Design, equilibrium and operation for ultrasound assisted batch adsorption of Cr (VI) on some nano-bioadsorbent

Authors

  • Swagatam Sarkar  Department of Chemistry, University of Kalyani, Kalyani, West Bengal, India
  • Mitali Sarkar  Department of Chemistry, University of Kalyani, Kalyani, West Bengal, India

Keywords:

Chromium adsorption, Iron(III) modified cellulose nanocomposite bead, Ultrasound assisted batch operation, Feasibility, Recycling

Abstract

Adsorptive removal of chromium species was designed using iron(III) modified cellulose nanocomposite under ultrasound assisted batch operation. The parameters influencing the operational performance were investigated to maximize the efficiency. The process is found to be governed by pH, adsorbent dose, sonication time and initial concentration at fixed temperature. The synthesized adsorbent is found specific for Cr(VI) species. The maximum efficiency was achieved at pH 3.5, dose of 3.0 g/L and sonication time of 30 minutes for each initial concentration at fixed temperature studied. The process was found favorable as the separation factor values were found to be within 0-1. Isotherm fitting of the experimental data indicates that Tempkin model is more suitable than the Langmuir and Freundlich. The thermodynamic parameters such as change in Gibbs free energy, enthalpy and entropy were evaluated. The process is found to be favorable, spontaneous and endothermic in nature. The elution of Cr(VI) was achieved with NaOH solution and the adsorbent can be reused for five successive adsorption-elution cycles.

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International Journal of Scientific Research in Science and Technology

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Published

2017-08-31

Issue

Volume 3, Issue 6, July-August-2017

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Research Articles

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How to Cite

[1]
Swagatam Sarkar, Mitali Sarkar "Design, equilibrium and operation for ultrasound assisted batch adsorption of Cr (VI) on some nano-bioadsorbent" International Journal of Scientific Research in Science and Technology(IJSRST), Online ISSN : 2395-602X, Print ISSN : 2395-6011,Volume 3, Issue 6, pp.627-633, July-August-2017.