Synergistic Effect of Sodium Dodecyl Sulfate Micelles on Copper(II) Extraction from Saline Sulfate Medium with Some Ortho-Hydroxy-Schiff Base Chelating Extractants

Abstract

The present study investigates the synergistic effect of the anionic surfactant sodium dodecyl sulfate micelles (SDS)o nt he solvent extraction of copper(II)f rom saline sulfate medium by some ortho-hydroxyS chiff base extracting agents (HL) in chloroform at (25 ±2) 8 C. The Schiff base extractants used are Nsalicylideneaniline (HSA), N-(2-hydroxy-1-naphthalidene)aniline (HNA) and N-(2-hydroxy-1-naphthalidene)naphthylamine (HNN). In the absence of SDS, the estimated extraction constantso ft he three ligands revealed that the extraction efficiency increased in the order HNN<HNA<HSA. The extraction of Cu(II)was remarkably enhanced with HL upon the addition of the SDS surfactant. It was found that SDS did not intervene in the coordination sphere of the Cu(II). The calculated synergistic constant fell in the order HNN >H NA >H SA.Asynergistic extraction mechanism of copper(II)with ortho-hydroxy Schiff bases in the presence of the surfactant has been proposed.

Synthesis and Characterization of a Novel Series of Amphiphilic Mercapto‐1,2,4‐Triazole Schiff Base Ligands: Investigation of their Behavior in Hydro‐Organic Solutions

“…A bibliographic survey reveals different types of organic ligands have such as phosphoric acids, ahydroxy oximes, b-diketones and amines have been utilized for the extraction of many metal cations [68][69][70][71]. Schiff bases have also been found to be an attractive candidate for extraction of base metal ions [30,31,72,73].…”

“…Although, a considerable amount of work has been mainly focused on the synthesis and the investigation of surfactant properties of Schiff base amphiphiles, no information is available about their acidic and distribution properties and extracting behaviors. Therefore, in continuation of our previous studies on the behaviors of Schiff bases in biphasic systems [30][31][32], we explore here the solution behavior, such as acidity, distribution and extraction power of four new amphiphilic Schiff bases bearing different hydrocarbon chain tails and salicylidene-3-mercapto-1,2,4-triazol headgroup (Fig. 1).…”

Design Equilibrium Parameters for Recovery of Chromium(III) from Concentrated Saline Sulfate Media via Room-Temperature Cloud-Point Extraction Process Using a Mixture of Multidentate Schiff Base Ligand/Tergitol 15-S-7 as a Novel Biodegradable Extracting System

“…In this context, and following our previous studies on the extracting properties of chelating Schiff base ligands toward heavy metals in the micellar phase, − we investigate in this paper the ability of N , N ′-bis­(salicylideneaminoethyl)­amine Schiff base ligand (H 2 Saldien) for the cloud point extraction of chromium­(III) ion from concentrated saline sulfate medium in the presence of nonionic surfactant, Tergitol 15-S-7 (Figure ). In fact, interest in this class of ligands has grown recently due to their structural rigidity, stability, and complexing ability for various metal cations. , Furthermore, Schiff bases are well-known as organic ligands that can be readily synthesized from inexpensive starting materials, and their properties are well established in the field of coordination chemistry.…”