|Title:||Biosorption of Sr(II) from aqueous solutions using aerobic granules: equilibrium and mechanisms||Authors:||Wang L.
|Keywords:||Adsorption mechanism;Aerobic granules;Isotherm;Removal;Strontium||Issue Date:||2015||Journal Volume:||306||Journal Issue:||1||Start page/Pages:||193-202||Source:||Journal of Radioanalytical and Nuclear Chemistry||Abstract:||
Aqueous strontium biosorption using aerobic granules was investigated. Parameters affecting the biosorption were optimized, including initial pH, biomass dosage, temperature, and rotation speed. The equilibrium data were fitted using Langmuir and Freundlich models, and both could well describe the process (R2?=?0.987 and 0.989, respectively). Ion exchange and water-desorption experiments were conducted, and ion exchange together with physical adsorption were found to be the main mechanisms. The aerobic granules were characterized with methods including scanning electron microscopy, X-ray photoelectron spectroscopy, and Fourier transform infrared spectroscopy. The results showed that surface complexation could also be involved in the Sr(II) biosorption. ? 2015, Akad?miai Kiad?, Budapest, Hungary.
|Appears in Collections:||化學工程學系|
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