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Xu J, Dong X, Kong C, Zhao Y, Wang J, Zeng X. Influence of Heat Treatment on the Photoelectrochemical Cathodic Protection Performance for SrTiO3 Films. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2022. [DOI: 10.1134/s0036024422120135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Kazery JA, Yang R, Bao L, Zhang Q, James M, Dasari S, Guo F, Nie J, Larson SL, Ballard JH, Knotek-Smith HM, Unz R, Tchounwou PB, Han FX. Horizontal and Vertical Transport of Uranium in an Arid Weapon-Tested Ecosystem. ACS EARTH & SPACE CHEMISTRY 2022; 6:1321-1330. [PMID: 36275877 PMCID: PMC9585917 DOI: 10.1021/acsearthspacechem.2c00028] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Armor-penetrating projectiles and fragments of depleted uranium (DU) have been deposited in soils at weapon-tested sites. Soil samples from these military facilities were analyzed by inductively coupled plasma-optical emission spectroscopy and X-ray diffraction to determine U concentrations and transport across an arid ecosystem. Under arid conditions, both vertical transport driven by evaporation (upward) and leaching (downward) and horizontal transport of U driven by surface runoff in the summer were observed. Upward vertical transport was simulated and confirmed under laboratory-controlled conditions, to be leading to the surface due to capillary action via evaporation during alternating wetting and drying conditions. In the field, the 92.8% of U from DU penetrators and fragments remained in the top 5 cm of soil and decreased to background concentrations in less than 20 cm. In locations prone to high amounts of water runoff, U concentrations were reduced significantly after 20 m from the source due to high surface runoff. Uranium was also transported throughout the ecosystem via plant uptake and wild animal consumption between trophic levels, but with limited accumulation in edible portions in plants and animals.
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Affiliation(s)
- Joseph A Kazery
- Department of Environmental Science, Jackson State University, Jackson, Mississippi 39217, United States
| | - Rui Yang
- Department of Chemistry, Physics and Atmospheric Science, Jackson State University, Jackson, Mississippi 39217, United States
| | - Li Bao
- Department of Chemistry, Physics and Atmospheric Science, Jackson State University, Jackson, Mississippi 39217, United States
| | - Qinku Zhang
- Department of Chemistry, Physics and Atmospheric Science, Jackson State University, Jackson, Mississippi 39217, United States
| | - Markiesha James
- Department of Chemistry, Physics and Atmospheric Science, Jackson State University, Jackson, Mississippi 39217, United States
| | - Shaloam Dasari
- Department of Environmental Science, Jackson State University, Jackson, Mississippi 39217, United States
| | - Fuyu Guo
- Department of Chemistry, Physics and Atmospheric Science, Jackson State University, Jackson, Mississippi 39217, United States
| | - Jing Nie
- Department of Chemistry, Physics and Atmospheric Science, Jackson State University, Jackson, Mississippi 39217, United States
| | - Steve L Larson
- U.S. Army Engineer Research and Development Center, Vicksburg, Mississippi 39180-6199, United States
| | - John H Ballard
- U.S. Army Engineer Research and Development Center, Vicksburg, Mississippi 39180-6199, United States
| | - Heather M Knotek-Smith
- U.S. Army Engineer Research and Development Center, Vicksburg, Mississippi 39180-6199, United States
| | - Ron Unz
- Institute for Clean Energy Technology, Mississippi State University, Starkville, Mississippi 39759, United States
| | - Paul B Tchounwou
- Department of Environmental Science, Jackson State University, Jackson, Mississippi 39217, United States
| | - Fengxiang X Han
- Department of Chemistry, Physics and Atmospheric Science, Jackson State University, Jackson, Mississippi 39217, United States
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Bao L, Guo F, Wang H, Larson SL, Ballard JH, Knotek-Smith HM, Zhang Q, Nie J, Celik A, Islam SM, Dasari S, Zhang N, Han F. Functionalization of clay surface for the removal of uranium from water. MethodsX 2021; 8:101275. [PMID: 34434795 PMCID: PMC8374277 DOI: 10.1016/j.mex.2021.101275] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 01/12/2021] [Accepted: 02/14/2021] [Indexed: 10/25/2022] Open
Abstract
A modification method of clay mineral surface was developed to improve its adsorption capacity of uranium. Uranium is a radionuclide with high toxicity and extremely long half-life, which can pollute the environment and endanger human health. This study proposes a new method of activation of clay mineral surface with phosphoric acid for rapid adsorption of uranium from aqueous solution. Compared with other modification methods, this method has the advantages of availability of raw materials, simple operation and good adsorption effects. It provides a cost-effective material to capture uranium ions from water. The essences of this new development are as following: • Activation and changes of clay minerals' surface functionalities with the treatment of phosphoric acid • Controlled modifications of the surface properties of the clay towards the enhancement of U adsorption capacity • Rapid removal of uranium from water.
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Affiliation(s)
- Li Bao
- Department of Chemistry, Physics and Atmospheric Science, Jackson State University, Jackson, MS 39217, USA.,Yunnan Agricultural University, Kunming 650201, China
| | - Fuyu Guo
- Department of Chemistry, Physics and Atmospheric Science, Jackson State University, Jackson, MS 39217, USA
| | - Hanrui Wang
- Department of Chemistry, Physics and Atmospheric Science, Jackson State University, Jackson, MS 39217, USA
| | - Steven L Larson
- U.S. Army Engineer Research and Development Center, Vicksburg, MS 39180-6199, USA
| | - John H Ballard
- U.S. Army Engineer Research and Development Center, Vicksburg, MS 39180-6199, USA
| | | | - Qinku Zhang
- Department of Chemistry, Physics and Atmospheric Science, Jackson State University, Jackson, MS 39217, USA
| | - Jing Nie
- Department of Chemistry, Physics and Atmospheric Science, Jackson State University, Jackson, MS 39217, USA
| | - Ahmet Celik
- Department of Chemistry, Physics and Atmospheric Science, Jackson State University, Jackson, MS 39217, USA
| | - Saiful M Islam
- Department of Chemistry, Physics and Atmospheric Science, Jackson State University, Jackson, MS 39217, USA
| | - Shalom Dasari
- Department of Chemistry, Physics and Atmospheric Science, Jackson State University, Jackson, MS 39217, USA
| | - Naiming Zhang
- Yunnan Agricultural University, Kunming 650201, China
| | - Fengxiang Han
- Department of Chemistry, Physics and Atmospheric Science, Jackson State University, Jackson, MS 39217, USA
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