Removal of strontium from aqueous solutions using two unconventional biomass materials
- Hot Labs. and Waste Management Centre, Atomic Energy Authority, Cairo (Egypt)
It has been shown that two unconventional biomass sorbent materials, namely Bulinus truncatus and shrimp (prawn) shell particles, after ashing at 700 deg. C for 6 hours, can be used for the removal of strontium ions from aqueous solutions. Experimental work was carried out to evaluate and optimize the parameters affecting sorption (i.e. equilibration time, initial contamination concentration, sorbent weight, temperature, hydrogen ion concentration, and the addition of ethylene diamine tetra acetic acid (EDTA) as a complexing agent. Adsorption isotherms have shown that the adsorption data fit with the Freundlich model. Kinetic studies showed that the Lagergren equation is applicable. The results obtained revealed that the presence of a complexing agent, such as (EDTA) suppresses the sorption of strontium at all pH values. The suggested mechanism of strontium removal by the two sorbents used was mainly 'ion exchange', and at higher temperatures a specific interaction mechanism was operated with ion exchange. The kinetic studies showed low desorption values for strontium release from the leachant used. The investigated sorbents were of low cost and efficient in the removal of strontium from aqueous wastes. (authors)
- Research Organization:
- WM Symposia, 1628 E. Southern Avenue, Suite 9 - 332, Tempe, AZ 85282 (United States)
- OSTI ID:
- 21294626
- Report Number(s):
- INIS-US-09-WM-07040; TRN: US10V0030040816
- Resource Relation:
- Conference: WM'07: 2007 Waste Management Symposium - Global Accomplishments in Environmental and Radioactive Waste Management: Education and Opportunity for the Next Generation of Waste Management Professionals, Tucson, AZ (United States), 25 Feb - 1 Mar 2007; Other Information: Country of input: France; 13 refs
- Country of Publication:
- United States
- Language:
- English
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