Poly[acrylamide-co-1-(2-hydroxyethyl)aziridine]: An efficient water-soluble polymer for selective separation of metal ions

Abstract

aziridine], obtained by spontaneous copolymerization, which contains different types of ligand groups as tertiary amines and hydroxyl and amide groups, was tested as a polychelatogen using the liquid-phase polymer-based retention (LPR) technique. The metal ion retention ability of this polymer was found to depend on the pH and it showed a high selectivity to copper(II) at pH 5. The maximum capacity of Cu(II) was determined at pH 5 by using the enrichment variant of LPR. The retention capacities of the polymer with Cu(II), Cd(II), Co(II), Cr(III), Ni(II), Pb(II), Zn(II), and Fe(II) were studied at different pH and the results are compared with those of branched polyethylenimine and poly[1-(2-hydroxyethyl)aziridine] homopolymers.

SYNTHESIS AND CHARACTERIZATION OF POLY([(2-methacryloyloxy) ethyl]) TRIMETHYLAMONNIUM CHLORIDE) RESIN WITH REMOVAL PROPERTIES FOR VANADIUM(V) AND MOLYBDENUM(VI)

“…In table 10 is possible to observe that the presence of these anions decrease dramatically the retention of V(V) by PClMETA resin, this mean that Cl -, PO 4 3-, and SO 4 2-anions compete with the V(V) ion for the active sites of PClMETA resin, due to the electrostatic forces produced by their ionic form.…”

“…It was studied the removal properties of V(V) by PClMETA resin in presence of the interferents Cl -, PO 4 3-, and SO 4 2-, because they are the principal anions found in water. In table 10 is possible to observe that the presence of these anions decrease dramatically the retention of V(V) by PClMETA resin, this mean that Cl -, PO 4 3-, and SO 4 2-anions compete with the V(V) ion for the active sites of PClMETA resin, due to the electrostatic forces produced by their ionic form.…”

“…The treatment of heavy metals is of special concern due to their recalcitrance and persistence in the environment. In recent years, various methods for heavy metal removal from wastewater have been extensively studied [2][3][4][5][6][7][8][9]. These technologies include chemical precipitation, ion exchange, adsorption, membrane filtration, coagulation-flocculation, flotation and electrochemical methods.…”

Fluorescent ultrahigh-molecular-weight polyacrylamide probes for dynamic flow systems: Synthesis, conformational behavior and imaging

“…[12] The -COOH and -CONH 2 functional groups in HPAm have complexing properties with metal ions. [16] Thus, the dansyllabeled HPAm will hold both photoluminescence and metal-complexing properties.…”

“…and environmental [12] applications. Some key reasons for these interests are the low cost of acrylamide monomers and polyacrylamides, the relative ease of copolymerization of acrylamide with other functional acrylamide monomers, the versatility in applications and, above all else, a good biocompatibility with DNA in vitro.…”