Separation and preconcentration of trace elements and their physico-chemical forms in aqueous media using inert solid membranes (Technical Report)

Spivakov, B. Ya.; Shkinev, V. M.; Geckeler, K. E.

doi:10.1351/pac199466030631

Cited by 49 publications

(33 citation statements)

References 13 publications

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“…The metal ion binding studies were carried with a membrane filtration equipment, which has been described previously. 19 The membrane filtration consisted of a membrane filtration cell containing the polychelatogen solution, to which the solutions of metal ions were added under stir- …”

Section: Methodsmentioning

confidence: 99%

“…This method, based on the retention of certain metal ions by a membrane that separates low-molecular mass compounds from macromolecular complexes of the metal ions, is called Liquid-phase Polymerbased Retention (LPR). 19,20 A number of soluble and hydrophilic polymers with chelating groups have been prepared. A salient feature of these polychelatogens is their high solubility and hydrophilicity, which allows one to carry out the complexation in an aqueous phase.…”

Section: Introductionmentioning

confidence: 99%

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Synthesis of water‐soluble polymers containing sulfonic acid and amine moieties for the recovery of metal ions using ultrafiltration

Rivas¹,

Pooley²,

Luna³

et al. 2001

J of Applied Polymer Sci

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ABSTRACT:Copolymers from 2-acrylamido-2-methyl-propane sulfonic acid (APSA) and N-acryloyl-N-methyl piperazine (AP) were synthesized by radical polymerization with ammonium peroxydisulfate as the initiator. The copolymerization yield ranged between 93 and 95%. The copolymers were completely water soluble, and were characterized by FTIR and NMR spectroscopy. The copolymer composition was determined from elemental analysis through the S/C ratio. The binding capacity for metal ion was studied by the LPR technique at different pH and filtration factors. The retention depended strongly on the pH and on the copolymer composition. With increasing pH and increasing content of APSA units in the copolymer, the metal ion retention increased.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Synthesis of water‐soluble polymers containing sulfonic acid and amine moieties for the recovery of metal ions using ultrafiltration

Rivas¹,

Pooley²,

Luna³

et al. 2001

J of Applied Polymer Sci

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“…Polymers as metal ion‐complexing agents, such as poly(ethyleneimine), poly(vinylpyrrolidone), polyacrylamide, have been extensively studied; others have been widely applied to the concentration and separation of various elements 9–20. Hydrophilic polymers with complexing groups (polychelatogens) have been tested to show applicability to the separation of various metal cations and anionic species for analytical and technological purposes.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Properties of Hydrophilic Polymers, 10

Pizarro

Marambio

et al. 2003

Macro Chemistry & Physics

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Water‐soluble poly[(N‐maleoylglycine)‐co‐(hydroxyethyl methacrylate)] was employed for the separation of a series of metal ions in the aqueous phase using the liquid‐phase polymer‐based retention method. The method is based on the retention of inorganic ions by this polymer in conjunction with membrane filtration and subsequent separation of low‐molecular‐mass species from the polymer complex formed. It is shown that the polymer can bind several metal ions in aqueous solution at pH 3, 5, and 7, for example Cr(II), Co(II), Zn(II), Ni(II), Cu(II), Cd(II), Pb(II) inorganic ions. The interaction of the inorganic ions with the hydrophilic polymer was determined as a function of pH and filtration factor. The water‐soluble polymeric reagent with strong metal‐complexing properties was synthesized and used to separate complexed from non‐complexed ions in the homogeneous phase. The polymer exhibited high retention capability at pH 5 and 7. It was characterized by elemental analysis, FT‐IR, 1H NMR, and 13C NMR spectroscopy, as well as by thermogravimetry. Additionally, viscosimetric measurements of the copolymer were performed at different pH values. magnified image

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“…Hydrophilic polymers with complexing groups, termed polychelatogens, have been tested to show the applicability of the method to the separation of various metal cations and anionic species for analytical and technological purposes, such as the treatment of wastewater, groundwater, and seawater; separation of radionuclides and measurement of binding properties of metal ions. [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18] The ligands and their metal complexes can be retained by an ultrafilter, whereas the free metal ions pass through the filtration membrane. This method is called liquidphase polymer-based retention.…”

Section: Introductionmentioning

confidence: 99%

Water‐soluble copolymers of 1‐vinyl‐2‐pyrrolidone and acrylamide derivatives: synthesis, characterization, and metal binding capability studied by liquid‐phase polymer‐based retention technique

Rivas

Pooley

Soto

et al. 1999

J. Appl. Polym. Sci.

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Radical copolymerizations of 1-vinyl-2-pyrrolidone with acrylamide and N,NЈ-dimethylacrylamide at different feed ratios were investigated. The copolymers were characterized by Fourier transform infrared spectroscopy, 1 H NMR, and 13 C NMR spectroscopy. The copolymer composition was determined from the 1 H NMR spectra and found to be statistical. The metal complexation of poly(acrylamide-co-1-vinyl-2pyrrolidone) and poly(N,NЈ-dimethylacrylamide-co-1-vinyl-2-pyrrolidone) for the metal ions Cu(II), Co(II), Ni(II), Cd(II), Zn(II), Pb(II), Fe(III), and Cr(III) were investigated in an aqueous phase. The liquid-phase polymer-based retention method is based on the retention of inorganic ions by soluble polymers in a membrane filtration cell and subsequent separation of low-molecular compounds from the polymer complex formed. The metal ion interaction with the hydrophilic polymers was determined as a function of the pH and the filtration factor. Poly(N,N-dimethylacrylamide-co-1-vinyl-2-pyrrolidone) showed a higher affinity for the metal ions than poly(acrylamide-co-1-vinyl-2pyrrolidone). According to the interaction pattern obtained, Cr(III) and Cu(II) formed the most stable complexes at pH 7. Pb(II) and Zn(II) were not retained.

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Separation and preconcentration of trace elements and their physico-chemical forms in aqueous media using inert solid membranes (Technical Report)

Abstract: Abstract

Cited by 49 publications

References 13 publications

Synthesis of water‐soluble polymers containing sulfonic acid and amine moieties for the recovery of metal ions using ultrafiltration

Synthesis of water‐soluble polymers containing sulfonic acid and amine moieties for the recovery of metal ions using ultrafiltration

Synthesis and Properties of Hydrophilic Polymers, 10

Water‐soluble copolymers of 1‐vinyl‐2‐pyrrolidone and acrylamide derivatives: synthesis, characterization, and metal binding capability studied by liquid‐phase polymer‐based retention technique

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