Removal of Cu(II) from aqueous solutions by living and non-living cultured sludges: equilibrium modelling
by Poh-Ying Chan; Si-Ling Ng; Chye-Eng Seng; Poh-Eng Lim
International Journal of Environmental Technology and Management (IJETM), Vol. 15, No. 1, 2012

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.

Online publication date: Wed, 17-Dec-2014

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