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Efficiency of barium removal from radioactive waste water using the combination of maghemite and titania nanoparticles in PVA and alginate beads

Majidnia, Zohreh and Idris, Ani and Abd. Majid, Muhd. Zaimi and Mohd. Zin, Rosli (2015) Efficiency of barium removal from radioactive waste water using the combination of maghemite and titania nanoparticles in PVA and alginate beads. Applied Radiation And Isotopes, 105 . pp. 105-113. ISSN 0969-6989

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Official URL: http://dx.doi.org/10.1016/j.apradiso.2015.06.028

Abstract

In this paper, both maghemite (?-Fe2O3) and titanium oxide (TiO2) nanoparticles were synthesized and mixed in various ratios and embedded in PVA and alginate beads. Batch sorption experiments were applied for removal of barium ions from aqueous solution under sunlight using the beads. The process has been investigated as a function of pH, contact time, temperature, initial barium ion concentration and TiO2:?-Fe2O3ratios (1:10, 1:60 and 1). The recycling attributes of these beads were also considered. Furthermore, the results revealed that 99% of the Ba(II) was eliminated in 150min at pH 8 under sunlight. Also, the maghemite and titania PVA-alginate beads can be readily isolated from the aqueous solution after the process and reused for at least 7 times without significant losses of their initial properties. The reduction of Ba(II) with maghemite and titania PVA-alginate beads fitted the pseudo first order and second order Langmuir-Hinshelwood (L-H) kinetic model.

Item Type:Article
Uncontrolled Keywords:barium ions, maghemite nanoparticles, photocatalysts
Subjects:A General Works
ID Code:58445
Deposited By: Haliza Zainal
Deposited On:04 Dec 2016 12:07
Last Modified:31 May 2017 10:35

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