditions on recombinant glucose isomerase (r-GI) production by Pichia pastoris under glyceraldehyde-3-phosphate dehydrogenase promoter (PGAP). Two different sets of operation strategies were investigated in terms of oxygen transfer conditions. In the first one, aeration rate was kept constant at QO/V = 3 vvm, 6 vvm, and 10 vvm while agitation rate was kept at N = 900 rpm; and in the second one, dissolved oxygen concentration was kept const...
The effect of aromatic diboronic acid on characteristics of polybenzoxazine based on phenol and 4-aminomethylbenzoate İPEK, HALİL; Hacaloğlu, Jale (2018-11-23) In this study, a polybenzoxazine, (PPab) based on phenol and 4-aminomethyl benzoate and its composites containing various amounts of 1,4-benzene diboronic acid, (BDBA) were synthesized by stepwise curing. It has been determined that both thermal stability and char yield were increased as the amount of BDBA incorporated was increased. The improvements in thermal characteristics were associated with condensation reactions of B-OH of BDBA and not only with hydroxyl groups of polybenzoxazine but also ester grou...
Examination of behavior of lysine on methane (95%)-propane (5%) hydrate formation by the use of different impellers Longinos, Sotirios Nik; Parlaktuna, Mahmut (2021-03-01) Hydrate formation characteristics and hydrodynamic behavior have been investigated for mixture of methane-propane hydrate formation with pure water and with the amino acid of lysine 1.5 wt% at 24.5 bars and 2 degrees C. There were total 12 experiments with full and no baffle estimating the induction time, rate of hydrate formation, hydrate productivity and power consumption. The outcomes showed that radial flow experiments with radial flow have better behavior compared to mixed flow ones due to better inter...
The effect of cysteine-43 mutation on thermostability and kinetic properties of citrate synthase from Thermoplasma acidophilum Kocabıyık, Semra; Russel, RJM; Danson, MJ; Hough, DW (Elsevier BV, 1996-07-05) In this study, we have substituted serine-43 by cysteine in the recombinant citrate synthase from a moderately thermophilic Archaeon Thermoplasma acidophilum, for site-specific attachment of labels and have investigated the effects of this mutation on the biochemical properties and thermal stability of the enzyme. Both wild-type and the mutant enzymes were purified to homogenity using affinity chromatography on Matrex Gel Red A. The mutant Thermoplasma citrate synthase is very similar to wild-type citrate s...
The effect of arginine-428 mutation on modulation of activity of human liver flavin monooxygenase 3 (FMO3) by imipramine and chlorpromazine Adalı, Orhan; Philpot, RM (1999-07-01) This study was carried out to investigate the molecular basis for modulation of recombinant FMO3-catalyzed activity by the tricyclicantidepressants, imipramine and chlorpromazine. A mutant of human liver FMO3 (T428R) was formed by site-directed mutagenesis and characterized along with the native enzyme in order to elucidate a possible structure-function relationship. Functional properties of native and T428R human FMO3s were studied with methimazole as substrate. Both enzymes catalyzed the S-oxidation of me...

Citation Formats

S. N. Longinos, D.-D. Longinou, M. Parlaktuna, and Z. Toktarbay, “The impact of methionine, tryptophan and proline on methane (95%)-propane (5%) hydrate formation,” REACTION KINETICS MECHANISMS AND CATALYSIS, pp. 0–0, 2021, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/94458.