Thermodynamic study of aqueous two phase systems for some aliphatic alcohols+sodium thiosulfate+water

Nemati-Knade, Ebrahim; Shekaari, Hemayat; Jafari, Safar A.

doi:10.1016/j.fluid.2012.02.015

Cited by 38 publications

(20 citation statements)

References 28 publications

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“…The complete set of parameters of COSMO‐RS‐ES was determined based on a large set of mean ionic coefficient (1465 data points) and LLE data (1071 data points) that was collected from various references . An overview on the data set is presented in Tables S1 and S2 in the Supporting Information.…”

Section: Computational Detailsmentioning

confidence: 99%

Development of a COSMO‐RS based model for the calculation of phase equilibria in electrolyte systems

2017

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A new electrolyte model, which is based on the predictive thermodynamic model COSMO-RS, is presented. For this purpose, an implementation of COSMO-RS that allows the integration of multiple segment descriptors was developed. To aid in the development of the electrolyte model, a new technique is presented that allows the evaluation of the different contributions of the interaction terms of COSMO-RS to the partial molar enthalpies. General empirical interaction energy equations are introduced into the electrolyte model. They are parameterized based on a large training set of mean ionic activity coefficients as well as liquid-liquid equilibrium data close to ambient conditions. The model is shown to be capable of predicting properties of systems containing anions that were not part of the training set of the model. Furthermore, it is demonstrated that the model can also lead to satisfying predictions if compared to vaporliquid equilibrium data.

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Section: Computational Detailsmentioning

confidence: 99%

Development of a COSMO‐RS based model for the calculation of phase equilibria in electrolyte systems

2017

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“…The solubility of 1‐propanol as a function of salt concentration for the four salts tested, and for the published salts CsCl, KF, Na 2 SO 3 , disodium hydrogen citrate(Na 2 C 6 H 6 O 7 ), MgSO 4 , dipotassium Oxalate(C 2 K 2 O 4 ), Na 2 S 2 O 3 , ZnSO 4 , LiCl, NaBr, NaCl, KCl, MnSO 4 were analyzed by fitting Eqn (3) to obtain k s values . The results were shown in Table .…”

Section: Resultsmentioning

confidence: 99%

Salts and 1‐propanol induced aqueous two‐phase systems: phase separation and application

Xie

2019

J of Chemical Tech & Biotech

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BACKGROUND: Today there is a resurgence of interest in using short-chain hydrophilic alcohols and salts to recover stronger polar bio-based chemicals and fuels for use as platform chemicals and renewable alternative transportation fuels. How to reduce the extractant depletion during the recovery of other bio-based chemicals from the fermentation broths is a problem of concern to researchers. RESULTS:The present work investigated a 1-propanol salt aqueous two-phase system and its application to recover bio-based acetoin. The water + 1-propanol + K 4 P 2 O 7 system was preferred for recovering bio-based acetoin according to the recovery of 1-propanol in the 1-propanol salt aqueous two-phase ternary system and after extraction of acetoin, and the salt content in the organic phase so as to avoid the losses of salt and 1-propanol.CONCLUSION: Subsequently, almost 100% of acetoin can be recovered from the aqueous solution; almost all of the salt was retained in the aqueous phase and more than 99% of 1-propanol was recovered.

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“…The binodal data of ternary systems were obtained via the cloud point method, which has been widely reported in the previous literatures [33]. A glass of ether solution with known mass fraction was placed in a water thermostat (EYEL4 NCB-1200, TOKYO RIKAKIKAI CO. LTD. Japan) with an accuracy of ± 0.1 K. The salt solution of a known concentration at the same temperature was titrated into the glass vessel drop by drop until the solution appeared turbid.…”

Section: Apparatus and Proceduresmentioning

confidence: 99%

Effects of temperature and pH on phase behavior for the ternary systems of water + inorganic salt + alkoxyethanols at atmospheric pressure

Wang

et al. 2016

Journal of Molecular Liquids

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The effects of temperature, pH, inorganic salts, as well as molecular structure on the phase behavior of water + salt + alkoxyethanol(CnEm, n = 2-4, m = 1-3) ternary systems were investigated. Binodal data for water + NaCl + C2E1, C3E1, C4E1, C4E2, C4E3 were obtained and correlated to investigate how the system's phase-split ability is influenced by the type of alkoxyethanol. In addition, the binodal data for aqueous solution of C4E1 with NaCl, KCl, CsCl, NaF, NaBr were investigated to understand the effects of the salts. Furthermore, the complete two-liquid-phase coexistence regions for water + NaCl + C4E1 at T = (283.15, 293.15, 303.15, 313.15) K were acquired to investigate the effects of temperature. The liquid-liquid equilibria (LLE) were also studied based on tie-line data, in which three correlation equations, the Othmer-Tobias equation, the Bancroft equation and the Setschenow equation were used. Finally, the binodal data of water + NaCl + C4E1 was measured at pH = (3, 5, 7, 9, 11) to investigate the impact of pH.

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Thermodynamic study of aqueous two phase systems for some aliphatic alcohols+sodium thiosulfate+water

Cited by 38 publications

References 28 publications

Development of a COSMO‐RS based model for the calculation of phase equilibria in electrolyte systems

Development of a COSMO‐RS based model for the calculation of phase equilibria in electrolyte systems

Salts and 1‐propanol induced aqueous two‐phase systems: phase separation and application

Effects of temperature and pH on phase behavior for the ternary systems of water + inorganic salt + alkoxyethanols at atmospheric pressure

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