Separation of {sup 60}Co from a low-active evaporator concentrate using ultrafiltration, precipitation, polyelectrolytes, ion exchange and activated carbon
- Univ. of Helsinki (Finland)
Removal of {sup 60}Co from a highly alkaline low-active evaporator concentrate solution was studied. Ultra-filtration with a 2-3 nm membrane showed a cobalt removal of about 14%. Precipitation with Co{sup 2+}, CO{sub 3}{sup -2}, Fe{sup 3+}, Fe(CN){sub 6}{sup -4} and S{sup -2} removed 4-89% of {sup 60}Co at pH 11.5; the highest removal was obtained with sulphide. Of the polyelectrolytes tested only cationic species showed slight removal with flocculation, varying in the range of 10-13.5%. Several chelating organic ion exchange resins, inorganic ion exchangers and activated carbons were also tested. Most of these did not remove any cobalt. The most effective chelating resin was Imac GT 73 which removed 17% of cobalt. The highest uptake obtained with inorganic exchangers (modified phlogopite mineral and manganese sulphide) was 11-13%. The cobalt adsorptions on activated carbons varied in the very wide range of 7-77%.
- Research Organization:
- Univ. of Arizona, Tucson, AZ (United States). Coll. of Engineering and Mines; New Mexico State Univ., Las Cruces, NM (United States); Waste-Management Education and Research Consortium (WERC), Las Cruces, NM (United States); US Department of Energy (USDOE), Washington DC (United States)
- OSTI ID:
- 121029
- Report Number(s):
- CONF-940225-Vol.2; TRN: 95:007146-0007
- Resource Relation:
- Conference: Waste management `94: working towards a cleaner environment, Tucson, AZ (United States), 27 Feb - 3 Mar 1994; Other Information: PBD: 1994; Related Information: Is Part Of Technology and programs for Radioactive Waste Management and Environmental Restoration. Volume 2; Post, R.G. [ed.] [Arizona Univ., Tucson, AZ (United States). College of Engineering and Mines]; PB: 750 p.
- Country of Publication:
- United States
- Language:
- English
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