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Removal of Cu(II) from aqueous solutions by living and non-living cultured sludges: equilibrium modelling

Author

Listed:
  • Poh-Ying Chan
  • Si-Ling Ng
  • Chye-Eng Seng
  • Poh-Eng Lim

Abstract

In this study, the removal of Cu(II) from aqueous solutions using living and non-living cultured sludges of different sludge ages was investigated. For non-living sludge, only the metabolism-independent bio-adsorption process occurred and Langmuir model was adequate to describe the adsorption isotherm. When living sludge was used as the adsorbent, a proposed model incorporating the bio-adsorption and bioaccumulation processes in sequence was found to fit better than the Langmuir model and provided a better interpretation of the metal uptake by living sludge. The bioaccumulation process was observed to be the predominant process in removing Cu(II) from the aqueous solutions.

Suggested Citation

  • Poh-Ying Chan & Si-Ling Ng & Chye-Eng Seng & Poh-Eng Lim, 2012. "Removal of Cu(II) from aqueous solutions by living and non-living cultured sludges: equilibrium modelling," International Journal of Environmental Technology and Management, Inderscience Enterprises Ltd, vol. 15(1), pages 79-93.
    • Handle: RePEc:ids:ijetma:v:15:y:2012:i:1:p:79-93
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