期刊
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
卷 301, 期 2, 页码 537-543出版社
SPRINGER
DOI: 10.1007/s10967-014-3184-0
关键词
Biosorption; Saccharomyces cerevisiae; Uranyl ions; Immobilization; Clinoptilolite
This study deals with the uptake of uranyl ions from aqueous solution using bio-modified natural clinoptilolite. The biosorption experiments were carried out in a batch system. Cell immobilization process and sorption of uranyl ions were confirmed by scanning electron microscopy and inductively coupled plasma-optical emission spectroscopy techniques, respectively. The adsorption equilibrium was reached in 4 h, the optimum pH was 4.5 and the temperature had no significant effect on the uranyl biosorption. The experimental data were well fitted with Langmuir isotherm and pseudo-second-order kinetic models. The maximum sorption capacity of cell immobilized clinoptilolite was 0.148 mmol (UO22+) g(-1) dry sorbent.
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