A review and experimental verification of using chitosan and its derivatives as adsorbents for selected heavy metals

Feng Chin Wu, Ru Ling Tseng, Ruey Shin Juang*

*Corresponding author for this work

Research output: Contribution to journalReview articlepeer-review

316 Scopus citations

Abstract

A literature survey on liquid-phase adsorption of selected heavy metals including Cu(II), Zn(II), Ni(II), Cd(II), Pb(II), Hg(II), and Cr(VI) on chitosan (CTS) and its derivatives was made from the viewpoint of adsorption capacity. This parameter was obtained from the Langmuir fit of isotherm data. The magnitude of adsorption capacity of heavy metals on pristine CTS was also used to discuss the mechanism of adsorption; that is, how many amino groups in CTS chains would coordinate with one heavy metal ion. Furthermore, a newly defined parameter, the approaching equilibrium factor RL, was proposed to quantitatively indicate the favorability of the related adsorption process and to judge the correctness of adsorption capacity determined by the Langmuir equation.

Original languageEnglish
Pages (from-to)798-806
Number of pages9
JournalJournal of Environmental Management
Volume91
Issue number4
DOIs
StatePublished - 2010
Externally publishedYes

Keywords

  • Adsorption capacity
  • Chemical modification
  • Chitosan
  • Heavy metals
  • Langmuir isotherm

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