Solubility of some phenolic compounds in aqueous alkali metal nitrate solutions from (293.15 to 318.15) K

Noubigh, Adel; Cherif, Mourad; Provost, Élise; Abderrabba, Manef

doi:10.1016/j.jct.2008.06.006

Cited by 25 publications

(34 citation statements)

References 15 publications

(20 reference statements)

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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%

“…Consequently, the Gibbs free energy of transfer is the differential free energy between real and simulated solution expressed in Eq. 4 (Noubigh et al 2008(Noubigh et al , 2007Freire et al 2005;Heidman et al 1985).…”

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%

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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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“…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%

Section: Discussionmentioning

confidence: 99%

Section: Thermodynamic Functions Of Transfermentioning

confidence: 99%

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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“…brown seed phenols) on amylase activity which results in lower amylase activity and subsequent lower mobilization of storage sugar. It has been suggested that solubility of different phenols in a medium is varied due to the presence of salts such as potassium, sodium nitrate and chloride (Noubigh et al 2008). Furthermore, it was observed that in black seeds, amylase activity was rapid and stable throughout the germination period particularly in saline medium.…”

Section: Discussionmentioning

confidence: 99%

The role of enzyme amylase in two germinating seed morphs of Halopyrum mucronatum (L.) Stapf. in saline and non-saline environment

Siddiqui

Khan

2010

Acta Physiol Plant

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The role of enzyme amylase in two germinating seed morphs, i.e. black and brown, of Halopyrum mucronatum in saline and non-saline environment was examined. Both seed morphs of this halophytic grass have variations in their moisture content, total lipid, protein, sugar, phenol and tannin contents. Black seed exhibited higher activity compared to brown in saline medium. Sugar mobilization in both seed morphs was also affected due to the difference in amylase activity. However, exogenous application of GA 3 in saline medium enhanced the amylase activity and sugar mobilization. Phenolic contents were similar except for vanillic acid which was found only in brown seeds while catechol was present only in black seeds. Phenols extracted from both seed morphs were applied to determine their effects on amylase activity. Phenolic extracts obtained from brown seeds showed higher degree of inhibition of amylase activity. Results are discussed in relation to seed coat phenols, leaching, amylase activity and sugar mobilization.

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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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Solubility of some phenolic compounds in aqueous alkali metal nitrate solutions from (293.15 to 318.15) K

Cited by 25 publications

References 15 publications

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

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

The role of enzyme amylase in two germinating seed morphs of Halopyrum mucronatum (L.) Stapf. in saline and non-saline environment

Pressurized hot water extraction of polyphenols from plant material

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