NDLI: Removal of environmental level of $^{239+240}$Pu and $^{241}$Am from groundwater by using humic coated colloidal suspension of goethite (α-FeO(OH))

Content Provider	Springer Nature Link
Author	Singhal, R. K. Basu, H. Reddy, A. V. R.
Copyright Year	2012
Abstract	In case of natural catastrophic nuclear accident scenario like Daiichi Nuclear Power Plant (NPP) Fukushima, Japan (11 March 2011) and industrial nuclear accidents like Chernobyl, USSR (March 1986), thousands of curies of activity goes in the public domain and contaminate the drinking water system in the area around the accidental zone. In view of this there is a need to evolve methodology for decontamination of the drinking water without compromising the drinking water quality. During this work humic coated colloidal suspension of geothite(α-FeO(OH)) followed by ultrafiltration were used to decontaminate the water having $^{239+240}$Pu and $^{241}$Am in the concentration range of 10–100 Bq L$^{−1}$. Polydispersive colloids of goethite were generated by controlled oxidation of FeSO$_{4}$ in the presence of NaOH. Size characterization, morphology and elemental profiling of goethite suspension and their aggregation with increase in the concentration of humic acid was studied by using dynamic light scattering and scanning electron microscope hyphenated with energy dispersive spectrometry. Experimental results clearly indicate preferential association of Pu and Am with goethite suspension dominated with 30 nm colloids. The impact of humus material on selectivity of Pu and Am by goethite was studied in the concentration range of 10–100 μg mL$^{−1}$ of humic acid. This selectivity is further enhanced linearly with the increase in concentration humic acid from 10 to 60 μg mL$^{−1}$ and thereafter it remains constant. Goethite suspension having a coating of 60 μg mL$^{−1}$ of humic acid was successfully utilized to decontaminate the water. Goethite suspension was separated from the groundwater using Ultra filtration cell with membrane having 500 NMWL (nominal molecular weight limit).
Starting Page	1345
Ending Page	1351
Page Count	7
File Format	PDF
ISSN	02365731
Journal	Journal of Radioanalytical and Nuclear Chemistry
Volume Number	295
Issue Number	2
e-ISSN	15882780
Language	English
Publisher	Springer Netherlands
Publisher Date	2012-07-14
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Drinking water Goethite Pu$^{23+240}$ Am$^{241}$ Humic acid Nuclear accident Nuclear Chemistry Physical Chemistry Nuclear Physics, Heavy Ions, Hadrons Diagnostic Radiology Inorganic Chemistry
Content Type	Text
Resource Type	Article
Subject	Spectroscopy Pollution Health, Toxicology and Mutagenesis Radiology, Nuclear Medicine and Imaging Analytical Chemistry Public Health, Environmental and Occupational Health Nuclear Energy and Engineering

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