Cationic water-soluble polymers with ability to remove arsenate using ultrafiltration technique

BERNABE L. RIVAS, MARÝA DEL CARMEN AGUIRRE, EDUARDO PEREIRA

JOURNAL OF APPLIED POLYMER SCIENCE

JOHN WILEY & SONS INC

Año: 2007 vol. 106 p. 89 - 94

0021-8995

Abstracts Different cationic water-soluble polymers with (R)4N+X- groups and pyridinium were prepared and their arsenate retention performance was investigated with the liquid-phase polymer-based retention technique.  Poly[3-(methacryloylamino)propyl]trimethylammonium chloride, poly[2-(acryloyloxy)ethyl] trimethylammonium chloride,  ;  poly(ar-vinylbenzyl) trimethylammonium chloride, poly[2-(acryloyloxy)ethyl] trimethylammonium methyl sulfate, poly(4-vinyl-1-methyl-pyridinium) bromide, and  poly[3-(methacryloylamino)propyl]dimethyl(3-sulfopropyl) ammonium hydroxide, were prepared. The synthesis of the polymers by solution radical polymerization  produced a yield higher 77%. Structural analysis were performed with Fourier transform infrared and  and 1H-NMR spectroscopy, and Thermogravimetry/differential scanning calorimetry. Commercial poly(4-vinyl-1-methyl-pyridinium) bromide, and poly(ar-vinylbenzyl)trimethylammonium chloride, were also used. The liquid-phase polymer-based retention technique was employed to study the retention of arsenate species. The polymer structure and exchange groups, such as methyl sulphate, chloride, bromide, and hydroxide, presented different properties for removing arsenate anions from aqueous solution. The type of  voluminous quaternary ammonium group  present influenced arsenic retention. All the polymers could  bind HAsO4= species from an aqueous solution more selectively at pH 8 and 6, than that at pH 4. 2007 Wiley Periodicals, Inc. Wiley InterScience.