Uptake properties of palladium for biopolymer microcapsules enclosing Cyanex 302 extractant

Hitoshi Mimura; Hiroshi Ohta; Harutaka Hoshi; Kenichi Akiba; Yoshio Onodera

doi:10.1081/SS-100000849

Uptake properties of palladium for biopolymer microcapsules enclosing Cyanex 302 extractant

Hitoshi Mimura, Hiroshi Ohta, Harutaka Hoshi, Kenichi Akiba, Yoshio Onodera

ENG - Quantum Science and Energy Engineering

Research output: Contribution to journal › Article › peer-review

23 Citations (Scopus)

Abstract

An extractant having a strong affinity for palladium, bis(2,4,4-trimethylpentyl) monothiophosphinic acid (Cyanex 302), was enclosed into microcapsules by mixing with a biopolymer, calcium alginate gel polymer. The uptake of Pd²⁺ and other metal ions in the microcapsules was investigated; a relatively large distribution coefficient of Pd²⁺, K_{d, Pd}, of above 10³ cm³/g was obtained around 0.1 M HNO₃, and there was a large difference in K_d value between Pd²⁺ and other metal ions. The uptake of Pd²⁺ on microcapsules followed a Langmuir-type uptake isotherm. The microcapsules were packed into a column and then a separation of Pd²⁺ was performed.

Original language	English
Pages (from-to)	31-44
Number of pages	14
Journal	Separation Science and Technology
Volume	36
Issue number	1
DOIs	https://doi.org/10.1081/SS-100000849
Publication status	Published - 2001 Feb 13

Keywords

Alginate gel
Biopolymer
Cyanex 302
Microcapsule
Palladium
Separation factor
Uptake

ASJC Scopus subject areas

Chemistry(all)
Chemical Engineering(all)
Process Chemistry and Technology
Filtration and Separation

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10.1081/SS-100000849

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abstract = "An extractant having a strong affinity for palladium, bis(2,4,4-trimethylpentyl) monothiophosphinic acid (Cyanex 302), was enclosed into microcapsules by mixing with a biopolymer, calcium alginate gel polymer. The uptake of Pd2+ and other metal ions in the microcapsules was investigated; a relatively large distribution coefficient of Pd2+, Kd, Pd, of above 103 cm3/g was obtained around 0.1 M HNO3, and there was a large difference in Kd value between Pd2+ and other metal ions. The uptake of Pd2+ on microcapsules followed a Langmuir-type uptake isotherm. The microcapsules were packed into a column and then a separation of Pd2+ was performed.",

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author = "Hitoshi Mimura and Hiroshi Ohta and Harutaka Hoshi and Kenichi Akiba and Yoshio Onodera",

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AU - Mimura, Hitoshi

AU - Ohta, Hiroshi

AU - Hoshi, Harutaka

AU - Akiba, Kenichi

AU - Onodera, Yoshio

PY - 2001/2/13

Y1 - 2001/2/13

N2 - An extractant having a strong affinity for palladium, bis(2,4,4-trimethylpentyl) monothiophosphinic acid (Cyanex 302), was enclosed into microcapsules by mixing with a biopolymer, calcium alginate gel polymer. The uptake of Pd2+ and other metal ions in the microcapsules was investigated; a relatively large distribution coefficient of Pd2+, Kd, Pd, of above 103 cm3/g was obtained around 0.1 M HNO3, and there was a large difference in Kd value between Pd2+ and other metal ions. The uptake of Pd2+ on microcapsules followed a Langmuir-type uptake isotherm. The microcapsules were packed into a column and then a separation of Pd2+ was performed.

AB - An extractant having a strong affinity for palladium, bis(2,4,4-trimethylpentyl) monothiophosphinic acid (Cyanex 302), was enclosed into microcapsules by mixing with a biopolymer, calcium alginate gel polymer. The uptake of Pd2+ and other metal ions in the microcapsules was investigated; a relatively large distribution coefficient of Pd2+, Kd, Pd, of above 103 cm3/g was obtained around 0.1 M HNO3, and there was a large difference in Kd value between Pd2+ and other metal ions. The uptake of Pd2+ on microcapsules followed a Langmuir-type uptake isotherm. The microcapsules were packed into a column and then a separation of Pd2+ was performed.

KW - Alginate gel

KW - Biopolymer

KW - Cyanex 302

KW - Microcapsule

KW - Palladium

KW - Separation factor

KW - Uptake

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Uptake properties of palladium for biopolymer microcapsules enclosing Cyanex 302 extractant

Abstract

Keywords

ASJC Scopus subject areas

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