scholarly journals INVESTIGATION OF EFFICIENCY OF NATURAL GAS DRYING BY ABSORPTION AND ADSORPTION METHODS

2020 ◽  
pp. 19-28
Author(s):  
Л. Ш. Махмудова ◽  
Х. Х. Ахмадова ◽  
Ж. Т. Хадисова ◽  
З. А. Абдулмежидова ◽  
Э. У. Идрисова
Keyword(s):  
Natural Gas ◽  
Aqueous Solutions ◽  
Adsorption Activity ◽  
Hydrogen Mixture ◽  
Ethylene Glycols ◽  
Modern Methods ◽  
Solid Adsorbents ◽  
Bentonite Clays

В статье проанализированы современные методы осушки природного газа для дальнейшей переработки его в метано-водородную смесь. Приведены результаты исследования абсорбционной и адсорбционной осушки природного газа жидкими реагентами (этиленгликолями) и твердыми адсорбентами (цеолитами и бентонитами). Показано, что природные бентонитовые глины обладают сравнительно небольшой адсорбционной активностью, их активация водными растворами Na2CО3 и H2SO4 способствует повышению адсорбционной активности, и их применение в комплексе с другими адсорбентами способствует значительному повышению процессов адсорбции. Авторами показана возможность и необходимость дальнейших исследований поиска эффективных методов активации бентонитовых глин. The article analyzes modern methods of drying natural gas for further processing it into a methane- hydrogen mixture. The results of studies of absorption and adsorption drying of natural gas with liquid reagents (ethylene glycols) and solid adsorbents (zeolites and bentonites) are presented. It is shown that natural bentonite clays have a relatively small adsorption activity, their activation with aqueous solutions of Na2CO3 and H2SO4 increases the adsorption activity, and their use in combination with other adsorbents contributes to a significant increase in the adsorption processes.The authors show the possibility and necessity of further research to find effective methods of activation of bentonite clays.

scholarly journals Removal of Pesticides from Aqueous Solutions by Adsorption on Zeolites as Solid Adsorbents

2015 ◽  
Vol 33 (5) ◽  
pp. 457-485 ◽  
Author(s):  
C. De Smedt ◽  
F. Ferrer ◽  
K. Leus ◽  
P. Spanoghe
Keyword(s):  
Aqueous Solutions ◽  
Solid Adsorbents

scholarly journals COMPARISON OF GAZKONDNAFTA AND HYSYS SOFTWARE SYSTEMS IN THE FIELD OF COMPUTER MODELING OF OIL AND GAS TECHNOLOGIES

2021 ◽  
pp. 4-22
Author(s):  
O.V. Kalashnikov ◽  
S.V. Budniak ◽  
Yu.V. Ivanov ◽  
Yu.M. Belyansky ◽  
N.O. Aptulina ◽  
...  
Keyword(s):  
Natural Gas ◽  
Thermodynamic Properties ◽  
Aqueous Solutions ◽  
Computer Modeling ◽  
Oil And Gas ◽  
Software Systems ◽  
Program System ◽  
Aspen Hysys ◽  
Treatment Processes ◽  
Liquid Phases

The experimental and calculated according to program systems GasCondOil, Aspen-HYSYS and PRO-II compositions of the gas — liquid phases (hydrocarbon and aqueous solutions) and their thermodynamic properties are compared, as well as the accuracy of technological calculations of field pipelines and natural gas and oil treatment processes. It is shown that some of the field technological processes, calculated by the program system GasCondOil, are not modeled on Aspen-HYSYS. Bibl. 16, Fig. 9, Tab. 15.

Adsorption of polyethyleneimine from aqueous solutions on bentonite clays

2002 ◽  
Vol 55 (1-2) ◽  
pp. 73-76 ◽  
Author(s):  
Nevin Öztekin ◽  
Ayşe Alemdar ◽  
Nurfer Güngör ◽  
F.Bedia Erim
Keyword(s):  
Aqueous Solutions ◽  
Bentonite Clays

Adsorption of Tetracyclin Hydrochloride from Aqueous Solutions on Activated Carbons

2019 ◽  
Vol 7 (3) ◽  
pp. 3-9
Author(s):  
Л. Григорьев ◽  
L. Grigorev ◽  
О. Шанова ◽  
O. Shanova ◽  
Л. Веренцова ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Aqueous Solutions ◽  
Kinetic Data ◽  
Activated Carbons ◽  
Sufficient Accuracy ◽  
Equilibrium Adsorption ◽  
Practical Application ◽  
Adsorption Activity ◽  
Two Samples ◽  
Kinetic Equilibrium

Have been studied kinetic, equilibrium, and dynamic conditions for adsorption of tetracycline hydrochloride from aqueous solutions on two samples of industrial activated carbons SKT and BAU-A. It has been determined that the kinetic data of adsorption can be approximated with sufficient accuracy by the Glückauf equation. To calculate tetracycline hydrochloride’s equilibrium adsorption, it has been proposed to use the Dubinin-Radushkevich equation, and to calculate the adsorption duration — the Dubinin-Nikolaev equation. The possibility for practical application of activated carbons for wastewater treatment from antibiotics has been demonstrated, and ways for increasing of these carbons’ adsorption activity have been proposed.

Activity coefficient at infinite dilution of aqueous solutions of nonionic hydrocarbon and fluorocarbon surfactants as well as their ternary mixtures

2015 ◽  
Vol 70 (1) ◽  
Author(s):  
Katarzyna Szymczyka ◽  
Anna Tarabab
Keyword(s):  
Aqueous Solutions ◽  
Activity Coefficients ◽  
Infinite Dilution ◽  
Ternary Mixtures ◽  
Interface Tension ◽  
Surface Tension Data ◽  
Ethylene Glycols ◽  
Solid Liquid Interface ◽  
Triton X ◽  
Solid Liquid

AbstractActivity coefficients at infinite dilution of the aqueous solutions of nonionic hydrocarbon surfactants, p-(1,1,3,3- tetramethylbutyl) phenoxypoly(ethylene glycols), Triton X-100 (TX100) and Triton X-165 (TX165), fluorocarbon surfactants, Zonyl FSN-100 (FSN100) and Zonyl FSO-100 (FSO100) and their ternary mixtures were determined from the Gracia-Fadrique et al. method for non-volatile compounds. The values of activity coefficients were calculated taking into account the surface tension data of the studied systems at 293K and compared to those determined on the basis of the values of the contact angle of solutions on the polytetrafluoroethylene (PTFE) and polymethyl methacrylate (PMMA) surfaces and the solid-liquid interface tension.

scholarly journals Volumetric Properties of Aqueous Solutions of Ethylene Glycols in the Temperature Range of 293.15–318.15 K

2014 ◽  
Vol 2014 ◽  
pp. 1-10 ◽  
Author(s):  
Omer El-Amin Ahmed Adam ◽  
Ammar Hani Al-Dujaili ◽  
Akl M. Awwad
Keyword(s):  
Thermal Expansion ◽  
Aqueous Solutions ◽  
Thermal Expansion Coefficient ◽  
Expansion Coefficient ◽  
Infinite Dilution ◽  
Partial Molar Volumes ◽  
Volumetric Properties ◽  
Molar Volumes ◽  
Ethylene Glycols ◽  
Increasing Temperature

Densities of aqueous solutions of Ethylene glycol (EG), diethylene glycol (DEG), and triethylene glycol (TEG) were measured at temperatures from 293.15 to 318.15 K and molalities ranging from 0.0488 to 0.5288 mol·kg−1. Volumes of all investigated solutions at a definite temperature were linearly dependent on the solute molality; from this dependence the partial molar volumes at infinite dilution were determined for all solutes. It was found that the partial molar volumes at infinite dilution V-2,0 were concentration independent and slightly increase with increasing temperature. The partial molar volumes at infinite dilution V-2,0 or the limiting apparent molar volumes of ethylene glycols were fitted to a linear equation with the number of oxyethylene groups (n) in the solute molecule. From this equation a constant contribution of the terminal (OH) and the (CH2CH2O) groups to the volumetric properties was obtained. The thermal expansion coefficient (α1,2) for all investigated solutions was calculated at temperatures from 293.15 to 318.15 K. The thermal expansion coefficients for all solutes increase with increasing temperature and molality. Values of (α1,2) were higher than the value of the thermal expansion coefficient of the pure water.

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