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Yoon IH, Lee SH, Kim I, Kim SM. A comparative study on the Cs adsorption/desorption and structural changes in different clay minerals. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:25342-25355. [PMID: 38472574 DOI: 10.1007/s11356-024-32826-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2023] [Accepted: 03/04/2024] [Indexed: 03/14/2024]
Abstract
We investigated the structural changes in clay minerals after Cs adsorption and understood their low desorption efficiency using an ion-exchanger. We focused on the role of interlayers in Cs adsorption and desorption in 2:1 clay minerals, namely illite, hydrobiotite, and montmorillonite, using batch experiments and XRD and EXAFS analyses. The adsorption characteristics of the clay minerals were analyzed using cation exchange capacity (CEC), maximum adsorption isotherms (Qmax), and radiocesium interception potential (RIP) experiments. Although illite showed a low CEC value, it exhibited high selectivity for Cs with a relatively high RIP/CEC ratio. The Cs desorption efficiency after treatment with a NaCl ion exchanger was the highest for illite (74.3%), followed by hydrobiotite (45.5%) and montmorillonite (30.3%); thus, Cs adsorbed onto planar sites, rather than on interlayers or frayed edge sites (FESs), is easily desorbed. After NaCl treatment, XRD analysis showed that the low desorption efficiency was due to the collapse of the interlayer-fixed Cs, which tightly narrowed the interlayers' hydrobiotite due to the ion exchange of divalent cations (Mg2+ or Ca2+) into the monovalent cation (Na+). Moreover, EXAFS analysis showed that hydrobiotite formed inner-sphere structures after NaCl desorption, indicating that it was difficult to remove Cs from NaCl desorption due to the collapsed hydrobiotite and montmorillonite interlayers as well as the strong bonding in FESs of illite. In contrast, chelation desorption using oxalic acid effectively dissolved the narrowed interlayers of hydrobiotite (98%) and montmorillonite (85.26%), enhancing the desorption efficiency. Therefore, low desorption efficiency for Cs clays using an ion exchanger was caused by the collapsed interlayer due to the exchange between monovalent cation and divalent cation.
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Affiliation(s)
- In-Ho Yoon
- Decommissioning Technology Research Division, Korea Atomic Energy Research Institute, 989-111, Daedeok-Daero, Yuseong-Gu, Daejeon, 34057, Republic of Korea.
| | - Sang-Ho Lee
- Disposal Performance Demonstration Research Division, Korea Atomic Energy Research Institute, Daedeok-Daero 989-111, Yuseong-Gu, Daejeon, 305-353, Republic of Korea
| | - Ilgook Kim
- Decommissioning Technology Research Division, Korea Atomic Energy Research Institute, 989-111, Daedeok-Daero, Yuseong-Gu, Daejeon, 34057, Republic of Korea
| | - Sung Man Kim
- Decommissioning Technology Research Division, Korea Atomic Energy Research Institute, 989-111, Daedeok-Daero, Yuseong-Gu, Daejeon, 34057, Republic of Korea
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Zakharikhina LV, Shevelev SG. Role of alkaline barriers in radionuclide distribution in river valley environments on the Russian Black Sea coast. JOURNAL OF ENVIRONMENTAL RADIOACTIVITY 2022; 251-252:106952. [PMID: 35797903 DOI: 10.1016/j.jenvrad.2022.106952] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2021] [Revised: 06/19/2022] [Accepted: 06/21/2022] [Indexed: 06/15/2023]
Abstract
This paper reports on the radioecological properties of environmental components in the Mzymta and Sochi River valleys on the Russian Black Sea coast. The environmental components covered are river sediments, alluvial soils, mosses, and fluvial water. Inductively Coupled Plasma Mass Spectrometry (ICP-MS) was used to determine the distribution patterns of Th and U stemming from two geochemical alkaline barriers present in the river valleys. One is a calcium barrier resulting from the metamorphic transition from neutral mudstones to alkaline carbonate rocks. The other is a sodium barrier formed in estuaries under the influence of Na-rich tidal seawater. The sodium barrier was responsible for an increase in Th and U concentrations in river water, a slight decrease in soil and sediments, and strong sorption on mosses. The calcium barrier reduced Th and U concentrations in river water, but increased them in soil and mosses. In the Sochi River valley, the content of calcium in the components of the natural environment is higher compared to the Mzymta River valley and, on average, 4 times higher in the river water. This factor determines the relatively high Th and U content in the natural environment of the Sochi River valley, as these radionuclides are easily extracted from the mineral component of river water by carbonate solutions. On the whole, the radioecological status of the river valleys was recognized as favourable. Gamma radiation exposure dose rate near the surface (20-27 μR/h or less in mountainous areas and 9-17 μR/h in the lowlands) was below the natural level typical for open mountainous areas of central Russia. River sediments in both valleys had low radionuclide concentrations based on the specific activities of naturally occurring radionuclides 226Ra, 228Ra, 224Ra, 232Th, and 40K. In similar river basins that may be targeted for future development, accumulation of Th and U in soil and mosses on calcium barriers and elevated concentrations in river water on sodium barriers should be expected.
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Affiliation(s)
- Lalita V Zakharikhina
- Federal Research Centre the Subtropical Scientific Centre of the Russian Academy of Sciences, 2/28 Jānis Fabriciuss, Krasnodar Krai, Sochi, 354002, Russia.
| | - Sergey G Shevelev
- Federal State Budgetary Institution "Caucasian State Biosphere Natural Reserve named after KH.G. Shaposhnikova, 8 Karl Marx Street, Krasnodar Krai, Sochi, Adler district, 354340, Russia.
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Kirby M, Weiss DJ. A pilot study on the effect of desferrioxamine B on uranium VI precipitation and dissolution in pH 11.5, 0.1 M NaCl solutions. J Radioanal Nucl Chem 2022. [DOI: 10.1007/s10967-022-08245-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
AbstractA pilot study investigating the possible role of desferrioxamine B (DFOB) to prevent UVI precipitation in alkaline NaCl solutions was carried out. Desferrioxamine B is a hydroxamate siderophore occurring naturally in the environment. The siderophore can possibly mobilize UVI from a wide range of sources such as mine tailings, contaminated land and radioactive waste storage and disposal facilities. The results from a series of batch experiments covering a wide range of naturally occurring concentrations over relevant time scales (3 days and 2 months) show that DFOB can quantitatively prevent UVI precipitation as ≥ 0.2 μm precipitates when 130 µM and 420 µM of the DFOB is present in solution. The impact is minimized as its concentration decrease to below 10 µM, suggesting these ligands will have a less mobilizing effect on uranium from a geological disposal facility if present in its VI oxidation state.
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Verma S, Kim KH. Graphene-based materials for the adsorptive removal of uranium in aqueous solutions. ENVIRONMENT INTERNATIONAL 2022; 158:106944. [PMID: 34689036 DOI: 10.1016/j.envint.2021.106944] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Revised: 09/19/2021] [Accepted: 10/17/2021] [Indexed: 06/13/2023]
Abstract
Ground water contamination by radioactive elements has become a critical issue that can pose significant threats to human health. Adsorption is the most promising approach for the removal of radioactive elements owing to its simplicity, effectiveness, and easy operation. Among the plethora of functional adsorbents, graphene oxide and its derivatives are recognized for their excellent potential as adsorbent with the unique 2D structure, high surface area, and intercalated functional groups. To learn more about their practical applicability, the procedures involved in their preparation and functionalization are described with the microscopic removal mechanism by GO functionalities across varying solution pH. The performance of these adsorbents is assessed further in terms of the basic performance metrics such as partition coefficient. Overall, this article is expected to provide valuable insights into the current status of graphene-based adsorbents developed for uranium removal with a guidance for the future directions in this research field.
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Affiliation(s)
- Swati Verma
- Department of Civil & Environmental Engineering, Hanyang University, 222 Wangsimni-Ro, Seoul 04763, Korea
| | - Ki-Hyun Kim
- Department of Civil & Environmental Engineering, Hanyang University, 222 Wangsimni-Ro, Seoul 04763, Korea.
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Sorption of U(VI) on Schiff-base functionalized metal–organic frameworks UiO-66-NH2. J Radioanal Nucl Chem 2021. [DOI: 10.1007/s10967-020-07550-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Du C, Zuo R, Chen M, Wang J, Liu X, Liu L, Lin Y. Influence of colloidal Fe(OH) 3 on the adsorption characteristics of strontium in porous media from a candidate high-level radioactive waste geological disposal site. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2020; 260:113997. [PMID: 32014743 DOI: 10.1016/j.envpol.2020.113997] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2019] [Revised: 12/18/2019] [Accepted: 01/14/2020] [Indexed: 06/10/2023]
Abstract
Colloids in groundwater or geological barriers generally play a key role in the migration of special nuclides. Adsorption characteristics of strontium were investigated on porous media in the presence of colloidal Fe(OH)3 from the Beishan Site, the only high-level radioactive waste disposal site candidate in China. The effects of colloid amounts, solid contents, and pH were determined and studied by batch texts. The results revealed that the presence of colloidal Fe(OH)3 in porous media contributed to promotion of the sorption effect, and the influencing factors had a significant impact on the adsorption process. The sorption ability increased with increasing colloid amount when the equilibrium time was approximately 10 h under an optimal solid-liquid ratio of 20 g L-1. The sorption effect in alkaline conditions was better than that under acidic conditions. The sorption kinetics indicated that the strong chemical interaction and/or surface complexation contributed primarily to strontium sorption. The sorption isotherms and model fitting revealed that the sorption of strontium onto porous media in the presence of colloidal Fe(OH)3 was a monolayer adsorption, and the presence of colloidal Fe(OH)3 is an important factor that greatly influences the removal of strontium from aqueous solutions. These findings provide useful information for the treatment of strontium in radioactive waste disposal sites.
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Affiliation(s)
- Can Du
- College of Water Sciences, Beijing Normal University, Beijing 100875, China; Engineering Research Center of Groundwater Pollution Control and Remediation, Ministry of Education, Beijing 100875, China
| | - Rui Zuo
- College of Water Sciences, Beijing Normal University, Beijing 100875, China; Engineering Research Center of Groundwater Pollution Control and Remediation, Ministry of Education, Beijing 100875, China.
| | - Minhua Chen
- College of Water Sciences, Beijing Normal University, Beijing 100875, China; Engineering Research Center of Groundwater Pollution Control and Remediation, Ministry of Education, Beijing 100875, China
| | - Jinsheng Wang
- College of Water Sciences, Beijing Normal University, Beijing 100875, China; Engineering Research Center of Groundwater Pollution Control and Remediation, Ministry of Education, Beijing 100875, China
| | - Xin Liu
- College of Water Sciences, Beijing Normal University, Beijing 100875, China; Engineering Research Center of Groundwater Pollution Control and Remediation, Ministry of Education, Beijing 100875, China
| | - Li Liu
- College of Water Sciences, Beijing Normal University, Beijing 100875, China; Engineering Research Center of Groundwater Pollution Control and Remediation, Ministry of Education, Beijing 100875, China
| | - Yuanhui Lin
- College of Water Sciences, Beijing Normal University, Beijing 100875, China; Engineering Research Center of Groundwater Pollution Control and Remediation, Ministry of Education, Beijing 100875, China
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Kirby ME, Watson JS, Najorka J, Kenney JPL, Krevor S, Weiss DJ. Experimental study of pH effect on uranium (UVI) particle formation and transport through quartz sand in alkaline 0.1 M sodium chloride solutions. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2019.124375] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Gray A, Chiorescu I, Krüger S, Rösch N. Mononuclear Hydroxo Carbonato Complexes of Np(V), Np(VI), and U(VI): A Density Functional Study. Eur J Inorg Chem 2019. [DOI: 10.1002/ejic.201900759] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Andrew Gray
- Department Chemie Technische Universität München 85748 Garching Germany
| | - Ion Chiorescu
- Department Chemie Technische Universität München 85748 Garching Germany
| | - Sven Krüger
- Department Chemie Technische Universität München 85748 Garching Germany
| | - Notker Rösch
- Department Chemie Technische Universität München 85748 Garching Germany
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Niu Z, Wei X, Qiang S, Wu H, Pan D, Wu W, Fan Q. Spectroscopic studies on U(VI) incorporation into CaCO 3: Effects of aging time and U(VI) concentration. CHEMOSPHERE 2019; 220:1100-1107. [PMID: 33395797 DOI: 10.1016/j.chemosphere.2019.01.010] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2018] [Revised: 12/22/2018] [Accepted: 01/02/2019] [Indexed: 06/12/2023]
Abstract
In this study, the incorporation of U(VI) into CaCO3 under different aging times and U(VI) concentrations was studied by combining batch experiments, X-ray diffraction (XRD), attenuated total reflection Fourier transformed infrared spectroscopy (ATR-FTIR), and extended X-ray absorption fine structure (EXAFS) approaches. Batch sorption experiments showed that the sorption of U(VI) on calcite was strong pH-dependence, and high pH was beneficial for U(VI) sorption possibly due to the electrostatic attraction between positively charged calcite and negatively charged uranyl tri-carbonate species. XRD patterns showed that the [104] facet of calcite shifted toward low angle at pH ∼10.0, which indicated that the uranyl tri-carbonate species of U(VI) possibly diffused into calcite lattice by replacing Ca atoms, and then induced the expansion of calcite crystal cell. The incorporation of U(VI) into CaCO3 showed that the uptake of U(VI) gradually decreased within the first 200 h, and then significantly increased with the increasing aging time. U(VI) incorporation into CaCO3 might experience vaterite, transition from vaterite to calcite, and calcite stages, which were confirmed by XRD, ATR-FTIR, and X-ray absorption near-edge structure (XANES) spectroscopy. As the U(VI) concentration increased, the transition time from vaterite to calcite correspondingly increased, indicating that U(VI) incorporation into CaCO3 can stabilize vaterite phase. EXAFS analyses suggested that the local structure of uranyl moiety was changing during the incorporation process, and the species of U(VI) incorporation into vaterite was similar to uranyl carbonates, however indeed different from the species of uranyl tri-carbonate presented in calcite.
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Affiliation(s)
- Zhiwei Niu
- Radiochemistry Laboratory, School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, China
| | - Xiaoyan Wei
- Radiochemistry Laboratory, School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, China; Key Laboratory of Petroleum Resources, Gansu Province, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China
| | - Shirong Qiang
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, and Institute of Physiology, School of Basic Medical Sciences, Lanzhou University, Lanzhou 730000, China.
| | - Hanyu Wu
- Radiochemistry Laboratory, School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, China; Key Laboratory of Petroleum Resources, Gansu Province, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China
| | - Duoqiang Pan
- Radiochemistry Laboratory, School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, China
| | - Wangsuo Wu
- Radiochemistry Laboratory, School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, China
| | - Qiaohui Fan
- Key Laboratory of Petroleum Resources, Gansu Province, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China.
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10
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Li P, Wang J, Wang X, He B, Pan D, Liang J, Wang F, Fan Q. Arsenazo-functionalized magnetic carbon composite for uranium(VI) removal from aqueous solution. J Mol Liq 2018. [DOI: 10.1016/j.molliq.2018.08.073] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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11
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Yin Z, Pan D, Li P, Liu P, Wu H, Wu W. Retardation of hexavalent uranium in muscovite environment: a batch study. RADIOCHIM ACTA 2018. [DOI: 10.1515/ract-2017-2888] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Abstract
The sorption of hexavalent uranium on muscovite as a function of pH, background electrolyte, temperature and humic acid (HA) was investigated in detail using batch experiments. The results showed that the uranium sorpiton on muscovite was kinetic fast, the kinetic process was fitted well by pseudo-second-order kinetic model. The sorption of uranium depended strongly on pH while weakly on background electrolyte concentration, indicating that surface complexation dominated the sorption process. The escalation of temperature and humic acid concentration were favorable to uranium sorption on muscovite. The sorption isotherms at pH 6.0 could be described better by Langmuir model than Freundlich or Dubinin-Radushkevich (D-R) model, thermodynamic data indicated that the uranium sorption process on muscovite was spontaneous and endothermic process. The findings in present work can provide important experimental reference for understanding the environmental behavior of uranium in mica-rich terrains.
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Affiliation(s)
- Zhuoxin Yin
- Radiochemistry and Nuclear Environment Laboratory , School of Nuclear Science and Technology, Lanzhou University , Lanzhou 730000 , China
| | - Duoqiang Pan
- Radiochemistry and Nuclear Environment Laboratory , School of Nuclear Science and Technology, Lanzhou University , Lanzhou 730000 , China
- Key Laboratory of Special Function Materials and Structure Design , Ministry of Education , Lanzhou 730000 , China , Tel.: +86 931 8913594, Fax: +86 931 8913594
| | - Ping Li
- Key Laboratory of Petroleum Resources, Gansu Province/CAS Key Laboratory of Petroleum Resources Research , Institute of Geology and Geophysics, Chinese Academy of Sciences , Lanzhou 730000 , China
| | - Peng Liu
- Radiochemistry and Nuclear Environment Laboratory , School of Nuclear Science and Technology, Lanzhou University , Lanzhou 730000 , China
| | - Hanyu Wu
- Radiochemistry and Nuclear Environment Laboratory , School of Nuclear Science and Technology, Lanzhou University , Lanzhou 730000 , China
- Key Laboratory of Petroleum Resources, Gansu Province/CAS Key Laboratory of Petroleum Resources Research , Institute of Geology and Geophysics, Chinese Academy of Sciences , Lanzhou 730000 , China
| | - Wangsuo Wu
- Radiochemistry and Nuclear Environment Laboratory , School of Nuclear Science and Technology, Lanzhou University , Lanzhou 730000 , China
- Key Laboratory of Special Function Materials and Structure Design , Ministry of Education , Lanzhou 730000 , China , Tel.: +86 931 8913594, Fax: +86 931 8913594
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12
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Fan F, Pan D, Wu H, Zhang T, Wu W. Succinamic Acid Grafted Nanosilica for the Preconcentration of U(VI) from Aqueous Solution. Ind Eng Chem Res 2017. [DOI: 10.1021/acs.iecr.6b04652] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Fuyou Fan
- Radiochemistry
Laboratory, School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, China
- Institute
of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Duoqiang Pan
- Radiochemistry
Laboratory, School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, China
- Key Laboratory of Special Function Materials and Structure Design, Ministry of Education, Lanzhou 730000, China
| | - Hanyu Wu
- Radiochemistry
Laboratory, School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, China
- Key Laboratory of Special Function Materials and Structure Design, Ministry of Education, Lanzhou 730000, China
| | - Tianjiao Zhang
- The
Second Medical College, Lanzhou University, Lanzhou 730000, China
| | - Wangsuo Wu
- Radiochemistry
Laboratory, School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, China
- Key Laboratory of Special Function Materials and Structure Design, Ministry of Education, Lanzhou 730000, China
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13
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Guo W, Nie C, Wang L, Li Z, Zhu L, Zhu L, Zhu Z, Shi W, Yuan L. Easily prepared and stable functionalized magnetic ordered mesoporous silica for efficient uranium extraction. Sci China Chem 2016. [DOI: 10.1007/s11426-016-5561-8] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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14
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Dihydroxy bezladely derivatives functionalized mesoporous silica SBA-15 for the sorption of U(VI). J Radioanal Nucl Chem 2016. [DOI: 10.1007/s10967-016-4779-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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15
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Mesoporous silica (KIT-6) derivatized with hydroxyquinoline functionalities as a selective adsorbent of uranium(VI). J Radioanal Nucl Chem 2015. [DOI: 10.1007/s10967-015-4474-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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16
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Use of the crosslinked copolymer functionalized with acrylic acid for the removal of strontium ions from aqueous solutions. J Radioanal Nucl Chem 2015. [DOI: 10.1007/s10967-015-4019-3] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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17
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Du Y, Yin Z, Wu H, Li P, Qi W, Wu W. Sorption of U(VI) on magnetic illite: effects of pH, ions, humic substances and temperature. J Radioanal Nucl Chem 2015. [DOI: 10.1007/s10967-014-3893-4] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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18
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Fan QH, Hao LM, Wang CL, Zheng Z, Liu CL, Wu WS. The adsorption behavior of U(VI) on granite. ENVIRONMENTAL SCIENCE. PROCESSES & IMPACTS 2014; 16:534-541. [PMID: 24509808 DOI: 10.1039/c3em00324h] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The effects of pH, counter ions and temperature on the adsorption of U(VI) on Beishan granite (BsG) were investigated in the presence and absence of fulvic acid (FA) and humic acid (HA). The adsorption edge of U(VI) on BsG suggested that U(VI) adsorption was mainly controlled by ion exchange and outer-sphere complexation at low pH, whereas inner-sphere complex was the dominant adsorption species in the pH range of 4.0-9.0. Above pH 9.0, Na2U2O7 might play an important role in the rise of U(VI) adsorption again. Counter ions such as Cl(-), SO4(2-) and PO4(3-) can provoke U(VI) adsorption on BsG to some extent, which was directly correlated to the complexing ability of U(VI)-ligand. More noticeably, the large enhancement of U(VI) adsorption in the presence of phosphate can be attributed to the ternary complex formation (BsG-PO4-UO2), precipitation ((UO2)3(PO4)2(s)) and secondary phase (Na-autunite). Both FA and HA can slightly increase U(VI) adsorption at low pH, whereas they strongly inhibited U(VI) adsorption at high pH range. Artificial synthesized granite (AsG) prepared in the laboratory is impossible to use as an analogue of natural granite because of the large difference in the adsorption and surface properties.
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Affiliation(s)
- Q H Fan
- Beijing National Laboratory for Molecular Sciences, Radiochemistry & Radiation Chemistry Key Laboratory for Fundamental Science, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China.
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19
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Surface modification to improve the sorption property of U(VI) on mesoporous silica. J Radioanal Nucl Chem 2014. [DOI: 10.1007/s10967-014-2922-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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20
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Wang YL, Song LJ, Zhu L, Guo BL, Chen SW, Wu WS. Removal of uranium(vi) from aqueous solution using iminodiacetic acid derivative functionalized SBA-15 as adsorbents. Dalton Trans 2014; 43:3739-49. [DOI: 10.1039/c3dt52610k] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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21
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Wang YL, Zhu L, Guo BL, Chen SW, Wu WS. Mesoporous silica SBA-15 functionalized with phosphonate derivatives for uranium uptake. NEW J CHEM 2014. [DOI: 10.1039/c3nj01494k] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Good selective sorption ability of SBA-15-PA for U(VI).
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Affiliation(s)
- Yu-Long Wang
- School of Nuclear Science and Technology
- Lanzhou University
- Lanzhou, PR China
| | - Lu Zhu
- School of Nuclear Science and Technology
- Lanzhou University
- Lanzhou, PR China
| | - Bo-Long Guo
- School of Nuclear Science and Technology
- Lanzhou University
- Lanzhou, PR China
| | - Su-Wen Chen
- School of Nuclear Science and Technology
- Lanzhou University
- Lanzhou, PR China
| | - Wang-Suo Wu
- School of Nuclear Science and Technology
- Lanzhou University
- Lanzhou, PR China
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22
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Alaniz CD, Regil EO, Cruz GJC, Torres JR, Monroy JL. Composition and properties of tectosilicate-uranium layers of soil. ACTA ACUST UNITED AC 2012. [DOI: 10.5155/eurjchem.3.1.32-36.525] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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23
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Adsorption of uranium ions by crosslinked polyester resin functionalized with acrylic acid from aqueous solutions. J Radioanal Nucl Chem 2011. [DOI: 10.1007/s10967-011-1533-9] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Fan QH, Li P, Chen YF, Wu WS. Preparation and application of attapulgite/iron oxide magnetic composites for the removal of U(VI) from aqueous solution. JOURNAL OF HAZARDOUS MATERIALS 2011; 192:1851-1859. [PMID: 21803491 DOI: 10.1016/j.jhazmat.2011.07.022] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2010] [Revised: 07/06/2011] [Accepted: 07/06/2011] [Indexed: 05/31/2023]
Abstract
Recently, magnetic sorbents have received considerable attention because of their excellent segregative features and sorption capacities. Herein, attapulgite/iron oxide magnetic (ATP/IOM) composites were prepared and characterized. The sorption results indicated that ATP/IOM composites were superior to ATP and iron oxides individually for the removal of U(VI) from aqueous solution. Based on X-ray photoelectron spectroscopy (XPS) analysis and surface complexation model, the main sorption species of U(VI) on ATP were==X(2)UO(2)(0) below pH 4.0 and==S(s)OUO(2)(+), ==S(w)OUO(2)CO(3)(-), and==S(w)OUO(2)(CO(3))(2)(3-) above pH 5.0. However the prevalent species on ATP/IOM composites were==S(s)OUO(2)(+) and==S(w)OUO(2)(CO(3))(2)(3-) over the observed pH range. ATP/IOM composites are a promising candidate for pre-concentration and immobilization of radionuclides from large volumes of aqueous solutions, as required for remediation purposes.
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Affiliation(s)
- Qiao-Hui Fan
- Radiochemistry Laboratory, School of Nuclear Science and Technology, Lanzhou University, Lanzhou, Gansu 73000, China
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Uranium and lead adsorption onto bentonite and zeolite modified with polyacrylamidoxime. J Radioanal Nucl Chem 2011. [DOI: 10.1007/s10967-011-1415-1] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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