Experimental Study of Removing (Zn + 2) by Nano Structure Cedar Fly Ash (zizyphus spinachristi) From Industrial Waste Water

Document Type : Research Paper

Authors

1 Ph.D. Student, Department of Irrigation Drainage, Faculty of water Sciences Engineering, Shahid Chamran University, Ahwaz, Iran.

2 Professor, Faculty of Water Sciences Engineering, Shahid Chamran University, Ahwaz, Iran.

3 Principal of Water Quality Lab of Khuzestan Water & Power Authority, Ahwaz, Iran.

4 Ph.D. Student, Department of Irrigation and Drainage, Faculty of Agriculture, Ferdowsi University, Mashhad, Iran.

Abstract

     Removal of toxic heavy metals from wastewater is an important environmental challenge. In this work, the nano particle of zizyphus spinachristi fly ash is used as a fit adsorbent for the removal of Zn2+ from aqueous solutions and industrial wastewaters. Bath experiments were used to determine the best adsorption conditions. The experiment showed that the adsorption capacity of nano particle of zizyphus spinachristi fly ash is a function of pH, contact time, amount of adsorbent and initial concentration in solution. Maximum adsorption of Zn2+ was obtained at pH of 5, contact time 30 min, amount of adsorbent 20 g/L and initial concentration of 2 mg/L. The Ho et al. and Lagergern kinetic models were used to determine the correlation among the experimental data. The correlation coefficients obtained for Ho et al. (R2= 0.9979) and Lagergern)R2=0.9925) models showed that the Lagergern model described better the experimental data. Metal adsorption onto adsorbent was evaluated by Langmuir and Freundlich isotherms. Results indicated. the Langmuir isotherm model(0.9645) is the most suitable one for the adsorption process using sheep gut waste.
 
 

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History

  • Receive Date: 09 October 2011
  • Revise Date: 01 October 2014
  • Accept Date: 20 November 2012
  • Publish Date: 22 May 2013

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