Lead(II) removal from aqueous solutions by solvent extraction with tetracarboxylresorcin[4]arene

• Autorzy: Konczyk J. , Kozlowski C. , Walkowiak W.
• Języki publikacji: EN

Abstrakty

EN

A novel tetracarboxylresorcin[4]arene was synthesized and its selective complexing ability towards Pb(II) ions was examined. The influence of several parameters such as pH of aqueous phase, agitation time, extractant and modifier concentrations on solvent extraction of Pb(II) ions from the aque-ous nitrate phase into chloroform organic phase was studied. The stoichiometry of the formed metal-ligand complexes was established by slope analysis. Pb(II) ions were quantitatively extracted in the form of 2:1 Pb(II)-resorcin[4]arene complex from aqueous solutions of pH 5.5 to the solution of ligand in chloroform. Competitive solvent extraction experiments in the presence of Zn(II) and Cd(II) ions were also carried out and high selectivity of the extractant towards Pb(II) over Zn(II) and Cd(II) was found. The selectivity order was: Pb(II) >> Cd(II) > Zn(II).

Słowa kluczowe

EN

solvent extraction; lead(II); zinc(II); cadmium(II); resorcinarene

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Physicochemical Problems of Mineral Processing
• Rocznik: 2013
• Tom: Vol. 49, iss. 1
• Strony: 213--222
• Opis fizyczny: Bibliogr. 22 poz., rys., tab.

Twórcy

autor

Konczyk J.

• Institute of Chemistry and Environment Protection, Jan Dlugosz University of Czestochowa, 42-201 Czestochowa, Armii Krajowej 13/15, Poland

autor

Kozlowski C.

• Institute of Chemistry and Environment Protection, Jan Dlugosz University of Czestochowa, 42-201 Czestochowa, Armii Krajowej 13/15, Poland

autor

Walkowiak W.

• Chemical Metallurgy Division, Faculty of Chemistry, Wroclaw University of Technology, 50-370 Wroclaw, Wybrzeze Wyspianskiego 27, Poland

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