Selective cloud point extraction of uranium from thorium and lanthanides using Cyanex 301 as extractant

A Comprehensive Analysis of Selected Anionic Surfactants Behaviour in Aqueous Systems Containing Metal Ions and Inorganic Acid

“…These studies are essential not only for the cognitive effect but also for the application. There are a number of applications for such systems that contain surfactants and metal ions, for example, cloud point extraction [13][14][15], micellar enhanced ultrafiltration [16][17][18], ion exchange [19,20], bitumen emulsion technology [21], leaching [22], continuous countercurrent foam separation [3,11] and flotation in mineral processing [23][24][25], as well as adsorption using surfactant-modified beads [26] and polymersurfactant aggregates [27] or selective precipitation in the presence of surfactants [28]. It should be also noted that the extensive use of both surfactants and metals also contributes to their presence in wastewater.…”

Selective separation of uranyl ions from some lanthanide elements using a promising β-enaminoester ligand by cloud point extraction

“…Different electrolytes have been introduced directly during the extraction process to reach cloud point at room temperature, depending on the salting-out effect. 12 For the enhancement of the extraction efficiency of uranyl ions, different chelating agents, such as 4-(2-pyridylazo)resorcinol, 15 dibenzoylmethane, 16 alizarin red S, 17 bis(2,4,4-trimethylpentyl)dithiophosphate 18 and celestine blue 19 have been used. However, the extraction processes showed low efficiencies, narrow linear ranges, high detection limits, and consumption of large organic solvents.…”

Cloud point extraction associated with differential pulse voltammetry: preconcentration and determination of trace uranyl in natural water

“…H. Liang selectively extracted uranium from thorium and lanthanide using Cyanex 301 as the extraction agent through CPE. 26 C. Mukhopadhyay extracted uranium from spent fuel by CPE and measured it using spectrophotometry. 27 For CPE, analysis is typically performed by high performance liquid chromatography (HPLC), 13,16 UV-vis spectroscopy, 12,17 atomic absorption spectroscopy (AAS), 18,19 or inductively coupled plasma optical emission spectrometry (ICP-OES).…”

“…27 For CPE, analysis is typically performed by high performance liquid chromatography (HPLC), 13,16 UV-vis spectroscopy, 12,17 atomic absorption spectroscopy (AAS), 18,19 or inductively coupled plasma optical emission spectrometry (ICP-OES). 24,26 But these techniques usually require bulky and expensive instrumentation with complex operation, making them unsuitable for rapid and on-site analysis. Electrochemical techniques are attractive for the detection of trace metal ions due to their high sensitivity, low cost, rapid analysis process and suitability for on-site analysis.…”