Removal of137Cs from an intermediate level liquid waste by using various ion-exchange media
| Autor: | A. N. Pandey, Pradeep Kumar Sinha, R. Shankar, P. M. Satyasai, Santanu Bera, A. Jaleel, S.V. Narasimhan, R. Muthiah |
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| Rok vydání: | 1999 |
| Předmět: |
Ion exchange
Chemistry Health Toxicology and Mutagenesis Inorganic chemistry Composite number Public Health Environmental and Occupational Health Human decontamination Pollution Analytical Chemistry Nuclear Energy and Engineering X-ray photoelectron spectroscopy Tap water Radiology Nuclear Medicine and imaging Leaching (metallurgy) Zeolite Ion-exchange resin Spectroscopy Nuclear chemistry |
| Zdroj: | Journal of Radioanalytical and Nuclear Chemistry. 242:341-348 |
| ISSN: | 1588-2780 0236-5731 |
| DOI: | 10.1007/bf02345562 |
| Popis: | An intermediate level liquid waste (ILLW or Category III waste) stream was treated for the removal of radioactive Cs in pilot scale experiments, using three different ion exchange media. Results indicated that the polyacrylic fibre coated with cupric ferric hexacyanoferrate (CuFeHCF-fibre composite) was the most efficient, followed by cupric hexacyanoferrate loaded ion exchange resin (CuHCF-resin) and mixed zeolites (AR-1, 4A and 13X in the ratio 6:1:1). The mixed zeolites column and the CuFeHCF-fibre column were used in series in order to get a high total decontamination factor (DF). Leaching studies on the CuFeHCF-fibre composite loaded with137Cs, in demineralised (DM) water, tap water and ground water media indicated a release of about 19.3%, 25.5% and 41.3% of137Cs, respectively, in a period of about 8 months. XPS studies with CuFeHCF-fibre composite indicated some chemical interaction between the CuFeHCF precipitate and the polyacrylic fibre. Some of the possible disposal options for the CuFeHCF-fibre composite have also been discussed. |
| Databáze: | OpenAIRE |
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