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Uranium biosorption by Padina sp. algae biomass: kinetics and thermodynamics.
- Source :
-
Environmental science and pollution research international [Environ Sci Pollut Res Int] 2011 Nov; Vol. 18 (9), pp. 1593-605. Date of Electronic Publication: 2011 May 24. - Publication Year :
- 2011
-
Abstract
- Introduction: Kinetic, thermodynamic, and equilibrium isotherms of the biosorption of uranium ions onto Padina sp., a brown algae biomass, in a batch system have been studied.<br />Discussion: The kinetic data were found to follow the pseudo-second-order model. Intraparticle diffusion is not the sole rate-controlling factor. The equilibrium experimental results were analyzed in terms of Langmuir isotherm depending with temperature. Equilibrium data fitted very well to the Langmuir model. The maximum uptakes estimated by using the Langmuir model were 434.8, 416.7, 400.0, and 370.4 mg/g at 10°C, 20°C, 30°C, and 40°C, respectively. Gibbs free energy was spontaneous for all interactions, and the adsorption process exhibited exothermic enthalpy values. Padina sp. algae were shown to be a favorable biosorbent for uranium removal from aqueous solutions.
- Subjects :
- Adsorption
Biodegradation, Environmental
Biomass
Environmental Monitoring
Industrial Waste
Ions
Models, Chemical
Solutions
Temperature
Water Purification methods
Phaeophyceae chemistry
Uranium chemistry
Uranium pharmacokinetics
Water Pollutants, Radioactive chemistry
Water Pollutants, Radioactive pharmacokinetics
Subjects
Details
- Language :
- English
- ISSN :
- 1614-7499
- Volume :
- 18
- Issue :
- 9
- Database :
- MEDLINE
- Journal :
- Environmental science and pollution research international
- Publication Type :
- Academic Journal
- Accession number :
- 21607729
- Full Text :
- https://doi.org/10.1007/s11356-011-0518-0