Back
 GEP  Vol.6 No.11 , November 2018
Thermodynamic Modeling of Uranium (VI) Reductive Immobilization in Groundwater of NPCC Sludge Storages (Novosibirsk, Russia)
Abstract:
The Biochemical Reduction Of Both Nitrate And Sulfate In U-Containing Aquifers Of The Novosibirsk Plant Of Chemical Concentrates (NPCC) Was Investigated Experimentally And Thermodynamically. It Was Observed That Decrease In Eh Up To -397 Mv Has A Distinct Effect On The Denitrification And Uranium Precipitation As UO2(S). Nitrate Was Denitrified With A Temporary Accumulation Of The Intermediate Nitrite On The Day 4th. According To The X-Ray Fluorescence Analysis And Thermodynamic Calculations, More Than Half Of The Uranium Is Deposited In The First Stage As UO2+X oxides, And The Rest, Together With The Sulfides In The Reducing Environment. Findings Suggest That Accurately Thermodynamic Predicting Of Groundwater NO3-;  And SO42- Fate Is Primarily Limited By Failing To Account For A Kinetic Of Redox Fluctuations In The Experiment: 1) Measured Eh +190 Mv Is Low Despite The High Amount Of Nitrates (1124 Mg/L), But NH4+ Predominates In Solution According To Calculations, 2) Sulfate Reduction Lagged Behind Nitrate Reduction By Approximately 50 Days Unlike Model Simulation.
Cite this paper: Gaskova, O. , Boguslavsky, A. , Safonov, A. , (2018) Thermodynamic Modeling of Uranium (VI) Reductive Immobilization in Groundwater of NPCC Sludge Storages (Novosibirsk, Russia). Journal of Geoscience and Environment Protection, 6, 181-189. doi: 10.4236/gep.2018.611014.
References

[1]   Abdelouas, A., Lutze, W., & Nuttall, H. E. (1998). Chemical Reduction of Uranium in Groundwater at a Mill Tailings Site. Journal of Contaminant Hydrology, 34, 343-361.

[2]   Boguslavskii, A. E., Gas’kova, O. L., & Shemelina, O. V. (2016). Geochemical Model of the Environmental Impact of Low-Level Radioactive Sludge Repositories in the Course of Their Decommissioning. Radiochemistry, 58, 323-328. https://doi.org/10.1134/S1066362216030164

[3]   Carpenter, J., Bi Y., & Hayes, K. F. (2015). Influence of Iron Sulfides on Abiotic Oxidation of UO2 by Nitrite and Dissolved Oxygen in Natural Sediments. Environmental Science & Technology, 49, 1078-1085. https://pubs.acs.org/doi/10.1021/es504481n

[4]   Coby, A. J., & Picardal, F. W. (2005). Inhibition of and Reduction by Microbial Fe(III) Reduction: Evidence of a Reaction between and Cell Surface-Bound Fe2+. Applied and Environmental Microbiology, 71, 5267-5274. http://aem.asm.org/content/71/9/5267.full https://doi.org/10.1128/AEM.71.9.5267-5274.2005

[5]   Eschenbach, W., Well, R., & Walther, W. (2015). Predicting the Denitrification Capacity of Sandy Aquifers from in Situ Measurements Using Push-Pull 15N Tracer Tests. Biogeosciences, 12, 2327-2346. https://doi.org/10.5194/bg-12-2327-2015

[6]   Gaskova, O. L., Boguslavsky, A. E., & Shemelina, O. V. (2015). Uranium Release from Contaminated Sludge Materials and Uptake by Subsurface Sediments: Experimental Study and Thermodynamic Modeling. Applied Geochemistry, 55, 152-159. https://doi.org/10.1016/j.apgeochem.2014.12.018

[7]   Gaskova, O. L., Strakhovenko, V. D., Ermolaeva, N. I., Zarubina, E. Yu., & Ovdina, Е. А. (2017). A Simple Method to Model the Reduced Environment of Lake Bottom Sapropel Formation. Chinese Journal of Oceanology and Limnology (CJOL), 35, 956-966. https://doi.org/10.1007/s00343-017-5345-9

[8]   Hallbeck, L., & Pedersen, K. (2012). Culture-Dependent Comparison of Microbial Diversity in Deep Granitic Groundwater from Two Sites Considered for a Swedish Final Repository of Spent Nu-clear Fuel. FEMS Microbiology Ecology, 81, 66-77. https://doi.org/10.1111/j.1574-6941.2011.01281.x

[9]   Keith-Roach, M. J., & Livens, F. R. (2002). Interactions of Microorganisms with Radionuclides. Elservier, Amsterdam, New York, 408 p. https://trove.nla.gov.au/version/44951714

[10]   Londry, K. L., & Suflita, J. M. (1999). Use of Nitrate to Control Sulfide Generation by Sulfate-Reducing Bacteria Associated with Oily Waste. Journal of Industrial Microbiology and Biotechnology, 22, 582-589. https://doi.org/10.1038/sj.jim.2900668

[11]   Nordstrom, D. K. (2000). Aqueous Redox Chemistry and the Behavior of Iron in Acid Mine Waters (естьвпапкеСанья). https://water.usgs.gov/nrp/proj.bib/Publications/2002/nordstrom_epa.pdf

[12]   Safonov, A. V., Boguslavskii, А. Е., Boldyrev, K. A., & Zayceva, L. V. (2019). Biogenic Factors of Geochemical Uranium Anomalies Formation in Subsurface Waters Near to Novosibirsk Chemical Concentrates Plant Slurry Storage. Geochemistry International, 57, in press.

[13]   Shvarov, Yu. V. (2008). HCh: New Potentialities for the Thermodynamic Simulation of Geochemical Systems Offered by Windows. Geochemistry International, 46, 834-839.

[14]   Stucker, V. K., Kenneth, D. R., Williams, H., Sharp, J. O., & Ranville, J. F. (2014). Thioarsenic Species Associated with Increased Arsenic Release during Biostimulated Subsurface Sulfate Reduction. Environmental Science & Technology, 48, 13367-13375. https://doi.org/10.1021/es5035206

[15]   Wang, S., Radny, D., Huang, S., Zhuang, L., Zhao, S., Berg, M., Jetten, M. S. M., & Zhu, G. (2016) Nitrogen Loss by Anaerobic Ammonium Oxidation in Unconfined Aquifer Soils. Scientific Reports, 7, 40173. https://doi.org/10.1038/srep40173

[16]   Yi, Z.-J., Tan, K.-X., Tan, A.-L., Yu, Z.-X., & Wan, S-Q. (2007) Influence of Environmental Factors on Reductive Bioprecipitation of Uranium by Sulfate Reducing Bacteria. International Biodeterioration & Biodegradation, 60, 258-266. https://doi.org/10.1016/j.ibiod.2007.04.001

 
 
Top