Liquid–liquid extraction: a universal method to synthesize liquid colloidal photonic crystals

2020 ◽  
Vol 8 (3) ◽  
pp. 989-995 ◽  
Author(s):  
Chuan Wang ◽  
Xin Zhang ◽  
Huimin Zhu ◽  
Qianqian Fu ◽  
Jianping Ge
Keyword(s):  
Photonic Crystals ◽  
Extraction Method ◽  
Room Temperature ◽  
Colloidal Particles ◽  
Liquid Extraction ◽  
Universal Method ◽  
Colloidal Photonic Crystals ◽  
Liquid Liquid Extraction

A liquid–liquid extraction method is developed to produce liquid PCs at room temperature. The colloidal particles precipitate to form liquid PCs due to the extraction of solvent and the supersaturation of particles.

scholarly journals Liquid-Liquid Extraction in Systems Containing Butanol and Ionic Liquids – A Review

2017 ◽  
Vol 38 (1) ◽  
pp. 97-110 ◽  
Author(s):  
Artur Kubiczek ◽  
Władysław Kamiński
Keyword(s):  
Ionic Liquids ◽  
Room Temperature ◽  
Liquid Extraction ◽  
Butanol Production ◽  
Model Liquid ◽  
New Class ◽  
Liquid Liquid Extraction ◽  
Liquid Systems ◽  
Nrtl Equation ◽  
Equilibrium Data

AbstractRoom-temperature ionic liquids (RTILs) are a moderately new class of liquid substances that are characterized by a great variety of possible anion-cation combinations giving each of them different properties. For this reason, they have been termed as designer solvents and, as such, they are particularly promising for liquid-liquid extraction, which has been quite intensely studied over the last decade. This paper concentrates on the recent liquid-liquid extraction studies involving ionic liquids, yet focusing strictly on the separation of n-butanol from model aqueous solutions. Such research is undertaken mainly with the intention of facilitating biological butanol production, which is usually carried out through the ABE fermentation process. So far, various sorts of RTILs have been tested for this purpose while mostly ternary liquid-liquid systems have been investigated. The industrial design of liquid-liquid extraction requires prior knowledge of the state of thermodynamic equilibrium and its relation to the process parameters. Such knowledge can be obtained by performing a series of extraction experiments and employing a certain mathematical model to approximate the equilibrium. There are at least a few models available but this paper concentrates primarily on the NRTL equation, which has proven to be one of the most accurate tools for correlating experimental equilibrium data. Thus, all the presented studies have been selected based on the accepted modeling method. The reader is also shown how the NRTL equation can be used to model liquid-liquid systems containing more than three components as it has been the authors’ recent area of expertise.

scholarly journals Homogeneous Liquid-Liquid Extraction Method for Selective Separation and Preconcentration of Trace Amounts of Palladium

2009 ◽  
Vol 6 (4) ◽  
pp. 1077-1084 ◽  
Author(s):  
Mohammad Reza Jamali ◽  
Yaghoub Assadi ◽  
Reyhaneh Rahnama Kozani ◽  
Farzaneh Shemirani
Keyword(s):  
Extraction Method ◽  
Limit Of Detection ◽  
Liquid Extraction ◽  
Selective Separation ◽  
Complexing Agent ◽  
Homogeneous Liquid ◽  
Liquid Liquid Extraction ◽  
Relative Standard ◽  
Separation And Preconcentration ◽  
Ternary Component System

A simple and effective homogeneous liquid-liquid extraction method for selective separation, preconcentration and spectrophotometric determination of palladium(II) ion was developed by using a ternary component system (water / tetrabutylammonium ion (TBA+) / chloroform). The phase separation phenomenon occurred by an ion–pair formation of TBA+and perchlorate ion. Thio-Michler’s ketone (TMK), 4, 4ˊ-bis (dimethylamino) thiobenzophenone, was used as a complexing agent. After optimization of complexation and extraction conditions ([TMK]=5.0x10-2mol L-1, [TBA+] = 2.0×10-2mol L-1, [CHCl3] = 60.0 µL, [ClO4-] = 2.5×10-2mol L-1and pH= 3.0), a preconcentration factor 10 was obtained for 10 mL of sample. The analytical curve was linear in the range of 2-100 ng mL-1and the limit of detection was 0.4 ng mL-1. The relative standard deviation was 3.2% (n=10). Accuracy and application of the method was estimated by using test samples of natural and synthetic water spiked with different amounts of palladium(II) ion. The method is very simple and inexpensive.

Salting-out assisted liquid-liquid extraction method combined with GC-MS for the determination of topiramate in aqueous solutions: development and application of the methodology

2019 ◽  
Vol 55 (13) ◽  
pp. 2303-2312 ◽  
Author(s):  
Janiele Mayara Ferreira De Almeida ◽  
Elania Maria Fernandes Silva ◽  
Lourena Mafra Veríssimo ◽  
Nedja Suely Fernandes
Keyword(s):  
Aqueous Solutions ◽  
Extraction Method ◽  
Liquid Extraction ◽  
Salting Out ◽  
Liquid Liquid Extraction

Optimization of a liquid–liquid extraction method for HPLC–DAD determination of penicillin-V in human plasma

2002 ◽  
Vol 72 (1) ◽  
pp. 85-92 ◽  
Author(s):  
Andrei Medvedovici ◽  
Mihaela Ionescu ◽  
Constantin Mircioiu ◽  
Victor David
Keyword(s):  
Human Plasma ◽  
Extraction Method ◽  
Liquid Extraction ◽  
Penicillin V ◽  
Liquid Liquid Extraction

Determination of Parabens from Water Samples Using Cloud Point Extraction, Vortex Extraction and Liquid–Liquid Extraction Method Coupled with High Performance Liquid Chromatography

2020 ◽  
Vol 17 (2) ◽  
pp. 765-772
Author(s):  
Noorashikin Md Saleh ◽  
N. M. Hafiz ◽  
Nik Nur Atiqah NikWee
Keyword(s):  
Cloud Point ◽  
Water Samples ◽  
Extraction Method ◽  
Optimum Parameter ◽  
Cloud Point Extraction ◽  
Liquid Extraction ◽  
Extraction Time ◽  
Solvent Ratio ◽  
Liquid Liquid Extraction ◽  
Method Of Extraction

A straightforward and efficient way for extraction of parabens that is methylparaben, ethylparaben, propylparaben and benzylparaben in environmental water samples was developed through optimizing parameters for each method of extraction. In this study, methods involved were cloud point extraction, vortex extraction, and liquid–liquid extraction. The parameters affecting the method of extraction were such as salt concentration, surfactant concentration, type of solvent, temperature, ratio of solvent to water and extraction time. The optimum parameter for cloud point extraction method were 1.0 M of salt, 1.0% v/v of surfactant, ratio of surfactant to water is 1:1, extraction time is 1 minute at 30 °C while vortex extraction method, optimum parameter is 1.0 M salt, using acetonitrile as a solvent, ratio 1 solvent: 4 water, and extracted at 1 minute. For the liquid–liquid extraction method, the optimum parameter was at 1.0 M salt, acetonitrile as a solvent, ratio of solvent to water is 1:1 and extraction time at 1 minute. The correlation coefficient for the calibration of paraben at concentration 0.2 ppm–1.0 ppm was in the range from 0.9703 to 0.9942. The limit of detection of studied paraben were 0.1627, 0.0837, 0.1156 and 0.1918 ppm, respectively. Percentage recovery for cloud point extraction, vortex extraction and liquid–liquid extraction were between 41%–147.9%, 26.5%–134.7%, and 31.4%–142.4% respectively. Each sample is repeated with triplication which the value of the relative standard deviation is less than 17.9%. Thus, the most suitable, efficient and effective method in extraction of paraben from water samples is cloud point extraction. The cloud point extraction shows the potential to be explore on the future extraction of others organic pollutants from water samples.

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