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Sorption kinetics of zinc and nickel on modified chitosan
Environmental Monitoring and Assessment
  • Nimisha Tripathi, University of South Australia
  • Girish Choppala, Southern Cross University
  • Raj S Singh
  • Prashant Srivastava, The University of Newcastle
  • Balaji Seshadri, The University of Newcastle
Document Type
Article
Publication Date
1-1-2016
Peer Reviewed
Peer-Reviewed
Abstract

This study was conducted to evaluate the effect of equilibration time on adsorption of zinc [Zn(II)] and nickel [Ni(II)] on pure and modified chitosan beads. The initial adsorption of Zn(II) was high on molybdenum (Mo)-impregnated chitosan beads (MoCB) during the initial 60 min. However, after 240 min, Zn(II) adsorption occurred more on single super phosphate chitosan beads (SSPCB), followed by monocalcium phosphate chitosan beads (MCPCB), untreated pure chitosan beads (UCB), and MoCB. Similarly, Ni(II) adsorption was greatest on MoCB during the initial 60 min. At the conclusion of the experiment (at 240 min), the greatest adsorption was occurred on MCPCB, followed by MoCB, UCB, and SSPCB. Chemical sorption and intra-particle diffusion were probably the dominant processes responsible for Zn(II) and Ni(II) sorption onto chitosan beads. The results demonstrated that modified chitosan beads were effective in adsorbing Zn and Ni and hence, could be used for the removal of these toxic metals from soil.

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Citation Information

Tripathi, N, Choppala, G, Singh, RS, Srivastava, P & Seshadri, B 2016, 'Sorption kinetics of zinc and nickel on modified chitosan', Environmental Monitoring and Assessment, vol. 188, no. 9.

Article available on Open Access