title: Review of soluble uranium removal by nanoscale zero valent iron.
abstract: Uranium (U) has been released to surface soil and groundwater through military and industrial activities. Soluble forms of U transferred to drinking water sources and food supplements can potentially threaten humans and the biosphere due to its chemical toxicity and radioactivity. The immobilization of aqueous U onto iron-based minerals is one of the most vital geochemical processes controlling the transport of U. As a consequence, much research has been focused on the use of iron-based materials for the treatment of U contaminated waters. One material currently being tested is nanoscale zero-valent iron (nZVI). However, understanding the removal mechanism of U onto nZVI is crucial to develop new technologies for contaminated water resources. This review article aims to provide information on the removal mechanism of U onto nZVI under different conditions (pH, U concentration, solution ion strength, humic acid, presence of O2and CO2, microorganism effect) pertinent to environmental and engineered systems, and to provide risk or performance assessment results with the stability of nZVI products after removal of U in environmental restoration.
authors.affiliation: School of Environmental Studies, China University of Geosciences, 388 Lumo Road, Wuhan, Hubei 430074, China; Nuclear Engineering Teaching Lab, University of Texas at Austin, 10100 Burnet Road, Austin, TX 78712, USA.
authors.forename: C
authors.initials: C
authors.lastname: Jing
authors.affiliation: School of Environmental Studies, China University of Geosciences, 388 Lumo Road, Wuhan, Hubei 430074, China.
authors.forename: Y L
authors.initials: YL
authors.lastname: Li
authors.affiliation: Nuclear Engineering Teaching Lab, University of Texas at Austin, 10100 Burnet Road, Austin, TX 78712, USA. Electronic address: s.landsberger@mail.utexas.edu.
authors.forename: S
authors.initials: S
authors.lastname: Landsberger
mesh_terms: D052918:Environmental Restoration and Remediation; D007501:Iron / Q000737:chemistry*; D014501:Uranium / Q000737:chemistry* / Q000302:isolation & purification; D014874:Water Pollutants, Chemical / Q000737:chemistry* / Q000302:isolation & purification; D018508:Water Purification / Q000592:standards
chemical_list: D014874:Water Pollutants, Chemical; D014501:Uranium; D007501:Iron
keywords: Contaminated water treatment; Nanoscale zero valent iron; Uranium