NDLI: Adsorption of uranium(VI) by grapefruit peel in a fixed-bed column: experiments and prediction of breakthrough curves

Content Provider	Springer Nature Link
Author	Zou, Weihua Zhao, Lei Zhu, Lu
Copyright Year	2012
Abstract	Adsorbent, natural grapefruit peel (GFP) exhibit good efficacy to adsorb a highly toxic radioactive heavy metal, uranium(VI). Through the fixed-bed column technique adsorption characteristics of uranium(VI) is observed at different flow rate, bed depth, influent uranium(VI) concentration and particle size of adsorbent. The results showed that adsorption reached saturation faster with increasing the flow rate and influent uranium(VI) concentration while it was the advantage of column adsorption with the increase in the GFP bed. The data were fitted to the Thomas model, the Yan model, the Clark model and the mass transfer model by nonlinear regressive analysis. When the flow rate was 8.0 mL min$^{−1}$ and the influent concentration of uranium(VI) was 90 mg L$^{−1}$, the maximum adsorption quantity reached 104.1 mg g$^{−1}$ according to the Thomas model. The bed depth service time model was applied to predict the service times with other flow rate and initial concentration. The theoretical breakthrough curve was compared with experimental breakthrough curve profile in the dynamic process. The results showed that the Yan model was better for the description of breakthrough curves at the experimental conditions than the Thomas and the Clark models. The saturated column was regenerated by 0.05 mol L$^{−1}$ hydrogen chloride solution and GFP could be reused in uranium(VI) removal.
Starting Page	717
Ending Page	727
Page Count	11
File Format	PDF
ISSN	02365731
Journal	Journal of Radioanalytical and Nuclear Chemistry
Volume Number	295
Issue Number	1
e-ISSN	15882780
Language	English
Publisher	Springer Netherlands
Publisher Date	2012-07-25
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Column adsorption Grapefruit peel Uranium(VI) Dynamic model Nuclear Chemistry Physical Chemistry Nuclear Physics, Heavy Ions, Hadrons Diagnostic Radiology Inorganic Chemistry
Content Type	Text
Resource Type	Article
Subject	Spectroscopy Pollution Health, Toxicology and Mutagenesis Radiology, Nuclear Medicine and Imaging Analytical Chemistry Public Health, Environmental and Occupational Health Nuclear Energy and Engineering

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