Temperature and salt addition effects on the solubility behaviour of some phenolic compounds in water

Noubigh, Adel; Abderrabba, Manef; Provost, Élise

doi:10.1016/j.jct.2006.06.014

Cited by 111 publications

(102 citation statements)

References 16 publications

(23 reference statements)

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“…Indeed, the studied salts can be considered as strong electrolytes completely dissociable permitting the formation of some more or less solvated ions. This solvation leads to a decrease in amount of water available for solvation of phenolic compounds, which in turn resulted in decreased concentration of this compound in the aqueous phase [29,30]. If we can assume that an electrolyte is insoluble in 1-octanol, the salt effect on the K ow may arise from the interactions between ions, phenolic compound, and water.…”

Section: Salt Addition Effect On the Partition Coefficient (Mcl M = mentioning

confidence: 99%

Salt addition effect on partition coefficient of some phenolic compounds constituents of olive mill wastewater in 1-octanol-water system at 298.15 K

Noubigh¹,

Abderrabba²,

Provost

2009

JICS

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The 1-octanol-water partition coefficient is an important property to measure the hydrophobicity of organic compounds, which has been demonstrated to be a parameter in studying the conformation of biomolecules in aqueous solutions. For biological systems, electrolytes play an important role in thermodynamic properties. The salt addition effect on the distribution of phenolic compounds between water and 1-octanol at 298.15 K has been studied. The phenolic compounds used were vanillic acid, protocatechuic acid, vanillin, tyrosol, cathecol, caffeic acid and syringic acid, and the considered salts were potassium chloride, sodium chloride and lithium chloride. The influence of both the concentration and size of the added salt on the partition coefficient (K ow ) have been considered. This study shows a salting in with the following decreasing order: LiCl > NaCl > KCl. The Gibbs energies of transfer of phenolic compounds ( o tr G ' ) form chloride solutions to organic phase have been calculated using experimental 1-octanol-water partition coefficients.

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Section: Salt Addition Effect On the Partition Coefficient (Mcl M = mentioning

confidence: 99%

Salt addition effect on partition coefficient of some phenolic compounds constituents of olive mill wastewater in 1-octanol-water system at 298.15 K

Noubigh¹,

Abderrabba²,

Provost

2009

JICS

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“…The solubility is expressed in mole fraction by means of Eq. 2 (Noubigh et al 2008(Noubigh et al , 2007Freire et al 2005). …”

Section: Resultsmentioning

confidence: 99%

“…1). The fitting permits the evaluation of the salting out constant K s for a specific couple solute/ salt (Poulson et al 1999;Ni and Yalkowsky 2003;Görgényi et al 2006;Noubigh et al 2008Noubigh et al , 2007Nemzer and Dickson 2005). The different values of K s as function of temperature are listed in Table 4.…”

Section: Discussionmentioning

confidence: 99%

“…The diluted status of the aqueous phase made possible the application the ideal behavior in order to get to the molar thermodynamic of transfer (Noubigh et al 2007;Freire et al 2005). Therefore, assuming that the activity coefficient of water in aqueous phase as well as organic compound in the organic phase are equal to 1, thermodynamic functions of transfer are calculated.…”

Section: Thermodynamic Functions Of Transfermentioning

confidence: 99%

“…Salting out effect offers several possibilities in the study of the physical behavior of solution, improvement of analytical technique of separation in addition to well injection and recovery methodology. Also, the aqueous solubility of organic compounds and their tendency to sorb to particles are inversely related, it is predicted that an increase in ionic strength is accompanied by an increase in partitioning into sediment (Turner 2003;Turner and Rawling 2001;Noubigh et al 2008;Noubigh et al 2007;Bullister et al 2002).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Mass Transfer of Carbaryl from Pure Water to Salt Aqueous Solution: Result Comparison Between Sea and Lab-Made Water

Saab

Naccoul

Stephan

et al. 2009

Water Air Soil Pollut

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It is well known that mass transfer of a solid compound into a liquid phase is characterized by mutual properties of both sides. Solubilization capacity of the liquid phase is primary affected by its composition in inorganic species inducing salting in/ out effect evaluated by Setschenow constant, generally defined at 298.15 K. On the other hand, the equilibrium process is highly influenced by polar compatibility issue. Therefore, the study of such transfer is essential in order to set the role of each party participating in the solid-liquid equilibrium. Thus, a comparison of transfer magnitude and feasibility of carbaryl from pure water, to seawater, and lab-made seawater was held. To do so, solubility of the compound was experimented at different temperature in multiple media. Solubility determination is based on the saturation of a specific heated fluid passing through a saturation cell. The solute transported is subsequently trapped in a specific extraction column. Back flashing method is then applied to dissolve the compound. After validation, aqueous solubility of carbaryl was studied as function of temperature ranging from (273.15 to 318.15 K) at atmospheric pressure. In addition, solubility was determined in pure, seawater, and corresponding labmade water, thus solubility values ranged from 3.57E-06 to 3.49E-05 in pure water, from 3.04E-06 to 2.53E-05 in seawater and from 6.51E-06 to 3.61E-05 in lab-made water. As a result, thermophysical properties of transfer and usage of lab-made water on the mass transfer properties divergence was spotted. The Salting out phenomenon observed for carbaryl was interpreted by the internal pressure theory that suggests the reduction of internal cavities in the presence of salt, making solubilization process more difficult to achieve. Thus, showing an overall endogenic process with a positive Gibbs free energy of transfer that is highly affected by the magnitude of Water Air Soil Pollut (

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Pressurized hot water extraction of polyphenols from plant material

Vergara‐Salinas

Cuevas‐Valenzuela

2015

Biotechnology of Bioactive Compounds

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Temperature and salt addition effects on the solubility behaviour of some phenolic compounds in water

Cited by 111 publications

References 16 publications

Salt addition effect on partition coefficient of some phenolic compounds constituents of olive mill wastewater in 1-octanol-water system at 298.15 K

Salt addition effect on partition coefficient of some phenolic compounds constituents of olive mill wastewater in 1-octanol-water system at 298.15 K

Mass Transfer of Carbaryl from Pure Water to Salt Aqueous Solution: Result Comparison Between Sea and Lab-Made Water

Pressurized hot water extraction of polyphenols from plant material

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