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Biosorption of lead by maize (Zea mays) stalk sponge
- Source :
-
Journal of Environmental Management . Nov2010, Vol. 91 Issue 11, p2079-2086. 8p. - Publication Year :
- 2010
-
Abstract
- This study investigated the removal of Pb(II) from aqueous solutions by a maize (Zea mays) stalk sponge. Equilibrium and kinetic models for Pb(II) sorption were developed by considering the effect of the contact time and concentration at the optimum pH of 6 ± 0.2. The Freundlich model was found to describe the sorption energetics of Pb(II) by Z. mays stalk sponge, and a maximum Pb(II) loading capacity of 80 mg g−1 was determined. The kinetic parameters were obtained by fitting data from experiments measuring the effect of contact time on adsorption capacity into pseudo-first and second-order equations. The kinetics of Pb(II) sorption onto Z. mays biosorbent were well defined using linearity coefficients (R 2) by the pseudo-second-order equation (0.9998). The results obtained showed that Zea may stalk sponge was a useful biomaterial for Pb(II) sorption and that pH has an important effect on metal biosorption capacity. [Copyright &y& Elsevier]
Details
- Language :
- English
- ISSN :
- 03014797
- Volume :
- 91
- Issue :
- 11
- Database :
- Academic Search Index
- Journal :
- Journal of Environmental Management
- Publication Type :
- Academic Journal
- Accession number :
- 52862903
- Full Text :
- https://doi.org/10.1016/j.jenvman.2010.06.004