Preparation of Fe oxide nanoparticles for environmental applications: arsenic removal

Environ Geochem Health. 2010 Aug;32(4):291-6. doi: 10.1007/s10653-010-9301-2. Epub 2010 Apr 13.

Abstract

The objective of this study is to examine the adsorption-desorption behavior of a magnetically active hybrid sorbent (MAHS) material, prepared by dispersing colloid-like hydrated iron oxide particles in the outer periphery of a macroporous ion-exchange resin (Amberlite XAD-2). The experimental results show that the new sorbent material can simultaneously remove arsenic (V) and a chlorinated organic compound (2,6-dichlorophenol [2,6-DCP]) from aqueous solutions at around neutral pH. The recovery of arsenic and 2,6-DCP from MAHS was conducted using a regenerant containing 50% (v/v) CH3OH + 3% (w/v) NaOH. In less than 10 bed volumes of regenerant, more than 90% of As(V) and 2,6-DCP were recovered.

Publication types

  • Evaluation Study
  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

  • Adsorption
  • Arsenic / analysis
  • Arsenic / chemistry*
  • Chlorophenols / analysis
  • Chlorophenols / chemistry
  • Ferric Compounds / chemistry*
  • Metal Nanoparticles / chemistry*
  • Water / chemistry*
  • Water Purification / methods*

Substances

  • Chlorophenols
  • Ferric Compounds
  • Water
  • ferric oxide
  • Arsenic
  • 2,6-dichlorophenol