Environmental speciation of actinides

K Maher, JR Bargar, GE Brown Jr - Inorganic chemistry, 2013 - ACS Publications
Although minor in abundance in Earth's crust (U, 2–4 ppm; Th, 10–15 ppm) and in seawater
(U, 0.003 ppm; Th, 0.0007 ppm), light actinides (Th, Pa, U, Np, Pu, Am, and Cm) are …

Uranium bioremediation with U (VI)-reducing bacteria

W You, W Peng, Z Tian, M Zheng - Science of the Total Environment, 2021 - Elsevier
Uranium (U) pollution is an environmental hazard caused by the development of the nuclear
industry. Microbial reduction of hexavalent uranium (U (VI)) to tetravalent uranium (U (IV)) …

Highly efficient U (VI) capture by amidoxime/carbon nitride composites: Evidence of EXAFS and modeling

B Hu, H Wang, R Liu, M Qiu - Chemosphere, 2021 - Elsevier
The recovery of uranium from wastewater and safe treatment of U (VI)-containing
wastewater are of great important to ensure the sustainable development of nuclear-related …

Acetate availability and its influence on sustainable bioremediation of uranium-contaminated groundwater

KH Williams, PE Long, JA Davis, MJ Wilkins… - Geomicrobiology …, 2011 - Taylor & Francis
Field biostimulation experiments at the US Department of Energy's Integrated Field
Research Challenge (IFRC) site in Rifle, Colorado, have demonstrated that uranium …

Impact of uranyl− calcium− carbonato complexes on uranium (VI) adsorption to synthetic and natural sediments

BD Stewart, MA Mayes, S Fendorf - Environmental science & …, 2010 - ACS Publications
Adsorption on soil and sediment solids may decrease aqueous uranium concentrations and
limit its propensity for migration in natural and contaminated settings. Uranium adsorption …

Nitrate-stimulated release of naturally occurring sedimentary uranium

JP Westrop, P Yadav, PJ Nolan… - Environmental …, 2023 - ACS Publications
Groundwater uranium (U) concentrations have been measured above the US EPA
maximum contaminant level (30 μg/L) in many US aquifers, including in areas not …

Persistence of uranium groundwater plumes: contrasting mechanisms at two DOE sites in the groundwater–river interaction zone

JM Zachara, PE Long, J Bargar, JA Davis, P Fox… - Journal of contaminant …, 2013 - Elsevier
We examine subsurface uranium (U) plumes at two US Department of Energy sites that are
located near large river systems and are influenced by groundwater–river hydrologic …

Application of surface complexation modeling on adsorption of uranium at water-solid interface: A review

Y Sun, Y Li - Environmental Pollution, 2021 - Elsevier
Precise prediction of uranium adsorption at water-mineral interface is of great significance
for the safe disposal of radionuclides in geologic environments. Surface complexation …

Understanding and predicting vadose zone processes

B Arora, D Dwivedi, B Faybishenko… - … in Mineralogy and …, 2019 - pubs.geoscienceworld.org
The vadose zone (often called the unsaturated zone) is commonly defined as the geologic
media spanning from the land surface to the groundwater table of the first unconfined aquifer …

Geochemical, mineralogical and microbiological characteristics of sediment from a naturally reduced zone in a uranium-contaminated aquifer

KM Campbell, RK Kukkadapu, NP Qafoku… - Applied …, 2012 - Elsevier
Localized zones or lenses of naturally reduced sediments have the potential to play a
significant role in the fate and transport of redox-sensitive metals and metalloids in aquifers …