2013
DOI: 10.1021/ie302124e
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Solubility and Solubility Modeling of Polycyclic Aromatic Hydrocarbons in Subcritical Water

Abstract: A static analytical equilibrium method was used to measure the binary and ternary solubilities of anthracene and p-terphenyl in subcritical water between 393 and 473 K and at 50 and 150 bar. Temperature was found to have the most significant effect on the solubility of polycyclic aromatic hydrocarbons (PAHs) in subcritical water. The effect of pressure, and the combined effect of temperature and pressure on solubility were found to be insignificant, particularly when the range of pressure considered is relativ… Show more

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Cited by 33 publications
(32 citation statements)
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“…The approaches taken ranged from the use of general models to specific correlations aimed at the description of the aqueous solubilities for a specific class of solutes. A portion of the general models have been based on various thermodynamic approaches used before to describe the composition dependence of the activity coefficients in the liquid mixtures such as cubic-plus-association equation of state (Oliveira et al 2009), UNIQUAC, NRTL, Wilson, van Laar and regular solution equations (Alvarez and Saldaña 2011), COSMO-SAC theory (Saldaña et al 2012), regular solution theory-based approach (Fornari et al 2011), corresponding-states theory-based treatment (del Valle et al 2011), Peng-Robinson (PR) equation of state (Teoh et al 2013) or NRTL-PR combination (Escandell et al 2014).…”
Section: Subcritical Water As An Extraction Agent: Pros and Consmentioning
confidence: 99%
See 1 more Smart Citation
“…The approaches taken ranged from the use of general models to specific correlations aimed at the description of the aqueous solubilities for a specific class of solutes. A portion of the general models have been based on various thermodynamic approaches used before to describe the composition dependence of the activity coefficients in the liquid mixtures such as cubic-plus-association equation of state (Oliveira et al 2009), UNIQUAC, NRTL, Wilson, van Laar and regular solution equations (Alvarez and Saldaña 2011), COSMO-SAC theory (Saldaña et al 2012), regular solution theory-based approach (Fornari et al 2011), corresponding-states theory-based treatment (del Valle et al 2011), Peng-Robinson (PR) equation of state (Teoh et al 2013) or NRTL-PR combination (Escandell et al 2014).…”
Section: Subcritical Water As An Extraction Agent: Pros and Consmentioning
confidence: 99%
“…From the viewpoint of application of water as an extraction solvent, it is very important to note that even some organic substances conventionally labeled as stable can undergo chemical alterations in water at considerably milder temperatures than those encountered in supercritical water. For example, even polycyclic aromatic hydrocarbons were repeatedly shown to undergo chemical transformations in contact with near-critical water (Teoh et al 2013;Andersson et al 2003;Yang and Hildebrand 2006). Expectedly, therefore, with the temperature-and/or hydrolysis-sensitive substances relevant to food-related applications, the question of their stability during PHWE becomes still more pressing.…”
Section: Subcritical Water As An Extraction Agent: Pros and Consmentioning
confidence: 99%
“…2 The solubility of many organic molecules bearing polar groups is also observed to increase in SBCW and has also been rationalized, either by the decrease of the dielectric constant or, similarly, by a more broken hydrogen-bond (HB) network 2,3,11,12 . However, the temperature dependence of the solubility of various solutes has been shown to be significantly larger than the temperature dependence of the dielectric constant of water 13 and some solutes (e.g. benzene, 1,8cineole) exhibit a solubility minimum, opposing this picture.…”
Section: Introductionmentioning
confidence: 99%
“…A number of solubility studies have been performed on the SBCW-PAH system [3][4][5][6][7][8][9]. It is important to develop thermodynamic models to predict the solubility of PAHs in SBCW since solubility data for these systems are limited, and therefore reliable thermodynamic models are needed to estimate PAH solubility over wide temperature and pressure ranges for development and design of subcritical water technologies.…”
Section: Introductionmentioning
confidence: 99%
“…Recently, the cubic-plus-association (CPA) equation of state was used to correlate the solubility of PAHs in aqueous systems [3]. Also, Teoh et al [9], used the Peng-Robinson equation of state with the adjustable binary interaction parameter fitted to experimental data, along with the classical mixing rules to correlate the solubility of PAHs in SBCW .Very recently, Escandell et al [15] employed the EoS/G E approach (the Peng-Robinson equation of state [16] and the NRTL excess Gibbs energy model [17]) to model the solubility of aromatic hydrocarbons, including PAHs in carbon dioxide, ethane, and water.…”
Section: Introductionmentioning
confidence: 99%