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Characterization of dry tube location in KAMINI reactor towards the development of k0-based IM-NAA |
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| Authors: | Chand Manish Brahmaji Rao J S Ashok Kumar G V S Kumar R |
| Institution: | 1.Life Science and Engineering College, Southwest University of Science and Technology, Mianyang, 621010, People’s Republic of China ;2.Key Laboratory of Solid Waste Treatment and Resource Recycle, Ministry of Education of China, Mianyang, 621010, People’s Republic of China ;3.Fundamental Science on Nuclear Wastes and Environmental Safety Laboratory, Southwest University of Science and Technology, Mianyang, 621010, People’s Republic of China ; |
| Abstract: | Polycarboxylic acid acts as hole scavenger and chelating agent, which is essential for the photocatalytic removal of multivalent metal ions. The photocatalytic uranium removal, role of chelating hole scavenger citric acid (CA), and removal mechanism were investigated in a TiO2 suspension system. The results show that chelating agent CA is an efficient hole scavenger. The maximum removal efficiency of U(VI) reaches up to 98.6%. The uranium-bearing precipitates contains Na(UO2)(Cit)], UO2, or UO4·2H2O. The mechanisms for the photocatalytic removal of U(VI) and the role of CA are discussed. These results suggest that proper chelating hole scavengers can promote and regulate the photocatalytic removal of multivalent metal ions. |
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