Journal
JOURNAL OF HAZARDOUS MATERIALS
Volume 160, Issue 2-3, Pages 655-661Publisher
ELSEVIER
DOI: 10.1016/j.jhazmat.2008.03.038
Keywords
Penicillium simplicissimum; Metal ions; Biosorption; Isotherm; Kinetics; Thermodynamics
Categories
Funding
- National Natural Science Foundation of Hunan [04JJ3013]
- Doctoral Program Foundation [20050532009]
- Ministry of Education of China
Ask authors/readers for more resources
The isotherms, kinetics and thermodynamics of Cd(II), Zn(II) and Pb(II) biosorption by Penicillium simplicissimum were investigated in a batch system. The effects of pH, initial metal ions concentration, biomass dose, contact time, temperature and co-ions on the biosorption were studied. Adsorption data were well described by both the Redlich-Peterson and Langmuir model. Chemical ion-exchange was found to be an important process based on free energy value from Dubini-Radushkevich isotherm for all metal ions. The results of the kinetic studies of all metal ions at different temperature showed that the rate of adsorption followed the pseudo second-order kinetics well. The thermodynamics constants Delta G degrees, Delta H degrees, and Delta S degrees, of the adsorption process showed that biosorption of Cd(II), Zn(II) and Pb(H) ions on Penicillium simplicissimum were endothermic and spontaneous. (C) 2008 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available