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Innovative approaches in cloud-point extraction

Journal of Chromatography A, 2023
Cloud-point extraction (CPE) is a pre-treatment technique for the extraction and preconcentration of different chemical compounds, such as metal ions, pesticides, drugs, phenols, vitamins etc., from various samples. CPE is based on the phenomenon of two phases (micellar and aqueous) forming after the heating of an aqueous isotropic solution of a non ...
Radoslav Halko   +2 more
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Cloud Point Extraction of Direct Yellow

Environmental Science & Technology, 2005
The cloud point separation of Direct Yellow from micellar solution of various nonionic surfactants, containing a polyoxyethylene chain, was studied. The separation of dyes is an important environmental problem. Moreover, such separation can also be considered as a preliminary step for further studies of biochemical recovery. Some dyes can be considered
Elzbieta, Tatara   +4 more
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Extractive microbial fermentation in cloud point system

Enzyme and Microbial Technology, 2010
Extractive microbial fermentation of organic compounds in liquid-liquid two-phase systems is a potential strategy to overcome the limitations of microbial fermentation in an aqueous solution, such as low substrate solubility, substrate/product inhibition and product further degradation.
Zhilong, Wang, Zewen, Dai
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Cloud point extraction of microalgae cultures

Separation and Purification Technology, 2013
Abstract The micellar in situ extraction of hydrophobic compounds from microalgae cultures ( Chlamydomonas reinhardtii , Chlorella vulgaris , Scenedesmus obliquus ) using nonionic surfactants (Triton X-114, Tergitol TMN 6, Tergitol 15-s-7) was studied in lab- and pilot scale. Therefore, phase separation behavior of the cloud point systems as well
Philipp Glembin   +2 more
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An improved approach for flow-based cloud point extraction

Analytica Chimica Acta, 2014
Novel strategies are proposed to circumvent the main drawbacks of flow-based cloud point extraction (CPE). The surfactant-rich phase (SRP) was directly retained into the optical path of the spectrophotometric cell, thus avoiding its dilution previously to the measurement and yielding higher sensitivity.
Rejane M, Frizzarin, Fábio R P, Rocha
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Cloud Point Extraction

2017
Phase separation of a surfactant-loaded solution happens beyond a certain critical thermodynamic state (known as the cloud point), separating the hydrophobic-rich phase in a nonpolar microenvironment from the aqueous supernatant. The dye molecules are bounded to the surfactant and subsequently separated by changing the environmental factor (temperature
Sourav Mondal   +2 more
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