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Arsenic (V) removal with modifiable bulk and nano p(4-vinylpyridine)-based hydrogels: The effect of hydrogel sizes and quarternization agents

Sahiner, Nurettin ; Ozay, Ozgur ; Aktas, Nahit ; Blake, Diane A ; John, Vijay T

Desalination, 2011, Vol.279(1), pp.344-352 [Periódico revisado por pares]

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  • Título:
    Arsenic (V) removal with modifiable bulk and nano p(4-vinylpyridine)-based hydrogels: The effect of hydrogel sizes and quarternization agents
  • Autor: Sahiner, Nurettin ; Ozay, Ozgur ; Aktas, Nahit ; Blake, Diane A ; John, Vijay T
  • Assuntos: Nanogel/Microgel ; Hydrogel ; Modification ; Arsenic Removal ; P(4-VP) Magnetic-Composites ; Nanogel/Microgel ; Hydrogel ; Modification ; Arsenic Removal ; P(4-VP) Magnetic-Composites ; Engineering
  • É parte de: Desalination, 2011, Vol.279(1), pp.344-352
  • Descrição: Macrogels and nanogels (5 × 6 mm and 370 nm dimensions, respectively) based on 4-vinylpyridine (p-(4VP)) were prepared using redox and microemulsion techniques. The p(4-VP)-based materials were quaternized with HCl/alkyhalides having different chain lengths to tune the charges (macro and nanogels) and size of nanogels. By developing positive charge on the p(4-VP) materials, they behaved as ion exchangers and used in removal of As(V) from aqueous environments. The prepared p(4-VP) materials were also rendered responsive to magnetic field by in situ incorporation of magnetic metal nanoparticles inside macro p(4-VP) hydrogels and by encapsulation of separately prepared magnetic ferrites by nanosized p(4-VP) particles. Nanoparticles quaternized with HCl (p(4-VP)-HCl) (1 g) removed over 95% of As(V) from a stock solution (10 mg L − 1 , 1000 mL) in 15 min whereas bulk hydrogels removed 82% of the As(V) from an equivalent solution in ~ 12...
  • Idioma: Inglês

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