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

Synergistischer Effekt von Natriumdodecylsulfonatmizellen auf die Kupfer(II)-Extraktion aus sulfathaltigem Medium mit einigen Ortho-hydroxy-Schiff'schen Basen als Extraktionsmittel
  • M. Hadj Youcef , Tayeb Benabdallah and Hasnia Reffas


The present study investigates the synergistic effect of the anionic surfactant sodium dodecyl sulfate micelles (SDS) on the solvent extraction of copper(II) from saline sulfate medium by some ortho-hydroxy Schiff base extracting agents (HL) in chloroform at (25 ± 2)°C. The Schiff base extractants used are N-salicylideneaniline (HSA), N-(2-hydroxy-1-naphthalidene)aniline (HNA) and N-(2-hydroxy-1-naphthalidene)naphthylamine (HNN). In the absence of SDS, the estimated extraction constants of the 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 > HNA > HSA. A synergistic extraction mechanism of copper(II) with ortho-hydroxy Schiff bases in the presence of the surfactant has been proposed.


Diese Studie untersucht den synergistischen Einfluss der Mizellen des anionischen Tensids Natriumdodecylsulfat (SDS) auf die Lösemittelextraktion von Kuper(II) aus Sulfatmedium mittels Ortho-hydroxy-Schiff'sche-Basen (HL) als Extraktionsmittel in Chloroform bei (25 ± 2)°C. Bei den als Extraktionsmittel verwendeten Schiff'schen Basen handelt es sich um N-Salicylidenanilin (HSA), N-(2-Hydroxy-1-naphthaliden)anilin (HNA) und um N-(2-Hydroxy-1-naphthaliden)naphthylamin (HNN). Ohne SDS zeigten die berechneten Extraktionskonstanten der drei Liganden, dass die Extraktionseffizienz in der Reihenfolge HNN < HNA < HAS zunahm. Die Extraktion von Kupfer(II)-ionen wurde deutlich von HL unter Zugabe von SDS erhöht. Es wurde gezeigt, dass SDS nicht in die Koordinationssphäre des Cu(II)-ion eintritt. Die berechneten synergistischen Konstanten fallen in der Folge HNN > HNA > HSA. Ein synergistischer Extraktionsmechanismus von Kupfer(II) mit Ortho-hydroxy-Schiff'schen-Basen in Gegenwart von Tensid wird vorgeschlagen.

*Mr. M. Hadj-Youcef, University of the Sciences and Technology of Oran-Mohamed Boudiaf (U.S.T.O.MB), Laboratory of the Chemistry and Electrochemistry of the Metallic Complexes (LCECM), Department of Chemistry, Faculty of Sciences, BP-1505 El-M'naouer, Oran, Algeria, E-Mail:
Mr. T. Benabdallah, E-Mail:

Mr. M. Hadj Youcef was born in 1973; he has received her bachelor's degree in chemistry engineering in 1996 and her master's degree in organometallic and separation chemistry in 2004 from the University of Sciences and Technology Oran. He has published about 9 publications. He is currently a lecturer at the Faculty of Sciences, University of Sciences and Technology Oran, Algeria. His focus is the separation of organometallic species from surfactants solutions.

Prof. T. Benabdallah was born in 1957, he has received his bachelor's degree in organic chemistry in 1982 and his master's degree in organic chemistry in 1987 from the University of AIX-Marseille II under the supervision of Professor R. Guglielmetti. He was awarded his PhD in 1993 in organic chemistry from the University of Sciences and Technology Oran. He has supervised more than 8 MSc and PhD students and published about 20 publications. He is currently a professor at the Faculty of Sciences, University of Sciences and Technology Oran, Algeria.

Mrs. H. Reffas was born in 1974; she has received her bachelor's degree in chemical engineering in 1997 and her master's degree in organometallic chemistry in 2004 from the University of Sciences and Technology Oran. She has published about 6 publications. She is currently a lecturer at the Faculty of Sciences, University of Sciences and Technology Oran, Algeria.


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Received: 2013-09-14
Revised: 2013-12-30
Published Online: 2013-05-01
Published in Print: 2014-03-17

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