Kinetic Desorption and Sorption of U(VI) during Reactive Transport in a Contaminated Hanford Sediment

• Published in: Environmental science & technology Vol. 39; no. 9; pp. 3157 - 3165
• Main Authors: Qafoku, Nikolla P, Zachara, John M, Liu, Chongxuan, Gassman, Paul L, Qafoku, Odeta S, Smith, Steven C
• Format: Journal Article
• Language: English
• Published: Washington, DC American Chemical Society 01.05.2005
• Subjects: Applied sciences; AQUIFERS; Biological and physicochemical properties of pollutants. Interaction in the soil; Carbonates - chemistry; CLAYS; Contaminated sediments; DESORPTION; Earth sciences; Earth, ocean, space; Engineering and environment geology. Geothermics; Environmental science; ENVIRONMENTAL SCIENCES; Exact sciences and technology; FLOW RATE; Freshwater; Geologic Sediments - chemistry; Hazardous Waste; KINETICS; LEACHING; MINERALOGY; Models, Theoretical; MONTMORILLONITE; MUSCOVITE; Pollution; Pollution, environment geology; SEDIMENTS; Silicon Dioxide; Soil and sediments pollution; Soil Pollutants, Radioactive - analysis; SORPTION; TRANSPORT; Uranium; Uranium - analysis; Uranium - chemistry; VERMICULITE; United States; North America; Washington; America; United States > US; Hanford Washington; USA, Washington, Hanford Site; Radioactive pollution; Sand; Pollutant behavior; Mobility; Desorption; Sediments; Modeling; Aquifer system; Unsaturated zone; Adsorption; Limiting factor; Uranium VI; Water pollution; Kinetics; Ground water

Column experiments were conducted to investigate U(VI) desorption and sorption kinetics in a sand-textured, U(VI)-contaminated (22.7 μmol kg-1) capillary fringe sediment from the U.S. Department of Energy (DOE) Hanford site. Saturated column experiments were performed under mildly alkaline condition...