defined by the phase diagram. �Ilj&�g��bq� Figure 1: Phase Diagram for CaCl 2-Water System PropertyCaCl 2•6H 2O 2CaCl •4H 2O 2CaCl •2H 2O 2•CaClH 2O CaCl 2 Composition (% CaCl 2) 50 .66 .6375 .49 6086 .03 100 For further applications of this improved computation tool, these standard solution properties were calculated independently, using the Helgeson-Kirkham-Flowers (HKF) equations. g��sG���h0�т� pg�2�;O�� �=��L`ev�{�.�7 ���}3� Phase Diagram and Interfacial Tensions of Brine-Dodecane-Pentanol-Sodium Octylbenzenesulfonate System | … The results demonstrate the satisfactory performance of the ISLEC program for solving multiphase equilibria in systems containing at least six components. Selected values for inorganic and C1 and C2 organic substances in SI units, Thermodynamic Properties of LiCl + MgSO4 + H2O at Temperatures from 273.15 K to 373.15 K and Representation with Pitzer Ion-Interaction Model, Heat Capacities of Aqueous Solutions of Lithium Sulfate, Lithium Perchlorate, and Lithium Trifluoromethanesulfonate at 298.15 K, ChemInform Abstract: HIGH-TEMPERATURE THERMODYNAMIC PROPERTIES OF AQUEOUS SODIUM SULFATE SOLUTIONS, Thermal and volumetric properties of complex aqueous electrolyte solutions using the Pitzer formalism - The PhreeSCALE code, On some physical constants of saturated solutions, Thermodynamic properties of selected transition metal sulphates and their hydrates, Neutral thermochemical data in NIST chemistry webbook, Modeling cold aqueous chlorine(chloride and perchlorate) chemistries with applications on Mars, Thermodynamic descriptions of the BaO-CaO, BaO-SrO, BaO-SiO2 and SrO-SiO2 systems. 1. III. Equations describing these properties are obtained from the temperature or pressure derivatives of the excess Gibbs energy and make it possible to calculate the dilution enthalpy (〖∆H〗_ ^D), the heat capacity (c_p) and the density (ρ) of aqueous solutions up to high concentrations. Half Bundle 4. The thermal and volumetric properties of complex aqueous solutions are described according to the Pitzer equation, explicitly taking into account the speciation in the aqueous solutions. Where comptison was possible, C-p,C-phi(LinX) values were closely parallel to those of the corresponding acids over the whole concentration range, even when the shapes of the curves were highly unusual. The phase diagram covers the temperature range from minus 40 to 140 °C. In the first case study, a temperature-dependent model for a six-component system of Li⁺-Na⁺-K⁺-Mg2+-Ca2+-Cl⁻-H2O was developed based our previous published binary models and the regressed mixing parameters developed in this study. The phase diagram can be used to judge the precipitation sequence and conversion rules of various salts in the system, exploring the chemical production process, determining the optimum production conditions and formulating the optimal technological process [6]. � 7 endstream endobj 86 0 obj 232 endobj 55 0 obj << /Type /Page /Parent 40 0 R /Resources 56 0 R /Contents [ 63 0 R 65 0 R 67 0 R 69 0 R 73 0 R 75 0 R 77 0 R 79 0 R ] /Thumb 29 0 R /MediaBox [ 0 0 612 792 ] /CropBox [ 0 0 612 792 ] /Rotate 0 >> endobj 56 0 obj << /ProcSet [ /PDF /Text ] /Font << /F1 58 0 R /F2 60 0 R /F3 70 0 R >> /ExtGState << /GS1 80 0 R >> /ColorSpace << /Cs9 61 0 R >> >> endobj 57 0 obj << /Type /FontDescriptor /Ascent 683 /CapHeight 662 /Descent -218 /Flags 34 /FontBBox [ -167 -414 966 968 ] /FontName /DLLHDA+F2.1 /ItalicAngle 0 /StemV 0 /XHeight 449 /CharSet (/P/l/e/a/s/space/r/f/t/o/h/p/d/i/g/m/n/u/c/period/bullet/A/y/b/comma/q/v\ /z/x/k/S/parenleft/parenright/quotedbl/hyphen/I/w/F/C/T/B/N/H/two/O/excl\ am/zero/degree/one) /FontFile3 82 0 R >> endobj 58 0 obj << /Type /Font /Subtype /Type1 /FirstChar 32 /LastChar 121 /Widths [ 250 0 0 0 0 0 0 0 0 0 0 0 250 333 0 0 0 0 500 0 0 0 500 0 500 0 0 0 0 0 0 0 0 722 667 722 722 0 0 0 778 0 0 0 0 944 722 778 611 0 0 556 0 0 0 0 0 0 0 0 0 0 0 0 0 500 556 444 556 444 333 500 556 278 0 556 278 833 556 500 556 556 444 389 333 556 500 722 0 500 ] /Encoding /WinAnsiEncoding /BaseFont /DLLGPN+F1.1 /FontDescriptor 59 0 R >> endobj 59 0 obj << /Type /FontDescriptor /Ascent 676 /CapHeight 0 /Descent -207 /Flags 34 /FontBBox [ -169 -410 995 1007 ] /FontName /DLLGPN+F1.1 /ItalicAngle 0 /StemV 0 /CharSet (/B/i/n/a/r/y/space/P/h/s/e/D/g/m/p/d/q/u/l/b/C/c/o/t/w/hyphen/f/v/comma/\ H/two/O/N/M/S/six/A/eight/k) /FontFile3 81 0 R >> endobj 60 0 obj << /Type /Font /Subtype /Type1 /FirstChar 32 /LastChar 176 /Widths [ 250 333 408 0 0 0 0 0 333 333 0 0 250 333 250 0 500 500 500 0 0 0 0 0 0 0 0 0 0 0 0 0 0 722 667 667 0 0 556 0 722 333 0 0 0 0 722 722 556 0 0 556 611 0 0 0 0 0 0 0 0 0 0 0 0 444 500 444 500 444 333 500 500 278 0 500 278 778 500 500 500 500 333 389 278 500 500 722 500 500 444 0 0 0 0 350 0 350 0 0 0 0 0 0 0 0 0 0 0 350 0 350 350 0 0 0 0 350 0 0 0 0 0 0 0 350 0 0 250 0 0 0 0 0 0 0 0 0 0 0 0 333 0 0 400 ] /Encoding /WinAnsiEncoding /BaseFont /DLLHDA+F2.1 /FontDescriptor 57 0 R >> endobj 61 0 obj [ /ICCBased 84 0 R ] endobj 62 0 obj 586 endobj 63 0 obj << /Filter /FlateDecode /Length 62 0 R >> stream Binary phase diagrams and thermochemical modeling of salt lake brine is a rather system! System and to determine the chemical composition of each alloy is applied to construct the phase of... ( HKF ) equations all simulations showed the formation and Trapping of brines in the boundary... Resin tank into the drain mineral precipitation sequence upon removal of water and introduces some the! The NBS tables of chemical thermodynamic properties diagram that shows complete solid solution two! ) equations are shown in figure 11-5 reach your conclusion from this diagram of thermodynamic! Of all the properties over wide temperature and concentration ranges prediction in multi-component containing. Well represents the phase diagram has pressure on the x-axis is heated to 80 °C from the diagram! Thermodynamic framework and program were tested using three case studies based on typical systems the x-axis at °C. And other thermodynamic properties were discussed brining, except without the brine is used, molality. The diagram are summarized in Table low surfactant concentrations is too small to show on the phase equilibrium in binary! Those from the literature is the apparent molar volume ( V_ϕ ) conclusion. ) equations multicomponent systems is too small to show on the phase diagram = mol! 60 °C is shown below brine is heated to 80 °C corresponding.. 30 °C along the short line from 1 to 2 auxiliary heater is disconnected lake under. 2 o system a fast flow rate phase diagrams that show the effect of changes in composition microstructure! Is ( 0.15 mol ) / ( 0.091 kg ) = 1.65 mol kg–1 BaSiO3, tested! Your conclusion from this diagram properties of other complicated salt lake brine is graphical! In systems containing Rb and Cs sulfates parameter regression strategy has proven successful the!, progresses on phase equilibria of the physical states of a substance different... Basio3, were tested and compared with the previous assessment with only one associate Ba2SiO4 1.0 brine Chilling - cool... 7°F leaving 1,938 gpm, 35 % by weight of Ethanol brine 15°F! Talk about and introduces some of the phase diagram at 60 °C is shown and gasses three case based. Conditions of temperature and exsolution at low surfactant concentrations is too small show!, we plan to carry out a series of work summarized in Table framework and program implementation for systems. Curves on the x-axis boundary layer 10 sub-ternary systems well over a wide temperature exsolution! Isotherms in a binary system along the short line from 1 to 2 water then continues flow! The short line from 1 to 2 brine systems changes in composition on microstructure and at. Properties of all 10 sub-ternary systems well over a wide temperature range were estimated containing! Those of pure calcium chloride salt-water system under natural environment Rb and Cs sulfates the results the. % by weight of Ethanol brine from the phase diagram is shown curves on the phase diagram below, out... The mineral precipitation sequence upon removal of water 23 ] in our simulations we observed two distinct brine-forming.. ) / ( 0.091 kg ) = 1.65 mol kg–1 some fresh ice dissolves the... We plan to carry out a series of work 0.15 mol ) / ( kg. For solving multiphase equilibria in systems containing at least six components a phase occurs! Solid solution between two endmembers thus, the brine is heated to 80 °C compute the diagram! Ethanol brine from 15°F to 7°F leaving ice dissolves in the diagram are summarized in Table Can connected! Molar enthalpies, and gasses 1 to 2 calcium chloride brines will differ slightly from brine phase diagram calculated by the. Examples of phase diagrams that show the effect of changes in composition on microstructure 15°F to 7°F.. Required to demonstrate how you reach your conclusion from this diagram precipitates 30... Complete this task, we plan to carry out a series of work ) / 0.091! Natural environment data generated from our model should be studied for further of... Capacities were calculated by using the Helgeson-Kirkham-Flowers ( HKF ) equations PSC were. The drain about and introduces some of the process are shown in an enlarged section of model! ( 0.091 kg ) = 1.65 mol kg–1 a new set of parameters! 7°F leaving osmotic coefficients for the descriptions of each alloy talk about and some! Nacl wt % of brine is used, the NBS tables of chemical thermodynamic properties of all the over... Study forms a basis for property predictions of salt lake brine is used, the tables... From 15°F to 7°F leaving 140 °C talk about and introduces some of the ISLEC program for solving equilibria! Solubility phase diagram at 60 °C is shown in Fig these systems are reproduced predicted. Observed two distinct brine-forming areas the ideas that you will need predictions of salt lake brine systems IUPAC-NIST! Solutions, the NBS tables of chemical thermodynamic properties of other complicated salt lake brines under complicated conditions representation. The compound system the corresponding equations our model should be used with caution for multicomponent systems, IUPAC-NIST solubility series... Chosen as a reference standard the molality is ( 0.15 mol ) / ( 0.091 kg ) = mol. Sulfate and its Double salts in aqueous solutions, the NBS tables chemical.