Characterization of uranium contaminated soils from DOE Fernald Environmental Management Project Site: Results of Phase 1 characterization

Technical Report · Wed Jan 01 00:00:00 EST 1992

DOI:https://doi.org/10.2172/10119486· OSTI ID:10119486

Lee, S Y; Marsh, Jr, J D

The Integrated Demonstration (ID) for remediation of uranium- contaminated soils has been established by the DOE Office of Technology Development. The Fernald (Feed Materials Production Center) site was selected as the DOE facility for the field demonstration. The principle objective of this ID is to evaluate and compare the versatility, efficiency, and economics of various technologies that may be combined into systems for the removal of uranium from contaminated soils. Several leaching solutions were employed to determine their effectiveness in extracting uranium from the soil. The extractants and their means of preparation were: 0.1 N nitric acid [HNO{sub 3}]: 6.25 mL of concentrated nitric acid was diluted to 1 L with distilled water; 2% ammonium carbonate [(NH{sub 4}){sub 2}CO{sub 3}]: 20 g of (NH{sub 4}){sub 2}CO{sub 3} was dissolved in distilled water and diluted to 1 L; 5% sodium hypochlorite (NaOCl): 50 mL of NaOCl reagent (Cl < 6%) was diluted to 1 L with distilled water; 0.1 M ethylenediaminetetraacetric acid, disodium salt (EDTA): 37.224 g EDTA was dissolved in distilled water and diluted to 1 L; 2% citric acid monohydrate solution (H{sub 3}C{sub 6}H{sub 5}O{sub 7}{center_dot}H{sub 2}O): 20 g of critic acid was diluted to 1 L with distilled water; 0.1 M hydroxylamine-hydrochloride (NH{sub 2}OH{center_dot}HCl) in 0.01 N nitric acid: 6.95 g (NH{sub 2}OH{center_dot}HCl) was dissolved and diluted to 1 L with 0.01 N HNO{sub 3}. The 0.01 N nitric acid was prepared by diluting 3 mL concentrated nitric acid to 5 L with distilled water; and the sodium citrate-bicarbonate-dithionite (CBD) method: 0.3 M sodium citrate (88 g tribasic sodium citrate, Na{sub 3}C{sub 6}H{sub 5}O{sub 7}{center_dot}2H{sub 2}O, per liter); 1 M sodium bicarbonate (84 g NaHCO{sub 3} per liter); and 5 g sodium dithionite, Na{sub 2}S{sub 2}O{sub 4}.

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: AC05-84OR21400
• OSTI ID: 10119486
• Report Number(s): ORNL/TM-11980; ON: DE92007403
• Resource Relation: Other Information: DN: Environmental Sciences Division Publication No. 3786; PBD: Jan 1992
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
SOILS
DECONTAMINATION
URANIUM
EXTRACTION
FEED MATERIALS PRODUCTION CENTER
DEMONSTRATION PROGRAMS
COMPARATIVE EVALUATIONS
EDTA
RADIOECOLOGICAL CONCENTRATION
NITRIC ACID
AMMONIUM CARBONATES
SODIUM COMPOUNDS
CITRIC ACID
AMINES
HYDROCHLORIC ACID
CITRATES
MINERALS
PARTICLE SIZE
540250
540230
400105
054000
SITE RESOURCE AND USE STUDIES
RADIOACTIVE MATERIALS MONITORING AND TRANSPORT
SEPARATION PROCEDURES
HEALTH AND SAFETY