Development of an ethanolic two-phase system (ETPS) based on polypropylene glycol 2000 + ethylene glycol + ethanol for separation of hydrophobic compounds

2021 ◽  
Author(s):  
Filipe Smith Buarque ◽  
Cleide Mara Faria Soares ◽  
Ranyere Lucena de Souza ◽  
Matheus Mendonça Pereira ◽  
Álvaro Silva Lima
Keyword(s):  
Ethylene Glycol ◽  
Phase System ◽  
Polypropylene Glycol ◽  
Two Phase ◽  
Hydrophobic Compounds ◽  
Ethanol Content ◽  
Coexisting Phases ◽  
Phase Water ◽  
High Ethanol

Two-phase water-free systems containing high ethanol content in the coexisting phases can selectively partition hydrophobic molecules from natural biomass.

Ethanolic two-phase system formed by polypropylene glycol, ethylene glycol and/or ionic liquid (phase-forming or adjuvant) as a platform to phase separation and partitioning study

2021 ◽  
pp. 117702
Author(s):  
Filipe S. Buarque ◽  
David E. M. Guimarães ◽  
Cleide M. F. Soares ◽  
Ranyere L. Souza ◽  
Matheus M. Pereira ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Phase Separation ◽  
Liquid Phase ◽  
Ethylene Glycol ◽  
Phase System ◽  
Polypropylene Glycol ◽  
Two Phase

scholarly journals Partitioning of bovine lactoferrin in aqueous two-phase system containing poly(ethylene glycol) and sodium citrate

2015 ◽  
Vol 95 ◽  
pp. 118-124 ◽  
Author(s):  
Angélica Ribeiro da Costa ◽  
Jane Sélia dos Reis Coimbra ◽  
Luísa Alexandre Ferreira ◽  
João Carlos Marcos ◽  
Igor José Boggione Santos ◽  
...  
Keyword(s):  
Ethylene Glycol ◽  
Sodium Citrate ◽  
Bovine Lactoferrin ◽  
Phase System ◽  
Poly Ethylene Glycol ◽  
Two Phase ◽  
Aqueous Two Phase System ◽  
Poly Ethylene

Distribution of the Oil Phase Obtained Upon Imbibition of Water

1964 ◽  
Vol 4 (01) ◽  
pp. 49-55 ◽  
Author(s):  
Pietro Raimondi ◽  
Michael A. Torcaso
Keyword(s):  
Primary Production ◽  
Relative Permeability ◽  
Water Saturation ◽  
Initial Conditions ◽  
Flow Behavior ◽  
Phase System ◽  
Residual Oil ◽  
Two Phase ◽  
Connate Water ◽  
Phase Water

Abstract The distribution of the oil phase in Berea sandstone resulting from increasing and decreasing the water saturation by imbibition was investigated Three types of distribution were recognized: trapped, normal and lagging. The amount of oil in each of these distributions was determined as a function of saturation by carrying out a miscible displacement in the oil phase under steady-state conditions of saturation. These conditions were maintained by flowing water and oil simultaneously in given ratios and by using a displacing solvent having essentially the same density and viscosity as the oil.A correlation shows the amount of trapped oil at any saturation to be directly proportional to the conventional residual oil saturation Sir The factor of proportionality is related to the fractional permeability to the water phase. Part of the oil which was not trapped was displaced in a piston- like manner (normal part) and part was eluted gradually (lagging part). The observed phenomena are more than of mere academic importance. Oil which is trapped may well provide the fuel essential for forward combustion and thus be beneficial. On the contrary, in tertiary recovery operations, it is this trapped oil which seems to make current techniques uneconomic. Introduction A typical oilfield may initially contain connate water and oil. After a period of primary production water often enters the field either from surrounding aquifers or from surface injection. During primary production evolution and establishment of a free gas saturation usually occurs. The effect and importance of this third phase is fully recognized. However, this investigation is limited to a two- phase system, one wetting phase (water) and one non-wetting phase (oil). The increase in water content of a water-wet system is termed imbibition. In a relative permeability-saturation diagram such as the one shown in Fig. 1, the initial conditions of the field would he represented by a point below a water saturation of about 35 per cent, i.e., where the imbibition and the drainage curves to the non-wetting phase nearly coincide. When water enters the field the relative permeability to oil decreases along the imbibition curve. At watered-out conditions the relative permeability to the oil becomes zero. At this point a considerable amount of oil, called residual oil, (about 35 per cent in Fig. 1) remains unrecovered. Any attempt to produce this oil will require that its saturation be increased. In Fig. 1 this would mean retracing the imbibition curve upwards. In addition, processes like alcohol and fire flooding, which can be employed at any stage of production, involve the complete displacement of connate water and an increase, or imbibition, of water saturation ahead of the displacing front. Thus, in several types of oil production it is the imbibition-relative permeability curve which rules the flow behavior. For this reason a knowledge of the distribution of the non-wetting phase, as obtained through imbibition, whether "coming down" or "going up" on the imbibition curve, is important. SPEJ P. 49^

Partitioning and extraction of collagenase from Penicillium aurantiogriseum in poly(ethylene glycol)/phosphate aqueous two-phase system

2012 ◽  
Vol 335 ◽  
pp. 20-25 ◽  
Author(s):  
Bruno Ubertino Rosso ◽  
Carolina de Albuquerque Lima ◽  
Tatiana Souza Porto ◽  
Cynthia de Oliveira Nascimento ◽  
Adalberto Pessoa ◽  
...  
Keyword(s):  
Ethylene Glycol ◽  
Phase System ◽  
Poly Ethylene Glycol ◽  
Two Phase ◽  
Aqueous Two Phase System ◽  
Penicillium Aurantiogriseum ◽  
Poly Ethylene

Amino acids partitioning in aqueous two-phase system of polypropylene glycol and magnesium sulfate

2007 ◽  
Vol 858 (1-2) ◽  
pp. 234-238 ◽  
Author(s):  
Alireza Salabat ◽  
Mohammad H. Abnosi ◽  
Azadeh R. Bahar
Keyword(s):  
Amino Acids ◽  
Magnesium Sulfate ◽  
Phase System ◽  
Polypropylene Glycol ◽  
Two Phase ◽  
Aqueous Two Phase System

Pressure Transient Analysis for Two-Phase (Water/Steam) Geothermal Reservoirs

1980 ◽  
Vol 20 (03) ◽  
pp. 206-214 ◽  
Author(s):  
S.K. Garg
Keyword(s):  
Transient Analysis ◽  
Phase System ◽  
Well Testing ◽  
Two Phase ◽  
Pressure Transient Analysis ◽  
Water Steam ◽  
Pressure Transient ◽  
Geothermal Reservoirs ◽  
Diffusivity Equation ◽  
Phase Water

Pressure Transient Analysis for Two-Phase Pressure Transient Analysis for Two-Phase (Water/Steam) Geothermal Reservoirs Abstract A new diffusivity equation for two-phase (water/steam) flow in geothermal reservoirs is derived. The geothermal reservoir may be initially two-phase or may evolve into a two-phase system during production. Solutions of the diffusivity equation for a continuous line source are presented; the solutions imply that the plot of bottomhole pressure vs. loglot (t=time) should be a straight pressure vs. loglot (t=time) should be a straight line. The slope of the straight line is inversely proportional to the total kinematic mobility. proportional to the total kinematic mobility. Comparison of the theory with a limited number of computer-simulated drawdown histories shows excellent agreement. Introduction In petroleum engineering and groundwater hydrology, well tests are conducted routinely to diagnose the well's condition and to estimate formation properties. Well test data may be analyzed to yield quantitative information regarding (1) formation permeability, storativity, and porosity, (2) the presence of barriers and leaky boundaries, (3) the condition of the well (i.e., damaged or stimulated), (4) the presence of major fractures close to the well, and (5) the mean formation pressure. Well testing procedures (and the quality of information obtained) procedures (and the quality of information obtained) depend on the age of the well. During temporary completion, testing involves producing the reservoir using a temporary plumbing system (e.g., drillstem testing), and the estimates obtained for the formation parameters are not very accurate. After completion, parameters are not very accurate. After completion, testing usually is performed in the hydraulic mode. In hydraulic testing, one or more wells are produced at controlled rates, and pressure changes within the producing well itself or nearby observation wells producing well itself or nearby observation wells (interference tests) are monitored.A major concern of well testing is the interpretation of pressure transient data. Much of the existing literature deals with isothermal single-phase (water/oil) and isothermal two-phase (oil with gas in solution, free gas) systems. In general, there is a lack of methodology for analyzing nonisothermal reservoir systems, either single- or two-phase (water/steam). Geothermal reservoirs commonly involve nonisothermal two-phase flow during well testing. This paper presents a theoretical framework for analyzing multiphase pressure transient data in geothermal systems. Two-Phase Flow in Geothermal Systems Consider a fully penetrating well located in an infinite reservoir of thickness h. We neglect any variations in either formation or fluid properties in the vertical direction. (This is a common assumption in pressure transient analysis.) The geothermal system may be two-phase before production or may evolve into a two-phase system as a result of fluid production. In the latter case, a boiling front will production. In the latter case, a boiling front will propagate outward from the wellbore. The boiling propagate outward from the wellbore. The boiling front may be treated as a constant-pressure boundary (p=saturation pressure corresponding to the local reservoir temperature).For the sake of simplicity, consider a reservoir that is initially two-phase everywhere. Furthermore, it is convenient to assume that the pressure (and, hence, temperature) is uniform throughout the system. In radial geometry, the pressure response is governed by the following diffusivity equation (see Appendix for a derivation of Eq. 1). (1) SPEJ P. 206

scholarly journals Extraction of Fe (III) and Zn (II) by ionic liquids in a system based on polypropylene glycol 425 and sodium chloride.

2020 ◽  
Vol 11 (3-2020) ◽  
pp. 72-75
Author(s):  
I. V. Zinov’eva ◽  
◽  
M. I. Fedorova ◽  
Yu. A. Zakhodyaeva ◽  
A.A. Voshkin ◽  
...  
Keyword(s):  
Experimental Study ◽  
Ionic Liquids ◽  
Sodium Chloride ◽  
Phase System ◽  
Polypropylene Glycol ◽  
Two Phase ◽  
Study Results ◽  
Aqueous Two Phase Systems ◽  
Phase Systems ◽  
Extraction Of Metals

This work presents the experimental study results of Fe(III) and Zn(II) extraction by ionic liquids based on trioctylmethylammonium chloride and rhodanide in an aqueous two-phase system based on polypropylene glycol 425 and sodium chloride. Based on the results obtained, it was concluded that these extractants are effective for the extraction of metals from aqueous solutions, and aqueous two-phase systems represent a “green” alternative to traditional extraction systems.

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