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SELECTIVE SEPARATION OF METALS BY A NEW SORBENT, THE POLYETHYLENIMINE METHYLENEPHOSPHONIC ACID (PEIMPA)


OMAR ABDERRAHIM 1, MOHAMED AMINE DIDI 1 *ANDBERNARD MOREAU 2, DIDIER VILLEMIN 2
(1)LABORATORY OF CATALYSIS AND SYNTHESIS IN ORGANIC CHEMISTRY, CHEMISTRY DEPARTMENT, TLEMCEN UNIVERSITY, BP 119, TLEMCEN, ALGERIA (2)ENSI CAEN, UNIVERSITY OF CAEN, LCMT, UMR CNRS 6507, F-14050, CAEN, FRANCE *CORRESPONDING AUTHOR: MADIDI13@YAHOO.FR, TEL: (

Issue:

SCSCC6, Volume VIII, No. 2

Section:

Volume VIII, No. 2 (2007)

Abstract:

A new sorbent, the polyethylenimine methylenephosphonic acid (PEIMPA), was synthesized from commercially available polyethylenimine. After characterization by (1H, 13C, 31P) NMR, elementary analysis, UV/VIS and FTIR, the new ion exchange polymer PEIMPA has been investigated in liquid – solid extraction of a mixture of Cd(II), Co(II), Cu(II), Fe(III), Ni(II), Pb(II) and Zn(II) cations from a mineral residue of zinc ore dissolved in nitric acid. The selectivity of this polymer was studied as a function of pH. PEIMPA can sorb much higher amounts of Fe ion than Cd, Co, Cu, Ni, Pb and Zn ions. The recovery of Fe(III) is almost quantitative. Because of this remarkable affinity, the PEIMPA resin has potential for application in several fields. Further studies of the polymer are in progress.

Keywords:

phosphonic sorbent, heavy metal ions, liquid-solid extraction, selectivity, polyethylenimine methylenephosphonic acid.

Code [ID]:

CSCC6200708V02S01A0004 [0001955]

DOI:

Full paper:

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