Thermodynamics of non-ionic surfactant Triton X-100-cationic surfactants mixtures at the cloud point

2011 ◽  
Author(s):  
Çiğdem Batıgöç ◽  
Halide Akbaş ◽  
Mesut Boz
Keyword(s):  
Cloud Point ◽  
Cationic Surfactants ◽  
Ionic Surfactant ◽  
Triton X

scholarly journals Improvement of a 'SSQuEE' Method for Recovery and Preconcentration of Pesticides from Environmental Samples

2021 ◽  
Vol 33 (10) ◽  
pp. 2472-2476
Author(s):  
Rajib Joarder
Keyword(s):  
Cloud Point ◽  
High Performance ◽  
Limit Of Detection ◽  
Ionic Surfactant ◽  
Analytical Technique ◽  
Liquid Chromatography Separation ◽  
Cloud Point Temperature ◽  
Triton X ◽  
Optimum Extraction

A simple, sensitive, quick, easy and efficient (SSQuEE) analytical technique based on cloud point extraction (CPE) has been developed for the determination of different pesticides present in soil and water with high performance liquid chromatography separation and ultraviolet detection. The environmentally friendliness surfactant like Triton X -100, compared to Tween series of non-ionic surfactant can effectively extract imidacloprid (insecticide), flusilazole (fungicide) and atrazine (herbicide) at cloud point temperature at 67 ºC, 82 ºC and 62 ºC, respectively. To reach the optimum extraction efficiency, different experimental parameters like surfactant concentration, salt type and its concentration, equilibrium time and temperature, pH were observed. At the optimum conditions, linear regression coefficient of the standard curves was greater than 0.9924. The limit of detection of imidacloprid, flusilazole and atrazine were 0.10 μg L-1, 0.24 μg L-1, 0.15 μg L-1 and recovery percent are 99.71 %, 88.1% and 89.74%, respectively.

scholarly journals Cloud Point Extraction Of Cationic Surfactants And Their Ionic Associates With Sodium Dodecyl Sulfate

2020 ◽  
Vol 15 (3) ◽  
pp. 111-116
Author(s):  
S.O. Lelyushok ◽  
V.O. Doroschuk ◽  
S. A. Kulichenko
Keyword(s):  
Cloud Point ◽  
Cationic Surfactant ◽  
Anionic Surfactant ◽  
Cationic Surfactants ◽  
Cloud Point Extraction ◽  
Sodium Dodecyl ◽  
Ionic Surfactant ◽  
Rich Phase ◽  
Ionic Associates ◽  
Extraction Degree

The distribution of individual cationic surfactants and their ionic associates with the anionic surfactant in the cloud point extraction systems, based on non-ionic surfactant OP-7 was investigated. Determined that the dependence of the extraction degree of halides alkylpyridiniums on carboxylic change length in optimal conditions for extraction is characterized by the existence of maximum for cationic surfactant where n = 12. Decrease as well as increase in carboxylic change length of cation of alkylpyridiniums diminishes the effectiveness of their extraction into the surfactant-rich phase. The peculiarities of inter phase distribution of ionic associates cationic surfactant – anionic surfactant in the micellar extraction systems are investigated. It was shown, that with the increase in carboxylic change length of cationic surfactant the dependence of extraction degree of associates with anionic surfactant is characterized by the existence of the maximum. Most effective into the surfactant-rich phase extracted of ionic associates of three- and tetradecylpyridinium. Decreasing and increasing of hydrophobicity of alkylpyridiniums diminishes the effectiveness of extraction of associates. The established effects are explained by the hydrophobic correspondence between the substrate and the surfactant-rich phase of non-ionic surfactant.

A cloud point extraction procedure for gallium, indium and thallium determination in liquid crystal display and sediment samples

2015 ◽  
Vol 7 (5) ◽  
pp. 2114-2120 ◽  
Author(s):  
Wael I. Mortada ◽  
Ibrahim M. Kenawy ◽  
Mohamed M. Hassanien
Keyword(s):  
Liquid Crystal ◽  
Cloud Point ◽  
Cloud Point Extraction ◽  
Liquid Crystal Display ◽  
Extraction Procedure ◽  
Ionic Surfactant ◽  
Sediment Samples ◽  
Separation And Preconcentration ◽  
Thallium Determination ◽  
Triton X

A simple, sensitive and rapid cloud point extraction (CPE) methodology has been developed for the selective separation and preconcentration of gallium, indium and thallium, after complexation with gallic acid in the presence of Triton X-114 as a non-ionic surfactant.

scholarly journals Cloud Point Extraction of Toxic Reactive Black 5 Dye from Water Samples Using Triton X-100 as Nonionic Surfactant

2011 ◽  
Vol 8 (4) ◽  
pp. 1606-1613 ◽  
Author(s):  
Raziyeh Mousavi ◽  
Farzin Nekouei
Keyword(s):  
Cloud Point ◽  
Salt Concentration ◽  
Water Samples ◽  
Cloud Point Extraction ◽  
Extraction Procedure ◽  
Ionic Surfactant ◽  
Reactive Black 5 ◽  
Optimum Conditions ◽  
Single Extraction ◽  
Triton X

A surfactant mediated cloud point extraction (CPE) procedure has been developed to remove color from wastewater containing reactive black 5, using triton x-100 (TX-100) as non-ionic surfactant. The effects of the concentration of the surfactant, pH, temperature and salt concentration on the different concentrations of dye have been studied and optimum conditions were obtained for the removal of reactive black 5 (RB 5). The concentration of RB 5 in the dilute phase was measured using UV-Vis spectrophotometer. It was found that the separation of phases was complete and the recovery of RB 5 was very effective in the presence of NaCl as an electrolyte. The results showed that up to 600 mg L-1of RB 5 can quantitatively be removed (>97%) by cloud point extraction procedure in a single extraction using optimum conditions.

scholarly journals Cloud Point Extraction and Spectrophotometric Studies for the Extraction of Nigrosin and Aniline Blue Dyes using Mixed Micelles of TBAB and Triton X-114

2021 ◽  
Vol 33 (6) ◽  
pp. 1351-1356
Author(s):  
D. Radhakrishna ◽  
D. Suneetha ◽  
P. Shyamala
Keyword(s):  
Cloud Point ◽  
Mixed Micelles ◽  
Extraction Efficiency ◽  
Cloud Point Extraction ◽  
Sea Water ◽  
Limit Of Detection ◽  
Tetrabutylammonium Bromide ◽  
Aniline Blue ◽  
Ionic Surfactant ◽  
Triton X

The extractions of two anionic dyes viz. nigrosin and aniline blue by cloud point extraction method using mixed micelles of tetrabutylammonium bromide (TBAB) and Triton X-114 were conducted. To get the greatest extraction efficiency, pH of the solution, surfactant concentration, concentration of electrolyte, equilibrium temperature and time were optimized. A linear calibration curve in the range of 0.567-9.07 mg/L (nigrosin) and 0.982-19.645 mg/L (aniline blue) was obtained. Limit of detection were found to be 2.45 ng/L and 2.008 ng/L for nigrosin and aniline blue dyes, respectively. Thermodynamic parameters were also calculated to establish the feasibility of the process. This method was then used to determine the dyes in tap and sea water samples. The extraction efficiency was explained in terms of dye surfactant interaction as shown by observed spectral changes between anionic dye and cationic surfactant followed by solubilization of the complex in non-ionic surfactant.

Cloud Point Extraction of Direct Blue 71 Dye using Triton X-100 as Nonionic Surfactant

2021 ◽  
Vol 58 (1) ◽  
pp. 27-32
Author(s):  
Moussa Alibrahim
Keyword(s):  
Cloud Point ◽  
Salt Concentration ◽  
Dye Removal ◽  
Cloud Point Extraction ◽  
Blue Dye ◽  
Ionic Surfactant ◽  
Optimal Conditions ◽  
Direct Blue ◽  
Triton X ◽  
Direct Blue 71

Abstract A surfactant-mediated cloud point extraction (CPE) method using the non-ionic surfactant Triton X-100 (TX-100) has been developed to remove the dye Direct Blue 71 (DB71) from a waste water. Most of the dye molecules are solubilized in the coacervate phase so that the dilute phase remains free of the dye. The effects of surfactant concentration, temperature and salt concentration on the different dye concentrations were studied to determine the optimal conditions for removing DB71. The concentration of DB71 in the dilute phase was measured using UV-Vis spectrophotometer. It was found that the separation of phases was complete and the recovery of DB71 was very effective in the presence of NaCl as an electrolyte. The results showed that up to 25 ppm DB71, i.e. more than 95%, can be quantitatively removed by cloud point extraction procedures in a single extraction at optimal conditions. It was also observed that at a dye concentration of 1 ppm, 100% of the blue dye DB71 can be directly removed with a TX-100 concentration of 12% by weight. At higher dye concentrations of up to 30 ppm, 94.7%-100% dye can be removed. The TX-100 concentration was 12 wt%, the salt concentration (NaCl) 0.005 M and the temperature 75°C. It is concluded that the surfactant mediated cloud point extraction method for dye removal can be an alternative to current dye removal methods.

scholarly journals Cloud-Point Extraction of Rhodamine 6G by Using Triton X-100 as the Non-Ionic Surfactant

2011 ◽  
Vol 94 (1) ◽  
pp. 286-292 ◽  
Author(s):  
Celal Duran ◽  
Duygu Ozdes ◽  
Volkan Numan Bulut ◽  
Mehmet Tufekcī ◽  
Mustafa Soylak
Keyword(s):  
Cloud Point ◽  
Rhodamine 6G ◽  
Cloud Point Extraction ◽  
Equilibrium Temperature ◽  
Isotherm Models ◽  
Ionic Surfactant ◽  
Water And Wastewater ◽  
Dye Extraction ◽  
Triton X ◽  
Significant Interference

Abstract Cloud-point extraction (CPE) using the non-ionic surfactant Triton X-100 was used successfully to remove a highly toxic dye, rhodamine 6G (R6G), from water and wastewater. The effects of different analytical parameters such as pH, concentration of Triton X-100 (TX-100) and salts, equilibrium temperature, and incubation time on the efficiency of the extraction of R6G were studied in detail, and optimum conditions for dye extraction were obtained. Thermodynamic parameters including changes in Gibbs free energy, enthalpy, and entropy were also calculated, and these parameters indicated that the CPE of R6G was feasible, spontaneous, and endothermic in the temperature range of 75–95°C. The equilibrium solubilization capacity of TX-100 was found to be 1.10 mmol/mol by using Langmuir isotherm models. No significant interference effects were observed in the presence of phenol and its derivatives, some acidic and basic dyes and most of the anions and cations. It was concluded that the CPE process described in this paper can be an alternative technique for removal of dyes and other pollutants from waters and wastewaters.

scholarly journals Cloud Point Extraction for Pre-Concentration and Spectrophotometric Determination of Trace Amounts of Silver Ions

2020 ◽  
Vol 10 (03) ◽  
pp. 459-464
Author(s):  
Azhar A. Ghali
Keyword(s):  
Detection Limit ◽  
Cloud Point ◽  
Spectrophotometric Determination ◽  
Cloud Point Extraction ◽  
Incubation Temperature ◽  
Chelating Agent ◽  
Silver Ions ◽  
Ionic Surfactant ◽  
Triton X

During the last years, the cloud point extraction was applied for determination, separation, and enrichment of the elements. The current study used cloud point extraction (CPE) for the extraction of Ag(I) ions pre-concentration from watery solutions by a non-ionic surfactant (Triton X-114) and chelating agent a 6-(4-bromo-phenylazo)m-anisidine[6-(4-BrPAA)], then estimation by using the spectrophotometry at 514 nm. Several condition effects on the efficiency of the cloud-point extraction included Triton X-114 concentration, [6-(4-BrPAA)] concentration, pH, time, and incubation temperature. The silver reacts with [6-(4-BrPAA)] to produce complex at a ratio of one to one. 0.009 to 1.5 μg mL-1 is the range of linearity. The detection limit and quantification of Ag(I) ion were 0.0054 and 0.0182 μg mL-1, respectively. The interference of the cations was examined. The cloud-point extraction was used for the evaluation of silver concentration in the water specimen.

Selective Ligandless Cloud Point Extraction of Palladium from Water and Dust Samples

2015 ◽  
Vol 98 (1) ◽  
pp. 201-205 ◽  
Author(s):  
Sayed Zia Mohammadi ◽  
Mohsen Mohammadnezhad
Keyword(s):  
Cloud Point ◽  
High Efficiency ◽  
Cloud Point Extraction ◽  
Absorption Spectrometry ◽  
Ionic Surfactant ◽  
Solution Ph ◽  
Flame Atomic Absorption ◽  
Separation And Preconcentration ◽  
Triton X

Abstract In this study, the phase-separation phenomenon ofnon-ionic surfactants was used for separation and preconcentration of Pd(II). The cloud point extraction(CPE) method is based on the formation of PdI2 which is then entrapped in the non-ionic surfactant Triton X-114. Ethanol acidified with 0.5 M HNO3 was added to the surfactant-rich phase prior to its analysis by flame atomic absorption spectrometry. The main factors affecting CPE efficiency, such as sample solution pH, concentration of iodide ion and Triton X-114, equilibration temperature and time, were all investigated and optimized. At optimum conditions, a calibration curve was constructed for the determination of palladium according to the ligandless CPE procedure. Linearity was maintained between 1.0 to 500.0 ng/mL. The LOD based on three times the SD of the blank divided by the slope of analytical curve, (3Sb/m) was 0.3 ng/mL. Seven replicatedeterminations of a solution containing of 4.0 μg palladium gave a mean absorbance of 0.359 with RSD ±1.85%. The high efficiency of CPE to carry out the determination of palladium in complex matrixes was demonstrated. The proposed method has beenapplied to the determination of trace amounts of palladium in a platinum-iridium alloy, water, and dust samples, with satisfactory results.

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