Surfactant Gel Extraction of Gold(III), Palladium(II), Platinum(II), and Lead(II) as Thiourea-complexes

Shoji, Tetsuo; Kimoto, Sakurako; Nozaki, Koji; Murakami, Yoshiko

doi:10.2116/analsci.25.723

Cited by 16 publications

(4 citation statements)

References 12 publications

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“…11 We also confirmed that thiourea -complexes formed ion-pairs with the anionic surfactant, 12 and that the chloro complexes also formed ion-pairs with the cationic surfactant. [13][14][15] The purpose of the present study was to clarify the properties of the ion-pairs and to propose a new separation method for metal ions.…”

Section: Introductionsupporting

confidence: 59%

An X-ray Study of the Surfactant Gel Extraction Method Separation Mechanismand Its Application to Separate Nickel(II) from Copper(II) and as Ammine-Complexes Using the Anionic Surfactant SDS

Murakami

Kajii

Sasaki

et al. 2010

SERDJ

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A micellar solution of sodium dodecylsulfate (SDS) can separate into two phases due to a temperature change or the addition of salts. SDS plays the roles of a pairing-ion for ammine-complexes and of an extraction medium. The ion-pair extraction mechanism was investigated by SAXS and DSC measurements. This extraction was used for the separation of Cu(II) as a minor component from Ni(II) as a dominant component.

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Section: Introductionsupporting

confidence: 59%

An X-ray Study of the Surfactant Gel Extraction Method Separation Mechanismand Its Application to Separate Nickel(II) from Copper(II) and as Ammine-Complexes Using the Anionic Surfactant SDS

Murakami

Kajii

Sasaki

et al. 2010

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“…The head groups of surfactant molecule bind metal ions reversibly through complexation, electron attraction and/or charge neutralization [22]. The higher moieties for heavy metal ions may be due to higher binding constant for them on surfactant molecules in the matrix of inorganic precipitate [28].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of sodium dodecyl sulfate-supported nanocomposite cation exchanger: removal and recovery of Cu2+ from synthetic, pharmaceutical and alloy samples

et al. 2015

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ion exchangers to obtain the material with desirable ion exchange properties, reproducibility and stability [1,2]. In the past few decades, a number of ion exchanger materials have been synthesized. The inorganic ion exchangers are thermally stable, while organic ion exchangers have good mechanical and chemical strength and can be applied for the treatment of large volume of waste effluents. By combining these two different materials having entirely different properties, composite ion exchanger materials are produced with unique properties which are distinct from the constituent's material. In addition to other advantages, composite ion exchangers are more stable at high temperature and radiation fields [3]. The composite ion exchangers exhibit enhanced characteristics by bridging the property gap between two divergent types of materials [4,5]. Thus, the composite ion exchanger materials have been utilized for diverse applications such as quantitative estimations by ion selective electrodes, catalysis, antimicrobial activity, bimolecular separations, chromatography, hydrometallurgy and environmental science [4][5][6][7][8]. However, there are still some major limitations. So, the efforts are continuously going on to improve the mechanical, chemical and thermal stability and their selectivity for heavy metal ions [9][10][11][12]. In this favors, the advanced composite ion exchangers with nanodomain have also been given consideration to summarize the desired properties of both inorganic and organic counter parts into single molecule. These nanocomposite ion exchangers have been developed by adding organic polymer into the matrix of inorganic precipitates by sol-gel method and have been used in environmental applications [4,[9][10][11][12][13]. Water pollution by heavy metals is an important environmental concern which is related negatively with the health and economy. Various kinds of health hazards are arising due to the contamination of heavy metals from the waste effluents of fast growing industries in the surrounding soils as well as ground and Abstract A new surfactant-based nanocomposite cation exchanger, sodium dodecyl sulfate-Th(IV) tungstate (SDS-TT) was prepared by the sol-gel method. The SDS-TT was characterized by FTIR, XRD, TGA, SEM, EDS and TEM. The distribution studies for various metal ions on SDS-TT were performed in different acidic mediums. On the basis of distribution coefficient values, SDS-TT was found to be selective for Cu 2+ metal ion. SDS-TT was successfully used for the quantitative separation of Cu 2+ from the synthetic mixture, pharmaceutical formulation and brass sample. The regeneration studies were performed which showed a decrease in the recovery of Cu 2+ from 88 to 70 % after seven consecutive cycles.

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“…The extraction methods based on temperature-induced phase separation of aqueous ionic micellar solutions may resemble the CPE method using nonionic surfactants [13]. However, we previously reported that an unexpected decrease in extractability was observed at low metal concentrations for the ion-pair extraction of dodecylsulfate anions (DS -) and cationic metal ammine complexes.…”

Section: Solvent Extraction Research and Development Japan Vol 20mentioning

confidence: 99%

Surfactant Gel Extraction of Metal Ammine Complexes using SDS and KCl at Room Temperature, and a Small-angle X-ray Diffraction Study of the Surfactant Phase

Shoji

Ichimaru

Nozaki

et al. 2013

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Surfactant Gel Extraction of Gold(III), Palladium(II), Platinum(II), and Lead(II) as Thiourea-complexes

Cited by 16 publications

References 12 publications

An X-ray Study of the Surfactant Gel Extraction Method Separation Mechanismand Its Application to Separate Nickel(II) from Copper(II) and as Ammine-Complexes Using the Anionic Surfactant SDS

An X-ray Study of the Surfactant Gel Extraction Method Separation Mechanismand Its Application to Separate Nickel(II) from Copper(II) and as Ammine-Complexes Using the Anionic Surfactant SDS

Synthesis of sodium dodecyl sulfate-supported nanocomposite cation exchanger: removal and recovery of Cu2+ from synthetic, pharmaceutical and alloy samples

Surfactant Gel Extraction of Metal Ammine Complexes using SDS and KCl at Room Temperature, and a Small-angle X-ray Diffraction Study of the Surfactant Phase

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