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http://dx.doi.org/10.4491/KSEE.2014.36.11.747

Study on Removal of Artificial Radionuclide (I-131) in Water  

Jeong, Gwanjo (Waterworks Research Institute, Seoul Metropolitan Government)
Lee, Kyungwoo (Waterworks Research Institute, Seoul Metropolitan Government)
Kim, Bogsoon (Waterworks Research Institute, Seoul Metropolitan Government)
Lee, Suwon (Waterworks Research Institute, Seoul Metropolitan Government)
Lee, Jonggyu (Waterworks Research Institute, Seoul Metropolitan Government)
Koo, Ami (Waterworks Research Institute, Seoul Metropolitan Government)
Publication Information
Journal of Korean Society of Environmental Engineers / v.36, no.11, 2014 , pp. 747-752 More about this Journal
Abstract
Iodine-131, an artificial radionuclide, mostly exists as iodide ion ($^{131}I^-$) and iodate ion ($^{131}IO_3{^-}$) in the water, and When a short time contacted, it could not be removed by poly aluminum chloride (PACl) and powdered activated carbon (PAC). Although the removal rate of iodine-131 was not related with turbidity of raw water, it showed linear relationship with contact time with PAC. With the mixture of PACl (24 mg/L or more) and PAC (40 mg/L or more), about 40% of iodine-131 could be removed. Iodine-131 could be removed little by sand filtration, but approximately 100% by granular activated carbon (GAC), both virgin-GAC and spent-GAC. Microfiltration process could remove little iodine-131 while reverse osmosis process could remove about 92% of iodine-131.
Keywords
Iodine-131(I-131); Radionuclide; Granular Activated Carbon (GAC);
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