Nanostructured Fe2O3/Al2O3 Adsorbent for removal of As (V) from water

Document Type : Research Paper


1 Department of Chemical Engineering, Faculty of Engineering, University of Kurdistan, Sanandaj, Iran

2 Department of Environmental Science, Faculty of Natural Resources, University of Kurdistan, Sanandaj, Iran


The presence of arsenate in drinking water causes adverse health effects including skin lesions, diabetes, cancer, damage to the nervous system, and cardiovascular diseases. Therefore, the removal of As (V) from water is necessary. In this work, nanostructured adsorbent Fe2O3/Al2O3 was synthesized via the sol-gel method and applied to remove arsenate from polluted waters. First, the Fe2O3 load of the adsorbent was optimized. The Fe2O3/Al2O3 adsorbent was characterized by means of XRF, XRD, ASAP, and SEM techniques. The effects of the operating conditions of the batch process of As (V) adsorption such as pH, adsorbent dose, contact time, and initial concentration of As (V) solution were studied, and optimized. The thermodynamic study of the process showed that arsenate adsorption was endothermic. The kinetic model corresponded to the pseudo-second-order model. The Langmuir adsorption isotherm was better fitted to the experimental data. The Fe2O3/Al2O3 adsorbent was immobilized on leca granules and applied for As (V) adsorption. The results showed that the immobilization of Fe2O3/Al2O3 on leca particles improved the As (V) removal efficiency.


Main Subjects

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Volume 3, Issue 2
April 2017
Pages 67-75
  • Receive Date: 07 February 2017
  • Revise Date: 24 August 2017
  • Accept Date: 25 August 2017
  • First Publish Date: 25 August 2017