Promotion effect of polymers and surfactants on hydrate formation rate

Karaaslan, U
Parlaktuna, Mahmut
The promotion effect of two polymers and three surfactants on methane hydrate formation was investigated in a high-pressure system. For all of the tested chemicals, 1 wt % aqueous solutions were prepared and methane hydrate was formed in those media to detect their effect on hydrate formation rate. It was determined that Igepal-520 is the most effective promoter on methane hydrate formation rate with respect to a reference test carried out by using only pure water.


Hydrate Inhibition with PEO (Poly 2-ethyl-2-oxazoline)
Bulbul, S.; Kadoura, A. S.; Merey, S.; Parlaktuna, Mahmut (2014-01-01)
This study is aimed at investigating the effects of a poly 2-ethyl-2-oxazoline-type polymer on the prevention of methane hydrate formation. During the study, seven experiments with low concentrations of poly 2-ethyl-2-oxazoline (0 to 1 wt%) were run in a batch-type reactor. The analysis of the experimental study indicates that poly 2-ethyl-2-oxazoline can be considered as a potential kinetic inhibitor for hydrate formation.
Investigation of extraction methodologies for quantitative determination of polycyclic aromatic hydrocarbons in sediments
Topal, Tansel; Tuncel, Semra G.; Department of Chemistry (2011)
The extraction procedures for the determination of polycyclic aromatic hydrocarbons (PAH) concentrations in sediment samples had been developed by using GC-FID and GC-MS. The optimized methods were soxhlet extraction, ultrasonic bath extraction and solid phase micro extraction (SPME). In order to search out the main factors affecting extraction efficiencies of the methods, factorial design was used. The best extraction method was chosen and optimum values for main factors were selected for the development o...
Experimental investigation of carbon dioxide injection effects on methane-propane-carbon dioxide mixture hydrates
Abbasov, Abbas; Merey, Sukru; Parlaktuna, Mahmut (2016-08-01)
In this research, first, hydrate with high saturation in porous media (sand sediments) was formed in fully filled high pressure cell by using a mixture of the following gases at 4 degrees C: methane (CH4), propane (C3H8) and carbon dioxide (CO2). The feed mole percent of the gases used was selected as follows: CH4 (95%), C3H8 (3%), CO2 (2%). This selection was made in order to form natural gas hydrate of thermogenic origin (sII type hydrate). Thereafter, CO2 injection into the high saturation hydrate media ...
On the dissociation of natural gas hydrates from surfactant solutions
Karaaslan, U; Parlaktuna, Mahmut (2001-01-01)
Natural gas hydrates from different types and concentrations of surfactant solutions were produced and dissociated in a high-pressure cell. The Clausius-Clapeyron equation was utilized to derive the enthalpy related to the phase transition of the gas component from dissociation data. The results indicated that the phase change enthalpy of the nonionic surfactant solution hydrate is higher compared to that of pure-water and anionic surfactant solution hydrates. Experimental results also show that surfactants...
Hydrate Formation Conditions of Methane Hydrogen Sulfide Mixtures
Bulbul, S.; Parlaktuna, Mahmut; Mehmetoglu, T.; Karabakal, U. (2014-01-01)
The objective of the study is to determine hydrate formation conditions of methane-hydrogen sulfide mixtures. An experimental work is carried out with different H2S concentrations and both brine and distilled water. The Black Sea conditions, which are suitable for methane-hydrogen sulfide hydrate formation, are examined. Effects of H2S concentration and salinity on the hydrate formation conditions are also obtained during the study. It is concluded that an increase in the salinity shifts the methane-hydroge...
Citation Formats
U. Karaaslan and M. Parlaktuna, “Promotion effect of polymers and surfactants on hydrate formation rate,” ENERGY & FUELS, pp. 1413–1416, 2002, Accessed: 00, 2020. [Online]. Available: