Removal of Tannic Acid From Aqueous Solution by Cloud Point Extraction and Investigation of Surfactant Regeneration by Microemulsion Extraction

Ghouas, Halima; Haddou, Boumediene; Kameche, Mostèfa; Canselier, Jean-Paul; Gourdon, Christophe

doi:10.1007/s11743-015-1764-9

Cited by 35 publications

(8 citation statements)

References 66 publications

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“…CPE follows the principles of ‘green chemistry' because it uses small amounts of non-toxic organic surfactants compared to toxic organic solvents [ 7 ]. CPE manipulates the temperature and concentration of surfactant to move the analyte into a micelle phase for separation.…”

Section: Introductionmentioning

confidence: 99%

Determination of carcinogenic herbicides in milk samples using green non-ionic silicone surfactant of cloud point extraction and spectrophotometry

et al. 2018

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A new cloud point methodology was successfully used for the extraction of carcinogenic pesticides in milk samples as a prior step to their determination by spectrophotometry. In this work, non-ionic silicone surfactant, also known as 3-(3-hydroxypropyl-heptatrimethylxyloxane), was chosen as a green extraction solvent because of its structure and properties. The effect of different parameters, such as the type of surfactant, concentration and volume of surfactant, pH, salt, temperature, incubation time and water content on the cloud point extraction of carcinogenic pesticides such as atrazine and propazine, was studied in detail and a set of optimum conditions was established. A good correlation coefficient (R2) in the range of 0.991–0.997 for all calibration curves was obtained. The limit of detection was 1.06 µg l−1 (atrazine) and 1.22 µg l−1 (propazine), and the limit of quantitation was 3.54 µg l−1 (atrazine) and 4.07 µg l−1 (propazine). Satisfactory recoveries in the range of 81–108% were determined in milk samples at 5 and 1000 µg l−1, respectively, with low relative standard deviation, n = 3 of 0.301–7.45% in milk matrices. The proposed method is very convenient, rapid, cost-effective and environmentally friendly for food analysis.

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Section: Introductionmentioning

confidence: 99%

Determination of carcinogenic herbicides in milk samples using green non-ionic silicone surfactant of cloud point extraction and spectrophotometry

et al. 2018

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“…The ionic form is more soluble in water than the neutral form. Hence, as in our previous works [34,35,37,38], the solute was stripped from micellar phase by a pH shift above pK a of MePB and PrPB. The aim of this work is to move towards \green", i. e. nonpolluting, energy-saving chemical processes.…”

Section: Stripping Of Solutes From the Micellar Phasementioning

confidence: 93%

Easy Removal of Methylparaben and Propylparaben from Aqueous Solution Using Nonionic Micellar System

Habbal

Haddou

Canselier

et al. 2019

Tenside Surfactants Detergents

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This study aimed to investigate the simultaneous removal of methylparaben (MePB) and propylparaben (PrPB) from effluents (each one at 16 mg/L) using a nonionic micellar system containing Triton X-114. Response surface methodology (RSM) has been carried out. Extraction results using nonionic surfactant two-phase system were considered as a function of surfactant concentration and temperature variation. Four responses were investigated: MePB and PrPB extraction yield (E), solute (X s,w) and surfactant (X sf,w) concentrations in the aqueous phase and the volume fraction of micellar phase (u C) at equilibrium. Very high extraction efficiencies (99 % for PrPB and 84 % for MePB) were achieved at optimal conditions. Thereby, the amounts of PrPB and MePB were reduced 80 and 5 times, respectively. The extraction improvement using sodium sulfate was also shown. Finally, the solute stripping from micellar phase by pH change was proved.

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“…This latter avoids the use of an organic solvent, produces small sludge volume and requires low energy consumption. This process is very efficient for treating water containing various contaminants including dissolved or dispersed organic matter [21][22][23][24][25][26][27][28][29][30][31][32][33][34][35][36][37][38][39][40]. This method of water purification was also applied to the extraction of metal ions using diverse appropriate chelates [15,[41][42][43][44] and without chelates [45][46][47][48][49].…”

Section: Introductionmentioning

confidence: 99%

Phenol and benzenoid alcohols separation from aqueous stream using cloud point extraction: Scaling-up of the process in a mixer-settler

Benkhedja

Canselier

Gourdon

et al. 2017

Journal of Water Process Engineering

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A B S T R A C TIn the present work, the cloud point extraction (CPE) of three organic pollutants (phenol,benzyl alcohol and 1phenylethanol) with aqueous solutions of biodegradable alkoxylated nonionic surfactants (TERGITOL 15-S-7 and SIMULSOL NW342), is investigated. First, the partial phase diagrams of the water-surfactant binary systems are established. Then, the effects of organic pollutants and sodium chloride on the cloud point (T c ) are determined. Extraction efficiency is evaluated by the following responses: percentage of solute extracted, E (%), residual concentrations of solute and surfactant in dilute phase (X s,w , and X t,w , respectively) and volume fraction of coacervate at equilibrium (ϕ c ). Three-dimensional empirical correlations are used for fitting the experimental results. The comparison between experimental and calculated values allows model parameter identification. Based on these data, CPE was implemented in a continuous mixer-settler device. The feasibility of a multi-stage crossflow process for the purification of samples containing phenol using SIMULSOL NW342 was tested. Six stages were required to reduce the pollutant concentration below the allowed level (0.3 ppm), which proves the efficiency of CPE in the treatment of wastewaters.

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Removal of Tannic Acid From Aqueous Solution by Cloud Point Extraction and Investigation of Surfactant Regeneration by Microemulsion Extraction

Cited by 35 publications

References 66 publications

Determination of carcinogenic herbicides in milk samples using green non-ionic silicone surfactant of cloud point extraction and spectrophotometry

Determination of carcinogenic herbicides in milk samples using green non-ionic silicone surfactant of cloud point extraction and spectrophotometry

Easy Removal of Methylparaben and Propylparaben from Aqueous Solution Using Nonionic Micellar System

Phenol and benzenoid alcohols separation from aqueous stream using cloud point extraction: Scaling-up of the process in a mixer-settler

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