Comparative adsorption of metal and dye on flake- and bead-types of chitosans prepared from fishery wastes

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

*Corresponding author for this work

Research output: Contribution to journalJournal Article peer-review

289 Scopus citations

Abstract

The adsorption capacities and rates of Cu(II) and a commercial reactive dye RR222 on flake- and bead-types of chitosans prepared from three fishery wastes (shrimp, crab, and lobster shells) were compared at 30°C. It was shown that all equilibrium isotherms could be well fitted by the Langmuir equation. The adsorption capacity of Cu(II) on flake- and bead-types of chitosans appeared to be comparable, but the adsorption capacity of RR222 on bead type was much larger than that on flake type by a factor of 2.0-3.8. The rates of dye adsorption on both types of chitosans indicated different controlling mechanisms. In addition, the bead type of chitosans exhibited a greater rate compared to the flake type. (C) 2000 Elsevier Science B.V.

Original languageEnglish
Pages (from-to)63-75
Number of pages13
JournalJournal of Hazardous Materials
Volume73
Issue number1
DOIs
StatePublished - 13 03 2000
Externally publishedYes

Keywords

  • Bead
  • Chitosan
  • Comparative adsorption
  • Dye
  • Fishery wastes
  • Flake
  • Metal

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