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Open AccessArticle

Uranium Removal from Groundwater by Permeable Reactive Barrier with Zero-Valent Iron and Organic Carbon Mixtures: Laboratory and Field Studies

1
National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”, 37 Peremogy Av., 03056 Kyiv, Ukraine
2
US Environmental Protection Agency—Granite Ridge Groundwater, Boulder, CO 80305, USA
3
Istituto di Geologia Ambientale e Geoingegneria, CNR, Area della Ricerca di Roma RM 1—Montelibretti-Via Salaria Km 29,300—Monterotondo Stazione, 00015 Roma, Italy
4
Ukrainian Scientific Research and Design Institute for Industrial Technology, Ministry of Energy and Coal Industry of Ukraine, 37 Petrovsky Str., 52220 Zhovty Vody, Dnipropetrovsk Region, Ukraine
5
US Environmental Protection Agency: Currently US Fish and Wildlife Service, Department of the Interior, 134 Union Blvd, Lakewood, CO 80228, USA
6
Institute for Sorption and Problems of Endoecology, National Academy of Science of Ukraine, 13 General Naumov Str., 03164 Kyiv, Ukraine
*
Author to whom correspondence should be addressed.
Metals 2018, 8(6), 408; https://doi.org/10.3390/met8060408
Received: 31 March 2018 / Revised: 22 May 2018 / Accepted: 24 May 2018 / Published: 1 June 2018
(This article belongs to the Special Issue Leaching Kinetics of Valuable Metals)
Zhovty Vody city, located in south-central Ukraine, has long been an important center for the Ukrainian uranium and iron industries. Uranium and iron mining and processing activities during the Cold War resulted in poorly managed sources of radionuclides and heavy metals. Widespread groundwater and surface water contamination has occurred, which creates a significant risk to drinking water supplies. Hydrogeologic and geochemical conditions near large uranium mine tailings storage facility (TSF) were characterized to provide data to locate, design and install a permeable reactive barrier (PRB) to treat groundwater contaminated by leachate infiltrating from the TSF. The effectiveness of three different permeable reactive materials was investigated: zero-valent iron (ZVI) for reduction, sorption, and precipitation of redox-sensitive oxyanions; phosphate material to transform dissolved metals to less soluble phases; and organic carbon substrates to promote bioremediation processes. Batch and column experiments with Zhovty Vody site groundwater were conducted to evaluate reactivity of the materials. Reaction rates, residence time and comparison with site-specific clean-up standards were determined. Results of the study demonstrate the effectiveness of the use of the PRB for ground water protection near uranium mine TSF. The greatest decrease was obtained using ZVI-based reactive media and the combined media of ZVI/phosphate/organic carbon combinations. View Full-Text
Keywords: uranium; contaminated groundwater; permeable reactive barrier; zero-valent iron uranium; contaminated groundwater; permeable reactive barrier; zero-valent iron
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MDPI and ACS Style

Kornilovych, B.; Wireman, M.; Ubaldini, S.; Guglietta, D.; Koshik, Y.; Caruso, B.; Kovalchuk, I. Uranium Removal from Groundwater by Permeable Reactive Barrier with Zero-Valent Iron and Organic Carbon Mixtures: Laboratory and Field Studies. Metals 2018, 8, 408.

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