Biosorption of Pb(II) and Cd(II) ions from aqueous solution using polyaniline/chitin composite

Rathinam Karthik, Sankaran Meenakshi

Research output: Contribution to journalArticlepeer-review

25 Scopus citations


In this study, chitin (Ch) was made composite with polyaniline (PANI) and used for the removal of Pb(II) and Cd(II) ions from aqueous solution. Characterization techniques such as Fourier transform infrared spectroscopy, scanning electron microscope, energy-dispersive X-ray analyser and X-ray diffraction were employed to characterize the prepared PANI/Ch composite. Influence of various equilibrium parameters on the adsorption of Pb(II) and Cd(II) ions onto PANI/Ch composite was investigated. The adsorption process followed the Freundlich isotherm model, and the calculated maximum monolayer sorption capacity of PANI/Ch composite for Pb(II) and Cd(II) ions is 7.03 and 6.05 mg g−1 at 303 K. The kinetic data were well described by the pseudo-second-order model.

Original languageEnglish
Pages (from-to)733-742
Number of pages10
JournalSeparation Science and Technology
Issue number5
StatePublished - 23 Mar 2016
Externally publishedYes


  • Adsorption
  • chitin
  • kinetics
  • polyaniline

ASJC Scopus subject areas

  • General Chemistry
  • General Chemical Engineering
  • Process Chemistry and Technology
  • Filtration and Separation


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