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Lei H, Song S, Pan N, Zou H, Wang X, Tuo X. Redox-active phytic acid-based self-assembled hybrid material for enhanced uranium adsorption from highly acidic solution. JOURNAL OF HAZARDOUS MATERIALS 2024; 465:133227. [PMID: 38091800 DOI: 10.1016/j.jhazmat.2023.133227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2023] [Revised: 11/26/2023] [Accepted: 12/08/2023] [Indexed: 02/08/2024]
Abstract
Achieving efficient uranium adsorption from highly acidic wastewater is still considered challenging. Here, an inorganic-organic hybridized self-assembly material (rPFE-10) with redox activity was constructed by phytic acid (PA), ethylenediamine (EDA), and Fe(II) via a facile one-pot route, and further applied for U(VI) removal. In the static adsorption experiment, rPFE-10 achieved the maximum U(VI) adsorption capacity of 717.1 mg/g at the optimal pH of 3.5. It also performed preeminently in a highly acidic condition of pH = 1.0, with the highest adsorption capacity of 551.2 mg/g and an equilibrium time of 30 min. Moreover, rPFE-10 exhibited a pH-responsive adsorption selectivity for U(VI) and An-Ln (S(U(VI)) and S(An-Ln)), which increased to 69 % and 94 % respectively as pH decreased from 3.0 to 1.0. Additionally, the spectral analysis revealed a reconstruction mechanism induced by multiple synergistic adsorption, in which U(VI) exchange with EDA+/2+ and Fe2+/3+ and earned suitable coordination geometry and ligand environment to coordinate with PA (mainly P-OH), while partial U(VI) is reduced by Fe(II) in framework. This work not only highlights the facile strategy for enhanced U(VI) retention in highly acidic solution, but expands the potential application of supramolecular self-assembly material in treatment of nuclear wastewater.
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Affiliation(s)
- Hao Lei
- Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang, China
| | - Shilong Song
- School of Environment and Resource, Southwest University of Science and Technology, Mianyang 621010, China; Fundamental Science on Nuclear Wastes and Environmental Safety Laboratory, Southwest University of Science and Technology, Mianyang 621010, China
| | - Ning Pan
- Fundamental Science on Nuclear Wastes and Environmental Safety Laboratory, Southwest University of Science and Technology, Mianyang 621010, China
| | - Hao Zou
- Fundamental Science on Nuclear Wastes and Environmental Safety Laboratory, Southwest University of Science and Technology, Mianyang 621010, China
| | - Xiaoqiang Wang
- Fundamental Science on Nuclear Wastes and Environmental Safety Laboratory, Southwest University of Science and Technology, Mianyang 621010, China.
| | - Xianguo Tuo
- Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang, China; School of Computer Science and Engineering, Sichuan University of Science and Engineering, Zigong, China.
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Meza I, Hua H, Gagnon K, Mulchandani A, Gonzalez-Estrella J, Burns PC, Ali AMS, Spilde M, Peterson E, Lichtner P, Cerrato JM. Removal of Aqueous Uranyl and Arsenate Mixtures after Reaction with Limestone, PO 43-, and Ca 2. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2023; 57:20881-20892. [PMID: 38019567 PMCID: PMC10739782 DOI: 10.1021/acs.est.3c03809] [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] [Indexed: 11/30/2023]
Abstract
The co-occurrence of uranyl and arsenate in contaminated water caused by natural processes and mining is a concern for impacted communities, including in Native American lands in the U.S. Southwest. We investigated the simultaneous removal of aqueous uranyl and arsenate after the reaction with limestone and precipitated hydroxyapatite (HAp, Ca10(PO4)6(OH)2). In benchtop experiments with an initial pH of 3.0 and initial concentrations of 1 mM U and As, uranyl and arsenate coprecipitated in the presence of 1 g L-1 limestone. However, related experiments initiated under circumneutral pH conditions showed that uranyl and arsenate remained soluble. Upon addition of 1 mM PO43- and 3 mM Ca2+ in solution (initial concentration of 0.05 mM U and As) resulted in the rapid removal of over 97% of U via Ca-U-P precipitation. In experiments with 2 mM PO43- and 10 mM Ca2+ at pH rising from 7.0 to 11.0, aqueous concentrations of As decreased (between 30 and 98%) circa pH 9. HAp precipitation in solids was confirmed by powder X-ray diffraction and scanning electron microscopy/energy dispersive X-ray. Electron microprobe analysis indicated U was coprecipitated with Ca and P, while As was mainly immobilized through HAp adsorption. The results indicate that natural materials, such as HAp and limestone, can effectively remove uranyl and arsenate mixtures.
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Affiliation(s)
- Isabel Meza
- Department of Civil, Construction & Environmental Engineering, University of New Mexico, Albuquerque, New Mexico 87131, United States
- Center for Water and the Environment, University of New Mexico, Albuquerque, New Mexico 87131, United States
| | - Han Hua
- Department of Civil, Construction & Environmental Engineering, University of New Mexico, Albuquerque, New Mexico 87131, United States
- Center for Water and the Environment, University of New Mexico, Albuquerque, New Mexico 87131, United States
| | - Kaelin Gagnon
- Department of Civil, Construction & Environmental Engineering, University of New Mexico, Albuquerque, New Mexico 87131, United States
- Center for Water and the Environment, University of New Mexico, Albuquerque, New Mexico 87131, United States
| | - Anjali Mulchandani
- Department of Civil, Construction & Environmental Engineering, University of New Mexico, Albuquerque, New Mexico 87131, United States
- Center for Water and the Environment, University of New Mexico, Albuquerque, New Mexico 87131, United States
| | - Jorge Gonzalez-Estrella
- School of Civil and Environmental Engineering, College of Engineering, Architecture, and Technology, Oklahoma State University, Stillwater, Oklahoma 74078, United States
| | - Peter C Burns
- Department of Civil and Environmental Engineering and Earth Sciences and Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Abdul-Mehdi S Ali
- Department of Earth and Planetary Sciences, MSC03 2040, University of New Mexico, Albuquerque, New Mexico 87131, United States
| | - Michael Spilde
- Department of Earth and Planetary Sciences, MSC03 2040, University of New Mexico, Albuquerque, New Mexico 87131, United States
| | - Eric Peterson
- Department of Earth and Planetary Sciences, MSC03 2040, University of New Mexico, Albuquerque, New Mexico 87131, United States
| | - Peter Lichtner
- Center for Water and the Environment, University of New Mexico, Albuquerque, New Mexico 87131, United States
| | - José M Cerrato
- Department of Civil, Construction & Environmental Engineering, University of New Mexico, Albuquerque, New Mexico 87131, United States
- Center for Water and the Environment, University of New Mexico, Albuquerque, New Mexico 87131, United States
- UNM Metals Exposure and Toxicity Assessment on Tribal Lands in the Southwest (UNM METALS) Superfund Research Program Center, Albuquerque,New Mexico 87131, United States
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Parimi A, Mosher E, Schreckenbach G. Periodic trends in trivalent actinide halides, phosphates, and arsenates. Dalton Trans 2023; 52:18035-18044. [PMID: 37987618 DOI: 10.1039/d2dt02725a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2023]
Abstract
Due to the limited abundance of the actinide elements, computational methods, for now, remain an exclusive avenue to investigate the periodic trends across the actinide series. As every actinide element can exhibit a +3-oxidation state, we have explored model systems of gas-phase actinide trihalides, phosphates, and arsenates across the series to capture the periodic trends. By doing so, we were able to capture the periodic trends down the halogen series as well, and for the first time we are reporting a study on actinide astatides. Using scalar and spin-orbit relativistic Density Functional Theory (DFT) calculations, we have explored the variations in bond lengths, bond angles, and the charges on actinides (An). Despite the use of different sets of ligands, the trends remain similar. The properties of trivalent Pa, U, Np, and Pu are nearly identical; similar ionic radii could be the reason. The actinide elements show a tendency to exhibit a pre-Pu and a post-Cm behaviour, with Am acting as a switch. This could be due to the change in the behaviour from d-f-type to f-filling/d-type at around Pu-Cm in the actinides as already proposed in the previous literature. Bond lengths in the AnX3 increase down the halide series, and the atomic charges decrease on the actinide elements.
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Affiliation(s)
- Ashutosh Parimi
- Department of Chemistry, University of Manitoba, Winnipeg, Manitoba, R3T 2N2, Canada.
| | - Emmalee Mosher
- Department of Chemistry, University of Manitoba, Winnipeg, Manitoba, R3T 2N2, Canada.
| | - Georg Schreckenbach
- Department of Chemistry, University of Manitoba, Winnipeg, Manitoba, R3T 2N2, Canada.
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Oh M, Lee K, Kim KW, Foster RI, Lee CH. Uranyl peroxide ((UO2)(O2)·4H2O; UO4) precipitation for uranium sequestering: formation and physicochemical characterization. J Radioanal Nucl Chem 2022. [DOI: 10.1007/s10967-022-08299-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Yin Q, Lyu P, Wang G, Wang B, Li Y, Zhou Z, Guo Y, Li L, Deng N. Phosphorus-modified biochar cross-linked Mg-Al layered double-hydroxide stabilizer reduced U and Pb uptake by Indian mustard (Brassica juncea L.) in uranium contaminated soil. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2022; 234:113363. [PMID: 35248924 DOI: 10.1016/j.ecoenv.2022.113363] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Revised: 02/22/2022] [Accepted: 02/26/2022] [Indexed: 06/14/2023]
Abstract
The decommissioning of uranium tailings (UMT) is usually accompanied by uranium (U) contamination in soil, which poses a serious threat to human health and ecological security. Therefore, the remediation of uranium pollution in soil is imminent from ecological and environmental points of view. In recent years, the use of biochar stabilizers to repair uranium tailings (UMT) soil has become a research hotspot. In this study, a novel phosphorus-modified bamboo biochar (PBC) cross-linked Mg-Al layered double-hydroxide composite (PBC@LDH) was prepared. The hyperaccumulator plant Indian mustard (Brassica juncea L.) was selected as the test plant for outdoor pot experiments, and the stabilizers were added to the UMT soil at the dosage ratio of 15 g kg-1, which verified the bioconcentrate and translocate of U and associated heavy metal Pb in the UMT soil by Indian mustard after stabilizer remediated. The results shown that, after 50 days of growth, compared with the untreated sample (CK), the Indian mustard in PBC@LDH treatment possessed a better growth and its biomass weight of whole plant was increased by 52.7%. Meanwhile, the bioconcentration factors (BF) of U and Pb for PBC@LDH treatment were significantly decreased by 73.4% and 34.2%, respectively; and the translocation factors (TF) were also commendable reduced by 15.1% and 2.4%, respectively. Furthermore, the Tessier available forms of U and Pb in rhizosphere soil showed a remarkably decrease compared with CK, which reached by 55.97% and 14.1% after PBC@LDH stabilization, respectively. Complexation, precipitation, and reduction of functional groups released by PBC@LDH with U and Pb described the immobilization mechanisms of biochar stabilizer preventing U and Pb enrichment in Indian mustard. As well as, the formation of U-containing vesicles was prevented by the precipitation of -OH functional groups with free U and Pb ions around the cell tissue fluids and vascular bundle structure of plant roots, thereby reducing the migration risk of toxic heavy metals to above-ground parts. In conclusion, this research demonstrates that the PBC@LDH stabilizer offers a potentially effective amendment for the remediation of U contaminated soil.
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Affiliation(s)
- Qiuling Yin
- School of Water Resources & Environmental Engineering, East China University of Technology, Nanchang 330013, China
| | - Peng Lyu
- Key Laboratory of Agro-Environment, Ministry of Agriculture, Beijing 100101, China; Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Guanghui Wang
- State Key Laboratory of Nuclear Resources and Environment, East China University of Technology, Nanchang 330013, China; School of Water Resources & Environmental Engineering, East China University of Technology, Nanchang 330013, China.
| | - Bing Wang
- School of Water Resources & Environmental Engineering, East China University of Technology, Nanchang 330013, China
| | - Yingjie Li
- School of Water Resources & Environmental Engineering, East China University of Technology, Nanchang 330013, China
| | - Zhongkui Zhou
- State Key Laboratory of Nuclear Resources and Environment, East China University of Technology, Nanchang 330013, China; School of Water Resources & Environmental Engineering, East China University of Technology, Nanchang 330013, China
| | - Yadan Guo
- State Key Laboratory of Nuclear Resources and Environment, East China University of Technology, Nanchang 330013, China; School of Water Resources & Environmental Engineering, East China University of Technology, Nanchang 330013, China
| | - Lianfang Li
- Key Laboratory of Agro-Environment, Ministry of Agriculture, Beijing 100101, China; Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Nansheng Deng
- School of Resources and Environmental Science, Wuhan University,Wuhan 430079, China
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Lyu P, Wang G, Cao Y, Wang B, Deng N. Phosphorus-modified biochar cross-linked Mg-Al layered double-hydroxide composite for immobilizing uranium in mining contaminated soil. CHEMOSPHERE 2021; 276:130116. [PMID: 33690044 DOI: 10.1016/j.chemosphere.2021.130116] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Revised: 02/21/2021] [Accepted: 02/24/2021] [Indexed: 06/12/2023]
Abstract
The decommissioning of uranium mill tailings (UMTs) is usually accompanied by uranium (U) contamination in soil, which poses a serious threat to human health and ecological safety. In this study, a novel phosphorus-modified bamboo biochar (PBC) cross-linked Mg-Al layered double-hydroxide (LDH) composite ("PBC@LDH") was successfully prepared by phosphate pre-impregnation and a hydrothermal method with Mg-Al LDH. Physicochemical analysis revealed that phosphorus-containing functional groups and Mg-Al LDH were grafted onto the pristine biochar (BC) matrix. Laboratory-scale incubation and column leaching experiments were performed on the prepared BC, PBC, and PBC@LDH. The results showed that, at a dosage of 10%, the PBC@LDH composite had a commendable ability to immobilize U in soil. After 40 days of incubation with the stabilizer, the more mobile U was converted into immobilized species. Furthermore, during a column leaching experiment with simulated acid rain, the cumulative loss and leaching efficiency of U were remarkably reduced by PBC@LDH treatment compared with the control, reaching 53% and 54%, respectively. Surface complexation, co-precipitation, and reduction described the adsorption and immobilization mechanisms. In conclusion, this research demonstrates that the PBC@LDH composite offers a potentially effective amendment for the remediation of U contaminated soil.
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Affiliation(s)
- Peng Lyu
- State Key Laboratory of Nuclear Resources and Environment, East China University of Technology, Nanchang, 330013, China.
| | - Guanghui Wang
- State Key Laboratory of Nuclear Resources and Environment, East China University of Technology, Nanchang, 330013, China; School of Water Resources & Environmental Engineering, East China University of Technology, Nanchang, 330013, China.
| | - Yelin Cao
- College of Urban and Environmental Sciences, Northwest University, Xi'an, 710127, China
| | - Bing Wang
- State Key Laboratory of Nuclear Resources and Environment, East China University of Technology, Nanchang, 330013, China
| | - Nansheng Deng
- School of Resources and Environmental Science, Wuhan University, Wuhan, 430079, China
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Facile synthesis of 2,5-dihydroxy-1,4-benzoquinone glyoxal resin with high capacity and selectivity for uranium recovery in aqueous solution. J Radioanal Nucl Chem 2021. [DOI: 10.1007/s10967-021-07716-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Li D, Yang Y, Zhang P, Liu J, Li T, Yang J. U(VI) adsorption in water by sodium alginate modified Bacillus megaterium. ROYAL SOCIETY OPEN SCIENCE 2021; 8:202098. [PMID: 33972881 PMCID: PMC8074630 DOI: 10.1098/rsos.202098] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Accepted: 01/27/2021] [Indexed: 06/12/2023]
Abstract
The surface of Bacillus megaterium was modified by coating sodium alginate. The modified B. megaterium before and after adsorption were characterized by SEM, FTIR and XPS. The effects of pH, reaction time, initial U(VI) concentration and adsorbent dosage on the adsorption of U(VI) by the modified B. megaterium were studied by batch adsorption experiments. The adsorption process was studied by pseudo-first-order kinetics and pseudo-second-order kinetic models, Langmuir and Freundlich isotherms. The results showed that the maximum adsorption capacity of U(VI) was 74.61 mg g-1 under the conditions of pH 5.0, adsorbent 0.2 g l-1, 30°C and initial U(VI) concentration of 15 mg l-1. The adsorption process accords with pseudo-first-order kinetics and Langmuir isotherm. The adsorption capacity of U(VI) by the modified B. megaterium was still higher than 80% after five times of desorption and reuse experiments. In conclusion, the sodium alginate modified B. megaterium was an ideal material for U(VI) biosorption.
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Affiliation(s)
- Dianxin Li
- School of Mines and Civil Engineering, Liupanshui Normal University, 288 Minghu Road, 553004 Liupanshui, People's Republic of China
| | - Yiqing Yang
- School of Mines and Civil Engineering, Liupanshui Normal University, 288 Minghu Road, 553004 Liupanshui, People's Republic of China
| | - Peng Zhang
- School of Mines and Civil Engineering, Liupanshui Normal University, 288 Minghu Road, 553004 Liupanshui, People's Republic of China
| | - Jiangang Liu
- School of Mines and Civil Engineering, Liupanshui Normal University, 288 Minghu Road, 553004 Liupanshui, People's Republic of China
| | - Tao Li
- School of Mines and Civil Engineering, Liupanshui Normal University, 288 Minghu Road, 553004 Liupanshui, People's Republic of China
| | - Junwei Yang
- School of Mines and Civil Engineering, Liupanshui Normal University, 288 Minghu Road, 553004 Liupanshui, People's Republic of China
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Foster RI, Oh M, Lee K, Kim KW. Pilot-Scale Treatment of a Spent Uranium Catalyst Formally Used in the SOHIO Process: Pilot Plant Verification of the SENSEI Process. ACS OMEGA 2020; 5:10939-10947. [PMID: 32455214 PMCID: PMC7241027 DOI: 10.1021/acsomega.0c00723] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Accepted: 04/28/2020] [Indexed: 06/11/2023]
Abstract
Approximately 7000 drums of waste uranium catalyst are currently present in Korea and require an appropriate treatment and waste management strategy. Recently, one such process has been developed and has proven successful at both laboratory and bench scales. The success of the process has culminated in its verification at a pilot plant scale. The purpose of this paper is to describe the catalyst treatment process and present results obtained from the pilot plant study that may be applicable to other such wastes. The individual unit technologies have been tested and verified, enabling process scale-up to be successfully proven. The final volume reduction of up to 80% has been confirmed with the successful separation, encapsulation, and immobilization of residue wastes, representing a potential cost saving of US$70 million compared to the direct disposal. The inactive silica component of the waste catalyst was purified and confirmed to be free of uranium. All effluents generated during the process were treated and satisfy the appropriate Korean release criteria. The process employs the concept of Selective Extraction of Nonradioactive Species, Encapsulation, and Immobilization, and is therefore introduced as the SENSEI process.
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