Electro-assisted solvent extraction of Cu2+, Ni2+ and Cd2+

Izaskun Bustero; Yufei Cheng; Juan Carlos Mugica; Toribio Fernández-Otero; A. Fernando Silva; David J. Schiffrin

doi:10.1016/S0013-4686(98)00149-2

Electro-assisted solvent extraction of Cu²⁺, Ni²⁺ and Cd²⁺

Izaskun Bustero, Yufei Cheng, Juan Carlos Mugica, Toribio Fernández-Otero, A. Fernando Silva, David J. Schiffrin^*

^*Corresponding author for this work

TECNALIA Research & Innovation

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

24 Citations (Scopus)

Abstract

A novel separation method, i.e. electro-assisted solvent extraction, based on the principles of two-phase electrochemistry, has been demonstrated for the successful separation of Ni²⁺, Cu²⁺ and Cd²⁺ ions. 2-Heptanone has been used as the organic solvent for the transfer of Ni²⁺, Cu²⁺ and Cd²⁺ facilitated by 2,2′;6′,2″-terpyridine. It is shown that extraction efficiency depends on the concentration ratio of ligand to metal ion and importantly, on the applied interfacial potential difference. It was found that Ni²⁺ (not Cd²⁺ or Cu²⁺) extraction is suppressed in the presence of Mg²⁺ ion due to competitive complexation.

Original language	English
Pages (from-to)	29-38
Number of pages	10
Journal	Electrochimica Acta
Volume	44
Issue number	1
DOIs	https://doi.org/10.1016/S0013-4686(98)00149-2
Publication status	Published - 1 Sept 1998

Keywords

Immiscible electrolytes
Ion transfer
Liquid-liquid interfaces
Solvent extraction
Two-phase electrochemistry

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10.1016/S0013-4686(98)00149-2

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title = "Electro-assisted solvent extraction of Cu2+, Ni2+ and Cd2+",

abstract = "A novel separation method, i.e. electro-assisted solvent extraction, based on the principles of two-phase electrochemistry, has been demonstrated for the successful separation of Ni2+, Cu2+ and Cd2+ ions. 2-Heptanone has been used as the organic solvent for the transfer of Ni2+, Cu2+ and Cd2+ facilitated by 2,2′;6′,2″-terpyridine. It is shown that extraction efficiency depends on the concentration ratio of ligand to metal ion and importantly, on the applied interfacial potential difference. It was found that Ni2+ (not Cd2+ or Cu2+) extraction is suppressed in the presence of Mg2+ ion due to competitive complexation.",

keywords = "Immiscible electrolytes, Ion transfer, Liquid-liquid interfaces, Solvent extraction, Two-phase electrochemistry",

author = "Izaskun Bustero and Yufei Cheng and Mugica, \{Juan Carlos\} and Toribio Fern{\'a}ndez-Otero and Silva, \{A. Fernando\} and Schiffrin, \{David J.\}",

year = "1998",

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doi = "10.1016/S0013-4686(98)00149-2",

language = "English",

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TY - JOUR

T1 - Electro-assisted solvent extraction of Cu2+, Ni2+ and Cd2+

AU - Bustero, Izaskun

AU - Cheng, Yufei

AU - Mugica, Juan Carlos

AU - Fernández-Otero, Toribio

AU - Silva, A. Fernando

AU - Schiffrin, David J.

PY - 1998/9/1

Y1 - 1998/9/1

N2 - A novel separation method, i.e. electro-assisted solvent extraction, based on the principles of two-phase electrochemistry, has been demonstrated for the successful separation of Ni2+, Cu2+ and Cd2+ ions. 2-Heptanone has been used as the organic solvent for the transfer of Ni2+, Cu2+ and Cd2+ facilitated by 2,2′;6′,2″-terpyridine. It is shown that extraction efficiency depends on the concentration ratio of ligand to metal ion and importantly, on the applied interfacial potential difference. It was found that Ni2+ (not Cd2+ or Cu2+) extraction is suppressed in the presence of Mg2+ ion due to competitive complexation.

AB - A novel separation method, i.e. electro-assisted solvent extraction, based on the principles of two-phase electrochemistry, has been demonstrated for the successful separation of Ni2+, Cu2+ and Cd2+ ions. 2-Heptanone has been used as the organic solvent for the transfer of Ni2+, Cu2+ and Cd2+ facilitated by 2,2′;6′,2″-terpyridine. It is shown that extraction efficiency depends on the concentration ratio of ligand to metal ion and importantly, on the applied interfacial potential difference. It was found that Ni2+ (not Cd2+ or Cu2+) extraction is suppressed in the presence of Mg2+ ion due to competitive complexation.

KW - Immiscible electrolytes

KW - Ion transfer

KW - Liquid-liquid interfaces

KW - Solvent extraction

KW - Two-phase electrochemistry

UR - https://www.scopus.com/pages/publications/0032306482

U2 - 10.1016/S0013-4686(98)00149-2

DO - 10.1016/S0013-4686(98)00149-2

M3 - Article

AN - SCOPUS:0032306482

SN - 0013-4686

VL - 44

SP - 29

EP - 38

JO - Electrochimica Acta

JF - Electrochimica Acta

IS - 1

ER -

Electro-assisted solvent extraction of Cu²⁺, Ni²⁺ and Cd²⁺

Abstract

Keywords

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