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Removal of Radium from Uranium Effluent by Manganese Oxide Coated Modified Bentonite (Mn-NaB)

Abdou A Abdou, Mohamed S Nagar, Reda A Ghazala


The results of radiometric analysis show the presence of high level concentration of 226Ra (50 to 125 Bq/L) in the uranium effluent solutions waste of Gattar uranium pilot plant Eastern Desert of Egypt. These levels are higher than the maximum permissible level of 226Ra (1.1Bq/L) which needs treatment. Normally treatment consists of lime addition to increase the pH to 8 which precipitates most contaminants except 226Ra. Adsorption process provides an alternative treatment in comparison with other removal techniques. The sorption of radium (226Ra) on different adsorbent, modified bentonite (Na-B) and a mixture of modified bentonite coated by Manganese oxide (Mn-NaB) was studied. The present study focuses at the option to improve the sorption properties of bentonite via its modification and presents the possibility to remove radium cations from the uranium effluent solutions by the usage of non-homogenous bentonite coated by manganese oxides. Experimental conditions (pH, clay materials quantity to manganese oxide, contact time and associated elements) were changed in order to determine the optimal state for adsorption of 226Ra. Column sorption of radium from uranium effluent solutions from Gattar pilot plant using (Mn-NaB) were conducted. The results showed that good adsorption capacity for radium removal in uranium influent. The capacity at breakthrough point 1.1 Bq/1 is 94.28Bq/g (Mn-NaB).

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- U.S. Environmental Protection Agency. Office of Drinking Water. Suggested Guidelines for Disposal of Drinking Water Treatment Wastes Containing Naturally Occurring Radionuclides. July 1990.

- N.W. Schidtke, D. Averill and D.N. Bryan, "Remove of 226Ra fromtailings pond. Proceedings of the seminar on management, stabilisation and environmental impact of uranium mill tailings", Albuquerque, USA, July, (1978).

- S. Cheng, J. LIU and K. YU, "Treatment of wastewater in tailings dam of a uranium mill by lime precipitation-air aeration", Uranium Mining & Metallurgy, 1983, 2(2), p. 52.

- S. Pandey, "A comprehensive review on recent developments in bentonite-based materials used as adsorbents for wastewater treatment", Journal of Molecular Liquids 241, 2017, pp. 1091-1113.

- S. Pandey and S. Tiwari, "Facile approach to synthesize chitosan based composite Characterization and cadmium(II) ion adsorption studies", Carbohydrate Polymers, 2015, 134, PP. 646-656.

- S. Pandey and J. Ramontja, "Recent modifications of bentonite clay for adsorption applications", Focus on Sciences, 2016, 2 (2), PP. 1-10. DOI: 10.21859/focsci-020455

- S. Pandey and J. Ramontja, "Natural Bentonite Clay and Its Composites for Dye Removal: Current State and Future Potential", American Journal of Chemistry and Applications, 2016, 3 (2), 8-19.

- J. Environment protection article (1), Environmental Office. Metallurgy industry, (1977).

- K.L. Martins and A.G. Myers, Controlling radionuclides in water treatment plants: removal, disposal, and exposure minimization. In Proc. of the AWWA Water Quality Technology Conference. New York, 1993, PP. 1077-1109.

- J.W. Jl, "Treatment of effluent from uranium mining. Remove the uranium and radium",

Nuclear energy publisher, (1982).

- L.A. Melis, "Radium Removal from Canadian Uranium Mining Ef-fluent by a Radium-Selective Ion Exchange Complexer," Metal-lurgical Society of CIM Bulletin, 1985, 78 (883), pp. 82-90.

- H.S. Posselt, F.J. Anderson and W.J. Weber, "Cation sorption on colloidal hydrous manganese dioxide", Environmental Science & Technology 2, 1968, 12, pp. 1087-1093, (1968). DOI: 10.1021/es60023a005

- R.M. Mckenzie, "Proton release during adsorption of heavy metals ions by a hydrous manganese dioxide", Geochimica et Cosmochimica Acta, 1979, 43, PP.1855-1857.

- L.S. Balistrieri and J.W. Murray, "The surface chemistry of δMnO2 in major ion sea water" Geochimica et Cosmochimica Acta, 1982, 46, PP.1041-1052.

- W. Zou, R. Han, Z. Chen, J. Shi and Liu, "Characterization and properties of manganese oxide coated zeolite as adsorbent for removal of copper(II) and lead(II) Ions from solution", Journal of Chemical & Engineering Data, 2006, 51, PP. 534-541.

DOI: 10.1021/je0504008

- J.G. Catts and D. Langmuir, "Adsorption of Cu, Pb, and Zn by dMnO2: applicability of the side binding-surface complexation model", Applied Geochemical, 1986, 1, PP. 255-264.

- G. Fu, H.E. Allen and C.E. Cowan, "Adsorption of cadmium and copper by manganese oxide", Soil Science, 1991, 152, PP. 72-81.

- H. Tamura, N. Katayama and R. Furrich, "The Co2+ adsorption properties of Al2O3, Fe2O3, Fe3O4, TiO2, and MnO2 evaluated by modeling with the Frumkin isotherm", Journal of Colloid Interface Science, 1997, 195, PP. 192-202.

- A. Birsen and A.D. Timothy, "Application of MnO2 coated scintillating and extractive scintillating resins to screening for radioactivity in groundwater", Nuclear Instruments and Methods in Physics Research Section A, 2003, 505, PP. 458-461.

- S.M. Maliyekkal, L. Philip and T. Pradeep, "As(III) removal from drinking water using manganese oxide-coated-alumina: performance evaluation and mechanistic details of surface binding", Chemical Engineering Journal, 2009, 153 (1-3), PP.101-107.

- Y. S. Al-degs , M. F. Tutunju and R. A. Shawabkeh , "The feasibility of using diatomite and Mn diatomite for remediation of Pb2+, Cu2+, and Cd2+ from water", Separation Science and Technology, 2000, 35, PP. 2299-2310.

- E. Eren, "Removal of copper ions by modified Unye clay, Turkey", Journal of Hazardous Materials, 2008, 159, PP. 235-244.

- E. Eren, B. Afsin and Y. Onal, "Removal of lead ions by acid activated and manganese oxide-coated bentonite", Journal of Hazardous Materials, 2009, 161, PP. 677-685.

- R. Han, W. Zou, Y. Wang and L. Zhu, L., "Removal of uranium(VI) from aqueous solutions by manganese oxide coated zeolite: discussion of adsorption isotherms and pH effect", Journal of Environmental Radioactivity, 2007, 93, PP. 127-143.

- S. Tomas, D. Silvia and M. Annamaria, "Characterization of Bentonite Modified by Manganese Oxides", Universal Journal of Geoscience, 2013, 1(2), PP. 114-119.

DOI: 10.13189/ujg.2013.010211

- R. T. Silvio and R. Jorge, "Removal of Mn2+ from aqueous solution by manganese oxide coated zeolite", Minerals Engineering, 2010, 23, PP. 1131-1138.

- L.B. William, R.J. Schliekelman, L.B. Dorothy, R.B. Charles and M.M. Ira, "Radium removal efficiencies in water treatment processes", Journal (American Water Works Association), 1978, 70 (1), pp. 31-35.

- radionuclidesremoval.pdf (accessed 08.12.2011).

- Radium Removal from Potable Water. Tonka Technical Bulletin. Tonka Equipment Company, Plymouth, Minnesota, USA, (2010).

- (accessed 08.12.2011).

- R.L. Valentine, R.C. Splinter, T.S. Mulholland, J.M. Baker, T.M. Nogaj and J. Horng, Project Summary: A Study of Possible Economical Ways of Removing Radium from Drinking Water: EPA/600/S2-88/009. US EPA, Washington, April (1988).

- W. Cole, A. Wadsley and A. Walkley, "An X-Ray Diffraction Study of Manganese Dioxide", Journal of the Electrochemical Society, 1947, 92 (1), PP. 133-158.

DOI: 10.1149/1.3071811

- R. Han, W. Zou, Z. Zhang, J. Shi and J. Yang, "Removal of copper(II) and lead(II) from aqueous solution by manganese oxide coated sand I. Characterization and kinetic study", Journal of Hazardous Materials B, 2006, 137, PP. 384-395.

DOI: 10.1016/j.jhazmat.2006.02.021

- J. Makovnikova, G. Barancikova, P. Dlapa and K. Dercova, "Inorganic contaminants in soil ecosystem", Chemické listy, 2006, 100 (6), PP. 424-432.


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