Removal and recovery of acridine orange from solutions by use of magnetic nanoparticles

Shahnaz Qadri, Ashley Ganoe, Yousef Haik

Research output: Contribution to journalArticlepeer-review

163 Citations (Scopus)


Here we report a separation of a cationic dye, acridine orange (AO), by use of magnetic nanoparticles (γ-Fe2O3). The particles were showed to capture 98% of the dye within the first 20 min of contact time. The maximum sorption capacity of the magnetic nanoparticles (MNPs) for AO was 59 mg/g. The sorption isotherms fit well with the Freundlich model. The sorption kinetics fits well the pseudo-second-order rate equation model. 60-90% dye recovery was achieved by rotary evaporating the dye bearing nanoparticles in acetone. The nanoparticles were recycled for additional dye removal.

Original languageEnglish
Pages (from-to)318-323
Number of pages6
JournalJournal of Hazardous Materials
Issue number1-3
Publication statusPublished - Sept 30 2009


  • Acridine orange
  • Dye recovery
  • Magnetic
  • Nanoparticles

ASJC Scopus subject areas

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


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