A Novel Process for Extraction of Uranium from Monazite of Red Sediment Using Activated Carbon of Waste Tyres Source
- 2 Downloads
Monazite of red sediments source was digested with sulphuric acid, and the grey paste was dissolved in water. After separating the rare earths, aqueous solution bearing uranium and thorium was contacted with activated carbon produced from waste tyres through pyrolysis to adsorb uranium selectively. The process is unique as dilute feed solution containing very low concentration of uranium could be concentrated through activated carbon bed. Eluted uranyl nitrate solution was subsequently precipitated as ammonium diuranate in its pure state. The process can be an alternative to the existing solvent extraction process and can be efficiently used to concentrate uranium present in dilute leach solutions as well as in effluents and contaminated water. More research aimed at process optimisation is needed to utilise waste tyres as a source of activated carbon on industrial scale for concentrating valuable uranium which otherwise is difficult to extract by other known methods.
KeywordsMonazite Leaching Red sediments Uranium Thorium Uranyl nitrate Ammonium diuranate
The authors are thankful to Director CSIR-IMMT, Bhubaneswar, and Department of Atomic energy for extending facilities to carry out the work.
- 5.N. Kumari, D.R. Prabhu, P.N. Pathak, A.S. Kanekar, V.K.J. Manchanda, Extraction studies of uranium into a third-phase pf thorium nitrate employing tributyl phosphate and N,N-dihexyl octanamide as extractants in different diluents. J. Radioanal. Nucl. Chem. 289(3), 835–843 (2011)CrossRefGoogle Scholar
- 7.C. Cojocaru, G. Zakrzewska-Trznadel, A. Miskievicz, Removal of cobalt ions from aqueous solutions by polymer assisted ultrafiltration using experimental design approach, part 2: optimization by hydrodynamic conditions for a cross-flow ultrafiltration module with rotating part. J. Hazard. Mater. 169, 610–620 (2009)CrossRefGoogle Scholar
- 12.F. Habashi, Hand Book of Extractive Metallurgy (Wiley, Hoboken, 1997), pp. 1649–1684Google Scholar
- 14.A.S. Silva, E.R.E. Almendra, T. Ogasawara, M.C. Andrade, Lixiviaçosulfrica da monazitaem autoclave: anlisetermodinâmica. Anais do III Encontro de Metalurgia, Mineraço eMateriais. UFMG, Belo Horizonte/MG, Brasil 1, 223–234 (1995)Google Scholar
- 15.C.K. Gupta, N. Krishnamurthy, Extractive metallurgy of rare earths. Int. Mater. Rev. 5(37), 204–207 (1992)Google Scholar
- 16.V.V. Gupta, V.S. Keni, S.K. Ghosh, Thorium purification by solvent extraction, in Symposium on Solvent Extraction of Metals, Bombay, India (1979), pp. 1–2Google Scholar
- 21.V.K. Jhaand, K. Subedi, Preparation of activated charcoal adsorbent from waste tire. J. Nepal Chem. Soc. 27, 19–26 (2011)Google Scholar
- 24.V.K. Jhaand, K. Subedi, Preparation of activated charcoal adsorbent from waste tire. J. Nepal Chem. Soc. 27, 19–26 (2011)Google Scholar
- 27.T. Laxmi, R. Bhima Rao, Bad land topography of coastal belt sediment deposits of india: a potential resource for industrial minerals. Mines Miner. Rep. 3(7), 12–18 (2010)Google Scholar
- 28.S. Routray, R. Bhima Rao, Beneficiation and characterization of detrital zircons from beach sand and red sediments in India. J. Miner. Mater. Charact. Eng. 10(15), 1409–1428 (2011)Google Scholar