Calcium alginate and chitosan as potential sorbents for strontium radionuclide
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This work reports the adsorption of strontium(II) from aqueous solutions onto calcium alginate (CA) and chitosan (CH) materials. The adsorption process was studied in batch experiments as a function of the pH of the solution, contact time, and temperature. Freundlich isotherm was found to describe the sorption process comparatively well as the Langmuir model. Laboratory obtained spherical beads of CA seems to be a better sorbent than commercially available materials. A contact time of about 4 h and neutral pH of the initial aqueous solution seem to be optimal conditions for Sr-85 to be removed from contaminated solutions using alginate beads.
KeywordsWater treatment Calcium alginate Chitosan Strontium-85 Adsorption Isotherm
This research has been financed from the National Centre for Research and Development (Poland) through the Strategic Program "Technologies Supporting Development of Safe Nuclear Power Engineering", task 4 "Development of spent nuclear fuel and radioactive waste management techniques and technologies".
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