Performance improving with temperature in liquid–liquid extraction using cumene–isobutyric acid–water chemical system

Saien, Javad; Daliri, Shabnam

doi:10.1016/j.jiec.2013.04.002

Cited by 9 publications

(10 citation statements)

References 20 publications

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“…For example Saien and Daliri [46] who have used a cumene-isobutyric acid-water and Saien et al [47] who have used (4-methylpentan-2-one)-acetic acid-water have found that the distribution coefficients increased as temperature increased by 3.02%/°C and 1.84%/°C respectively, which are comparable to the results obtained in this study. Table 4 3.…”

Section: Distribution Coefficientssupporting

confidence: 88%

Removal of estrone (E1), 17β-estradiol (E2), and 17α-ethinylestradiol (EE2) from wastewater by liquid–liquid extraction

Fredj

Nobbs

Tizaoui

et al. 2015

Chemical Engineering Journal

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With the recent wide spread concerns of the environmental and public health effects of endocrine disrupting chemicals (EDCs), it is becoming important to develop new techniques to remove these substances from wastewater. EDCs find their way to the environment mainly via effluents from WWTPs. They are often cited as moderately hydrophobic, hence they have tendency to distribute to organic solvents and can then be removed using liquid-liquid extraction (LLE) techniques. However, despite being a mature chemical engineering unit operation, LLE has not been studied for the removal of EDCs in water. This study investigated the removal of three EDCs of concerns including estrone (E1), 17β-estradiol (E2), and 17α-ethinylestradiol (EE2) using decamethylcyclopentasiloxane (D5) as an extraction solvent in three water matrix types (Milli-Q, tap water, and a secondary treated wastewater). The study showed that all three EDCs were distributed to D5 but at varying distribution coefficients: K E1 = 2.66, K E2 = 0.61 and K EE2 = 1.67 ±5% at pH 6 and 20 o C. Due to the high pKa values of the three EDCs, pH had no significant effect on K EDCs up to about pH 9.5 but higher pHs reduced the distribution ratios up to almost zero at pH 12. Van't Hoff Equation described the effect of temperature on K EDCs and showed that the process was endothermic. The overall estrogenic potency of the three EDCs in mixtures was quantified with an E2 equivalent potency, which was found to distribute well into the solvent at a K E2EQ 2 = 1.43. The study suggests that LLE is an effective method to remove estrogenic potency of wastewater.

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Section: Distribution Coefficientssupporting

confidence: 88%

Removal of estrone (E1), 17β-estradiol (E2), and 17α-ethinylestradiol (EE2) from wastewater by liquid–liquid extraction

Fredj

Nobbs

Tizaoui

et al. 2015

Chemical Engineering Journal

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“…The most relevant parameter for this enhancement is the molecular diffusivity, which depends directly on the absolute temperature of the liquid medium and inversely on the viscosity of the solvent. 18 In addition, the solubility of phenol in water increased with increasing temperature, which decreased the mass-transfer resistance in the dispersed phase. As a result, the transfer coefficient increased.…”

Section: Methodsmentioning

confidence: 99%

Measurement and Correlation of the Mass-Transfer Coefficient for the Methyl Isobutyl Ketone–Water–Phenol System

Sun

Zhao

Chen

et al. 2014

Ind. Eng. Chem. Res.

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To determine the mass-transfer behavior in the extraction of phenol from water with methyl isobutyl ketone, single-droplet experiments were performed to measure mass-transfer coefficients under various conditions. For this purpose, the droplet diameter, the initial concentration of phenol in the aqueous phase, the temperature, and the pH of the aqueous phase were investigated. For the aim of modeling, the molecular diffusivity was multiplied by an empirical factor (R). Then, the molecular diffusivity (D d) was replaced by the enhanced molecular diffusivity (RD d) in the Kronig–Brink equation. Finally, the modified correlation of the mass-transfer coefficient model was found to fit well all of the experimental data under all experimental conditions.

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“…A few investigations of the effect of temperature on the performance of an extraction column have been conducted. Such studies have shown that increasing the temperature from 15 to 40 °C can significantly increase the mass transfer performance of extraction columns [124,125]. In another study, Saien and Zardoshti [126] investigated the influence of temperature on mean drop size in a single drop extraction column in the presence of Fe 3 O 4 nanoparticles.…”

Section: Contactors With Mechanical Agitationmentioning

confidence: 99%

A critical review on the use of nanoparticles in liquid–liquid extraction

Amani

Ahmadi

et al. 2018

Chemical Engineering Science

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Recently, the use of nanoparticles in extraction columns has gained increasing attention due to their potential to enhance mass transfer processes. Most of the reported work, however, has been concerned with mass transfer enhancement in gas-liquid systems in the presence of nanoparticles, while limited studies of liquid-liquid systems have been reported. Liquidliquid extraction is an extensively employed separation method that has taken on a substantial role in engineering and industrial applications for recovery processes. Therefore, the aim of this review article is to provide an overview of the state-of-the-art from the available literature on the effect of nanoparticles on the hydrodynamic behavior and mass transfer performance of liquid-liquid systems. Attention is also given to providing an understanding of the mechanisms responsible for the improvements in mass transfer with the use of nanoparticles. In the majority of studies, the presence of nanoparticles was found to be beneficial and to lead to improved mass transfer, although a few investigations reported a detrimental impact of nanoparticles. The literature does not clearly describe the conditions under which the addition of nanoparticles would be unfavorable. Moreover, the addition of nanoparticles always introduces potential drawbacks, such as sedimentation, accumulation, or clogging inside extraction columns, as well as the need to separate the nanoparticles at the outlets. These drawbacks have not been considered in the literature, limiting the practical employment of nanoparticles in this industry.

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Performance improving with temperature in liquid–liquid extraction using cumene–isobutyric acid–water chemical system

Cited by 9 publications

References 20 publications

Removal of estrone (E1), 17β-estradiol (E2), and 17α-ethinylestradiol (EE2) from wastewater by liquid–liquid extraction

Removal of estrone (E1), 17β-estradiol (E2), and 17α-ethinylestradiol (EE2) from wastewater by liquid–liquid extraction

Measurement and Correlation of the Mass-Transfer Coefficient for the Methyl Isobutyl Ketone–Water–Phenol System

A critical review on the use of nanoparticles in liquid–liquid extraction

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