Liquid-liquid equilibria and COSMO-SAC modeling of organic solvent/ionic liquid - hydroxyacetone - water mixtures

Bharti, Anand Kumar; Verma, Rupesh; Prerna,; Namdeo, Sarvesh; Malviya, Abhigyan; Banerjee, Tamal; Sandler, Stanley I.

doi:10.1016/j.fluid.2018.01.026

Cited by 19 publications

(15 citation statements)

References 41 publications

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“…It may be noted that the DES compound containing a HBD and HBA is not available within the Aspen plus database. In this case, the Cosmo-Sac model [12,13] within the Aspen module has been invoked. Initially, the sigma profiles of both HBD and HBA were obtained and then added to get a sigma profile of complete DES.…”

Section: Aspen Plus Flowsheetmentioning

confidence: 99%

“…Initially, the sigma profiles of both HBD and HBA were obtained and then added to get a sigma profile of complete DES. The methodology, equations and theory behind Cosmo-based models are available elsewhere and in our previous work [12,13]. Here, we study only DES, as the incorporation of nanoparticles within Aspen is beyond the scope of the current work.…”

Section: Aspen Plus Flowsheetmentioning

confidence: 99%

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Evaluation and conceptual design of triphenylphosphonium bromide-based deep eutectic solvent as novel thermal nanofluid for concentrated solar power

2019

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In a concentrated solar power (CSP) plant, an increase of heat transfer effect of the working fluid is a key deliverable which is usually obtained by enhancing its thermo-physical properties. The current work reports the synthesis of heat transfer fluids (HTF) based on deep eutectic solvents (DESs) consisting of a hydrogen bond donor (HBD), namely, triphenylphosphonium bromide, and a hydrogen bond acceptor (HBA), namely, ethylene glycol. Initially, the thermophysical properties, namely, density, viscosity, thermal conductivity (TC) and specific heat capacity were measured and compared with the conventional solvents. The properties were further enhanced by the dispersion of spherical Al 2 O 3 nanoparticles in DESs. The alumina nanoparticles were found to have a negligible effect on the physical properties (density and viscosity) of the base fluid, thereby limiting the pressure drop and also the coefficient of friction. For their potential application as thermal fluids for CSP plants, the thermal properties of DESs and nanoparticle dispersed deep eutectic solvents (NDDESs) were measured within a temperature range of 25-60 • C. The TC of 1 wt% Al 2 O 3 with the base fluid was around eight times higher than the base DES. It was found that the TCs of DES and NDDES were higher when compared to the commercial HTF, namely, Therminol VP-1. Eventually, the Aspen plus flowsheet was conceptualized to ascertain the steam generation rate and the overall heat transfer coefficient of these novel solvents. A combination of U-shaped for latent heat and shell and tube heat for sensible heat was employed in the flowsheet. The CSP scheme gave a steam generation rate of 1.7 kg h −1 at 180 • C with a corresponding DES flow rate of 1 m 3 h −1 .

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Section: Aspen Plus Flowsheetmentioning

confidence: 99%

Section: Aspen Plus Flowsheetmentioning

confidence: 99%

Evaluation and conceptual design of triphenylphosphonium bromide-based deep eutectic solvent as novel thermal nanofluid for concentrated solar power

2019

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“…The main types of ATPSs include polymer + salt + water, polymer + polymer + water and ionic liquid + organic solvent + water . We have investigated the liquid–liquid equilibria, thermodynamic theories and applications of ATPSs.…”

Section: Introductionmentioning

confidence: 99%

“…The main types of ATPSs include polymer + salt + water, 27 polymer + polymer + water 28 and ionic liquid + organic solvent + water. 29 We have investigated the liquid-liquid equilibria, 30,31 thermodynamic theories 32 and applications [33][34][35] of ATPSs. It has been found that polyoxyethylene cetyl ether (POELE20) is an appropriate choice to form a polymer-salt ATPS because it consists of a hydrophobic alkyl domain and hydrophilic polyoxyethylene tail.…”

Section: Introductionmentioning

confidence: 99%

Simultaneous separation, concentration and determination of trace fluoroquinolone antibiotics in environmental samples using a polymer aqueous two‐phase system coupled with HPLC

Sun

Zhu

et al. 2019

J of Chemical Tech & Biotech

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BACKGROUND Fluoroquinolone antibiotics and their metabolites can accumulate in soil and water. Trace amounts of fluoroquinolone antibiotic residues in the environment necessitate the pretreatment of samples prior to analysis. In this work, a polyoxyethylene cetyl ether (POELE20)–NaH2PO4 aqueous two‐phase system (ATPS) was combined with high‐performance liquid chromatography (HPLC) to separate and determine trace quantities of ciprofloxacin (CIP), norfloxacin (NRF) and pefloxacin (PEF) in environmental samples. RESULTS Single‐factor, multi‐factor, reproducibility and accuracy experiments were performed. The extraction efficiencies and enrichment factors for the three antibiotics were above 90 and 13.8%, respectively, under optimal conditions. The recovery efficiency of CIP was 92.08–99.50%, with a relative standard deviation (RSD) of 0.60–6.34%, and the recovery efficiency of NRF and PEF was 93.40–99.30%, with RSD of 0.98–5.16%, when this method was applied to spiked water and soil samples. The RSDs of intra‐ and inter‐day analyses were 1.56–3.42 and 1.33–3.97%, respectively. CONCLUSIONS This study demonstrated that POELE20–NaH2PO4 ATPS coupled with HPLC was suitable for the simultaneous separation, concentration and determination of trace quantities of CIP, NRF and PEF in environmental samples. Moreover, this method can be applied for the determination of trace fluoroquinolone antibiotics in food samples. © 2019 Society of Chemical Industry

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“…If the number of experimental studies on phase equilibria involving systems with water, oil and IL is really scarce in the literature, their modelling is even less studied. Systems where only a biphasic region is found have been modelled using activity coefficient models [13][14][15] or COSMO-SAC. 14,15 Domanska et al 13 proposed the use of N-octylisoquinolinium bis(tri-uoromethylsulfonyl)imide to recover 2-phenylethanol from aqueous solutions produced in its bio-synthesis.…”

Section: Introductionmentioning

confidence: 99%

Equilibria and correlation of systems involving 1-hexyl-3-methylpyridinium trifluoromethanesulfonate

et al. 2019

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Liquid-liquid equilibria and COSMO-SAC modeling of organic solvent/ionic liquid - hydroxyacetone - water mixtures

Cited by 19 publications

References 41 publications

Evaluation and conceptual design of triphenylphosphonium bromide-based deep eutectic solvent as novel thermal nanofluid for concentrated solar power

Evaluation and conceptual design of triphenylphosphonium bromide-based deep eutectic solvent as novel thermal nanofluid for concentrated solar power

Simultaneous separation, concentration and determination of trace fluoroquinolone antibiotics in environmental samples using a polymer aqueous two‐phase system coupled with HPLC

Equilibria and correlation of systems involving 1-hexyl-3-methylpyridinium trifluoromethanesulfonate

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