Chemical modification of chitin with polypyrrole for the uptake of Pb(II) and Cd(II) ions

Rathinam Karthik, Sankaran Meenakshi

Research output: Contribution to journalArticlepeer-review

69 Scopus citations

Abstract

This study described the possibility of using chemically modified chitin with polypyrrole (PPy-g-Ch) as an adsorbent for the removal of Pb(II) and Cd(II) ions from aqueous solution. The PPy-g-Ch was characterized using FTIR, SEM, EDX, XRD, TGA and DSC techniques. The influence of various parameters such as pH, dosage, co-ions, contact time and concentration on the removal of Pb(II) and Cd(II) ions was investigated. Among the various isotherm models studied, the Freundlich isotherm model fitted well to the equilibrium data. The magnitude of δG0, δH0 and δS0 indicated the feasibility, spontaneity and the endothermic nature of the adsorption process, respectively. The kinetic process followed the pseudo-second-order kinetic model. The applicability of the PPy-g-Ch has been tested for the removal of Pb(II) and Cd(II) ions from a real water sample spiked with Pb(II) and Cd(II) ions.

Original languageEnglish
Pages (from-to)157-164
Number of pages8
JournalInternational Journal of Biological Macromolecules
Volume78
DOIs
StatePublished - 1 Jul 2015
Externally publishedYes

Keywords

  • Adsorption
  • Chitin
  • Polypyrrole

ASJC Scopus subject areas

  • Molecular Biology
  • Structural Biology
  • Biochemistry

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