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Iranian Journal of Environmental Health, Science and Engineering
Iranian Association of Environmental Health (IAEH)
ISSN: p-ISSN: 1735-1979
Vol. 8, No. 1, 2011, pp. 65-74
Bioline Code: se11008
Full paper language: Chinese
Document type: Research Article
Document available free of charge

Iranian Journal of Environmental Health, Science and Engineering, Vol. 8, No. 1, 2011, pp. 65-74

 en Biosorption Of Uranium In A Continuous Flow Packed Bed Column Using Cystoseira indica check for this species in other resources Biomass
Ghasemi, M.; Keshtkar, A.R.; Dabbagh, R. & Safdari, Jaber

Abstract

Uranium(II) biosorption from aqueous solution by Cystoseira indica check for this species in other resources biomass was studied in a packed bed column. The uptake capacity of uranium was investigated by natural and different pretreated biomasses. Results showed 0.1 M CaCl2 solution at pH=4, used as pretreatment, increased the uptake capacity more than 30% (371.39 mg/g). Cations concentration measurement in the effluent solution, Fourier transform infrared spectroscopy and X-ray fluorescence analyses on biosorbents proved that ion exchange is the main biosorption mechanism. The elution efficiency for uranium desorption was determined for various chemical agents in a batch system. Among these eluants, 0.1 M HCl exhibited elution efficiency greater than 78%. Also, biomass regeneration by 0.1 M HCl was studied in a continuous system. The obtained results confirmed that reusability of this biomass is conceivable. Thus, Cystoseira indica can be used in the packed bed column as a potential biosorbent for treatment of uranium polluted aqueous solutions.

Keywords
Biosorption; Uranium; Packed bed column; Cystoseira indica; Ion exchange

 
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