Statistical analysis of the removal of Chromium(VI)by Iron Oxide Nanoparticle (Fe3O4)

  • Najwa Saber Majeed College of Engineering-University of Baghdad
  • Duaa Mohammed Naji College of Engineering-University of Baghdad
Keywords: Chromium (VI), Adsorption, Design of experiments, Iron Oxide Nanoparticle (Fe3O4).

Abstract

Investigation of the adsorption of Chromium (VI) on Fe3O4 is carried out using batch scale experiments according to statistical design using a software program minitab17 (Box-Behnken design). Experiments were carried out as per Box-Behnken design with four input parameters such as pH (2-8), initial concentration (50–150mg/L), adsorbent dosage (0.05–0.3 g) and time of adsorption (10–60min). The better conditions were showed at pH: 2; contact time: 60 min; chromium concentration: 50 mg/L and magnetite dosage: 0.3 g for maximum Chromium (VI) removal of (98.95%) with an error of 1.08%. The three models (Freundlich, Langmuir, and Temkin) were fitted to experimental data, Langmuir isotherm has better described the adsorption process. Whereas, the kinetics results of the adsorption process obeyed the pseudo-second-order.

 

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Published
2018-02-01
How to Cite
Majeed, N. and Naji, D. (2018) “Statistical analysis of the removal of Chromium(VI)by Iron Oxide Nanoparticle (Fe3O4)”, Journal of Engineering, 24(2), pp. 62-79. Available at: http://joe.uobaghdad.edu.iq/index.php/main/article/view/525 (Accessed: 7August2020).