Evaluation of novel imino-phenol ligands in divalent metal ion extraction/recovery processes from leaching solutions

Werlinger, Francisca; Rojas, René S.

doi:10.1016/j.seppur.2020.117451

Cited by 4 publications

(1 citation statement)

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“…NH 4 OH) solutions depending on the properties of the extractant and the extracted metal ions (Wojciechowska et al, 2017;Das et al, 2021;Bożejewicz et al, 2019). Extraction processes performed with utilization of different pyridine derivatives were described in the literature for many metal ions, including noble and radioactive metals (Werlinger and Rojas, 2020;Dubenskiy et al, 2020;Wang et al, 2021;Steczek et al, 2019). The process of liquid-liquid extraction is relatively easy and cheap, but its serious limitation is the need to use large amounts of chemicals, i.e.…”

Section: Introductionmentioning

confidence: 99%

Chemical and Process Engineering

2022

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In this article, we present the results of the first application of 2-benzoylpyridine (2-BP) as a carrier in adsorptive polymeric materials dedicated for the removal of Ag(I) and Cu(II) ions from model acidic solutions. In the first stage of the research, the classical solvent extraction, in which 2-BP was used as an extractant, allowed to determine the proper conditions for conducting adsorptive processes. The stability constants of 2-BP complexes with analyzed metal ions were determined using the spectrophotometric method. The electrospray ionization (ESI) high-resolution mass spectrometry (HRMS) method was applied for the confirmation of the ability of 2-BP molecules to form complexes with Cu 2+ metal ions in a solution and to determine the elemental composition of generated complexes (to identify the ratio of the number of metal ions to the number of molecules of 2-BP). The obtained results indicate that both the adsorptive processes and solvent extraction strongly depend on the properties of metal ions and that the use of 2-BP as a carrier/extractant allows for efficient removal of silver(I) ions and much less effective removal of copper(II) ions. The utilization of adsorptive polymeric materials is in line with the contemporary research trends that focus on eco-friendly and cost-effective methods.

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