Solvent extraction of metal ions from aqueous solutions containing N,N,N′,N′-ethylenediaminetetraacetic and related acids—II. La(III) and diethylenetriaminepentaacetic acid

Polyhedron ◽  
1986 ◽  
Vol 5 (9) ◽  
pp. 1479-1482 ◽  
Author(s):  
Fawzi H. Al-Dabbagh ◽  
Joseph I. Bullock
Keyword(s):  
Solvent Extraction ◽  
Aqueous Solutions ◽  
Metal Ions ◽  
Diethylenetriaminepentaacetic Acid

The method of appearing solvent: Extraction of metal ions from aqueous solutions into in situ forming ionic liquid

2016 ◽  
Vol 469 (2) ◽  
pp. 238-240 ◽  
Author(s):  
S. V. Smirnova ◽  
T. O. Samarina ◽  
D. V. Il’in ◽  
I. V. Pletnev ◽  
Yu. A. Zolotov
Keyword(s):  
Ionic Liquid ◽  
Solvent Extraction ◽  
Aqueous Solutions ◽  
Metal Ions ◽  
In Situ Forming

scholarly journals 2,6-Bis((benzoyl-R)amino)pyridine (R = H, 4-Me, and 4-NMe2) Derivatives for the Removal of Cu(II), Ni(II), Co(II), and Zn(II) Ions from Aqueous Solutions in Classic Solvent Extraction and a Membrane Extraction

Membranes ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 233
Author(s):  
Daria Bożejewicz ◽  
Borys Ośmiałowski ◽  
Małgorzata Anna Kaczorowska ◽  
Katarzyna Witt
Keyword(s):  
Mass Spectrometry ◽  
Solvent Extraction ◽  
Aqueous Solutions ◽  
Metal Ions ◽  
High Resolution Mass Spectrometry ◽  
Membrane Extraction ◽  
Resonance Spectroscopy ◽  
Recovery Processes ◽  
The Stability ◽  
Derivatives Of

In this paper, the application of new substituted 2,6-bis((benzoyl-R)amino)pyridine (R = H, 4-Me, and 4-NMe2) derivatives for the recovery of copper(II), nickel(II), cobalt(II), and zinc(II) ions from aqueous solutions was described. The structures of the synthesized compounds were confirmed by nuclear magnetic resonance spectroscopy (NMR), electrospray ionization high-resolution mass spectrometry (ESI HRMS), and tandem mass spectrometry methods (HCD MS/MS). Three different derivatives of 2,6-bis((benzoyl-R)amino)pyridine were used as carriers in membrane processes and as extractants in classic solvent extraction. In each case, the single derivative recovery was carried out on a model solution that contained only one type of metal ions. Spectrophotometry studies were performed to determine the stability constants of the complexes formed by the synthesized species with analyzed metals ions. The results obtained indicate that the synthesized compounds form stable complexes with Cu(II), Ni(II), Co(II), and Zn(II) ions and can be used in both types of studied recovery processes. However, the effectiveness of the synthesized compounds in the recovery of metal ions depends both on the structure of compounds and properties of metals as well as on their concentration.

scholarly journals The Application of 2,6-Bis(4-Methoxybenzoyl)-Diaminopyridine in Solvent Extraction and Polymer Membrane Separation for the Recovery of Au(III), Ag(I), Pd(II) and Pt(II) Ions from Aqueous Solutions

2021 ◽  
Vol 22 (17) ◽  
pp. 9123
Author(s):  
Daria Bożejewicz ◽  
Katarzyna Witt ◽  
Małgorzata A. Kaczorowska ◽  
Włodzimierz Urbaniak ◽  
Borys Ośmiałowski
Keyword(s):  
Solvent Extraction ◽  
Aqueous Solutions ◽  
Metal Ions ◽  
Noble Metal ◽  
Membrane Separation ◽  
Polymer Membranes ◽  
Silver Ions ◽  
Polymer Membrane ◽  
Separation Processes ◽  
The Stability

The work describes the results of the first application of 2,6-bis(4-methoxybenzoyl)-diaminopyridine (L) for the recovery of noble metal ions (Au(III), Ag(I), Pd(II), Pt(II)) from aqueous solutions using two different separation processes: dynamic (classic solvent extraction) and static (polymer membranes). The stability constants of the complexes formed by the L with noble metal ions were determined using the spectrophotometry method. The results of the performed experiments clearly show that 2,6-bis(4-methoxybenzoyl)-diaminopyridine is an excellent extractant, as the recovery was over 99% for all studied noble metal ions. The efficiency of 2,6-bis(4-methoxybenzoyl)-diaminopyridine as a carrier in polymer membranes after 24 h of sorption was lower; the percentage of metal ions removal from the solutions (%Rs) decreased in following order: Ag(I) (94.89%) > Au(III) (63.46%) > Pt(II) (38.99%) > Pd(II) (23.82%). The results of the desorption processes carried out showed that the highest percentage of recovery was observed for gold and silver ions (over 96%) after 48 h. The results presented in this study indicate the potential practical applicability of 2,6-bis(4-methoxybenzoyl)-diaminopyridine in the solvent extraction and polymer membrane separation of noble metal ions from aqueous solutions (e.g., obtained as a result of WEEE leaching or industrial wastewater).

Sign in / Sign up

Export Citation Format

Share Document