عنوان مقاله [English]
نویسندگان [English]چکیده [English]
The effects of nano zero valent irons on remediation of pollutions from tailing ponds have been investigated in the current study. In order to achieve our goal, the liquid waste of yellow cake production facility was selected as a sample; because in addition to U (40 ppm), this liquid waste contains other elements such as Zn, Cu, Ni, Mn, Na, Ca, S, Si, Al, Mg, P, Cl, Fe and Sr. At first, Lime (C=30%) was used to reduce the concentration of uranium, and lime resulted from concentration of uranium to 0.3 ppm. Finally, we employed uranium concentration as well as NZVI remediated to about 4ppb. The results of these experiments show that at low concentrations of uranium (<5ppm), NZVI has a significant effect in remediation of uranium containing solutions.
1. A.B. Cundy, L. Hopkinson, R.L.D. Whitby. Use of iron-based technologies in contaminated land and groundwater, 400 (2008) 42-51.
2. R.A. Crane, T.B. Scott, Nanoscale zero valent iron: Future prospects for an emerging water treatment technology, Geochemica et Cosmochimica Acta, 72 (2012) 4047-4057.
3. D. O’Carrol, Nanoscale zero valent iron and bimetalics for contaminated site remediation, Procedia Environmental Sciences, 13 (2012) 1609-1615.
4. M. Dickinson, T.B. Scott, The application of zero-valent iron nanoparticles for the remediation of a uranium-contaminated waste effluent, Journal of Hazardous Materials, 178 (2011) 171-179.
5. M. Noubactep, A. Schner, Mechanism of uranium removal from the aqueous solution by elemental iron, Journal of Hazardous Materials, 223 (2006) 1363-1382.
6. Skipton, O. Sharon, Dvorak Bruce, Baumert Fred, Woldt Wayne, Drinking water: Uranium. University of Nebraska-Lincoln. G1569 (2008).
7. B. Gu, L. Liang, M.J. Dickey, X. Yin, S. Dai, Reductive Precipitation of Uranium (VI) by Zero-Valent Iron, Environ. Sci. Technol. 32 (1998) 3366-3373.
8. R.A. Crane, M. Dickinson, Magnetite and zero-valent iron nanoparticles for the remediation of uranium contaminated environmental water, Water Research, 45 (2011) 2931-2942.