Biosorption of Cu(II) and Pb(II) from aqueous solutions by dried activated sludge

Xue-Jiang Wang , Ling Chen , Si-Qing Xia , Jian-Fu Zhao , Jean-Marc Chovelon , Nicole Jaffrezic-Renault (1, 2)

1 AMPERE - Ampère
2 CEGELY - Centre de génie électrique de Lyon

The biosorption of Cu(II) and Pb(II) ions from aqueous solutions by dried activated sludge was investigated as a function of initial pH, initial metal ion concentration and temperature. The results showed that both the heavy metals uptake processes followed the pseudo-second-order equation. The equilibrium data fitted very well to both Langmuir and Freundlich adsorption models. The main mechanism of Cu(II) and Pb(II) biosorption on dried activated sludge was their binding with amide I group.

Mots clés: biosorption; adsorption isotherm; heavy metal; activated sludge

Domaines: Energie électrique

Xue-Jiang Wang, Ling Chen, Si-Qing Xia, Jian-Fu Zhao, Jean-Marc Chovelon, et al.. Biosorption of Cu(II) and Pb(II) from aqueous solutions by dried activated sludge. Minerals Engineering, 2006, 19 (9), pp.968-971. ⟨hal-00141432⟩