High efficiency removal of dissolved As(III) using iron nanoparticle-embedded macroporous polymer composites

Irina N. Savina, Christopher J. English, Raymond L.D. Whitby, Yishan Zheng, Andre Leistner, Sergey V. Mikhalovsky, Andrew B. Cundy

Research output: Contribution to journalArticlepeer-review

63 Citations (Scopus)

Abstract

Novel nanocomposite materials where iron nanoparticles are embedded into the walls of a macroporous polymer were produced and their efficiency for the removal of As(III) from aqueous media was studied. Nanocomposite gels containing α-Fe 2O 3 and Fe 3O 4 nanoparticles were prepared by cryopolymerisation resulting in a monolithic structure with large interconnected pores up to 100μm in diameter and possessing a high permeability (ca. 3×10 -3ms -1). The nanocomposite devices showed excellent capability for the removal of trace concentrations of As(III) from solution, with a total capacity of up to 3mg As/g of nanoparticles. The leaching of iron was minimal and the device could operate in a pH range 3-9 without diminishing removal efficiency. The effect of competing ions such as SO 4 2- and PO 4 3- was negligible. The macroporous composites can be easily configured into a variety of shapes and structures and the polymer matrix can be selected from a variety of monomers, offering high potential as flexible metal cation remediation devices.

Original languageEnglish
Pages (from-to)1002-1008
Number of pages7
JournalJournal of Hazardous Materials
Volume192
Issue number3
DOIs
Publication statusPublished - Sep 15 2011

Keywords

  • Adsorbent
  • Arsenic
  • Iron
  • Nanoparticle
  • Water remediation

ASJC Scopus subject areas

  • Environmental Engineering
  • Environmental Chemistry
  • Waste Management and Disposal
  • Pollution
  • Health, Toxicology and Mutagenesis

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