The remediation of sand contaminated with 153Gd has been investigated using natural organic substances extracted from fallen cherry leaves instead of artificial reagents. The initial fulvic and humic acid isolated from organic substances through acidic and basic treatments have a concentration of total organic carbon of 4500 mgC/L and 3340 mgC/L, and the capacities of their functional groups are 7.23 meq/gC and 2.76 meq/gC, respectively. The remediation capacity of both fulvic and humic acid is effective in the weakly acidic region. Remediation with a natural organic substance requires a much higher carbon concentration than EDTA owing to its weak complexation with metal ions. In comparison with the EDTA complexation constant, the experimental complexation constant (log β) of gadolinium with a natural organic substance at pH 5.5 was determined to be 10 at most.
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ASME 2010 13th International Conference on Environmental Remediation and Radioactive Waste Management
October 3–7, 2010
Tsukuba, Japan
Conference Sponsors:
- Nuclear Engineering Division and Environmental Engineering Division
ISBN:
978-0-7918-5453-2
PROCEEDINGS PAPER
Remediation of 153Gd-Contaminated Sand by Fulvic and Humic Materials Extracted From Fallen Cherry Leaves Available to Purchase
Takumi Kubota
Takumi Kubota
Kyoto University Research Reactor Institute, Kumatori, Osaka, Japan
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Takumi Kubota
Kyoto University Research Reactor Institute, Kumatori, Osaka, Japan
Paper No:
ICEM2010-40122, pp. 559-563; 5 pages
Published Online:
April 5, 2011
Citation
Kubota, T. "Remediation of 153Gd-Contaminated Sand by Fulvic and Humic Materials Extracted From Fallen Cherry Leaves." Proceedings of the ASME 2010 13th International Conference on Environmental Remediation and Radioactive Waste Management. ASME 2010 13th International Conference on Environmental Remediation and Radioactive Waste Management, Volume 2. Tsukuba, Japan. October 3–7, 2010. pp. 559-563. ASME. https://doi.org/10.1115/ICEM2010-40122
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