1
|
Yang L, Qian Y, Zhang Z, Li T, Lin X, Fu L, Zhou S, Kong XY, Jiang L, Wen L. A marine bacteria-inspired electrochemical regulation for continuous uranium extraction from seawater and salt lake brine. Chem Sci 2024; 15:4538-4546. [PMID: 38516083 PMCID: PMC10952061 DOI: 10.1039/d4sc00011k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2024] [Accepted: 02/19/2024] [Indexed: 03/23/2024] Open
Abstract
Oceans and salt lakes contain vast amounts of uranium. Uranium recovery from natural water not only copes with radioactive pollution in water but also can sustain the fuel supply for nuclear power. The adsorption-assisted electrochemical processes offer a promising route for efficient uranium extraction. However, competitive hydrogen evolution greatly reduces the extraction capacity and the stability of electrode materials with electrocatalytic activity. In this study, we got inspiration from the biomineralisation of marine bacteria under high salinity and biomimetically regulated the electrochemical process to avoid the undesired deposition of metal hydroxides. The uranium uptake capacity can be increased by more than 20% without extra energy input. In natural seawater, the designed membrane electrode exhibits an impressive extraction capacity of 48.04 mg-U per g-COF within 21 days (2.29 mg-U per g-COF per day). Furthermore, in salt lake brine with much higher salinity, the membrane can extract as much uranium as 75.72 mg-U per g-COF after 32 days (2.37 mg-U per g-COF per day). This study provides a general basis for the performance optimisation of uranium capture electrodes, which is beneficial for sustainable access to nuclear energy sources from natural water systems.
Collapse
Affiliation(s)
- Linsen Yang
- CAS Key Laboratory of Bio-inspired Materials and Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences Beijing 100190 P. R. China
| | - Yongchao Qian
- CAS Key Laboratory of Bio-inspired Materials and Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences Beijing 100190 P. R. China
| | - Zhehua Zhang
- CAS Key Laboratory of Bio-inspired Materials and Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences Beijing 100190 P. R. China
- School of Future Technology, University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Tingyang Li
- CAS Key Laboratory of Bio-inspired Materials and Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences Beijing 100190 P. R. China
- School of Future Technology, University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Xiangbin Lin
- CAS Key Laboratory of Bio-inspired Materials and Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences Beijing 100190 P. R. China
- School of Future Technology, University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Lin Fu
- CAS Key Laboratory of Bio-inspired Materials and Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences Beijing 100190 P. R. China
| | - Shengyang Zhou
- CAS Key Laboratory of Bio-inspired Materials and Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences Beijing 100190 P. R. China
| | - Xiang-Yu Kong
- CAS Key Laboratory of Bio-inspired Materials and Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences Beijing 100190 P. R. China
- School of Future Technology, University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Lei Jiang
- CAS Key Laboratory of Bio-inspired Materials and Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences Beijing 100190 P. R. China
- School of Future Technology, University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Liping Wen
- CAS Key Laboratory of Bio-inspired Materials and Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences Beijing 100190 P. R. China
- School of Future Technology, University of Chinese Academy of Sciences Beijing 100049 P. R. China
| |
Collapse
|
2
|
Shabbir S, Yang N, Wang D. Enhanced uranium extraction from seawater: from the viewpoint of kinetics and thermodynamics. Nanoscale 2024; 16:4937-4960. [PMID: 38362657 DOI: 10.1039/d3nr05905g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/17/2024]
Abstract
Uranium extraction from seawater (UES) is recognized as one of the seven pivotal chemical separations with the potential to revolutionize global paradigms. The forthcoming decade is anticipated to witness a surge in UES, driven by escalating energy demands. The oceanic reservoirs, possessing uranium quantities approximately 1000-fold higher than terrestrial mines, present a more sustainable and environmentally benign alternative. Empirical evidence from historical research indicates that adsorption emerges as the most efficacious process for uranium recovery from seawater, considering operational feasibility, cost-effectiveness, and selectivity. Over the years, scientific exploration has led to the development of a plethora of adsorbents with superior adsorption capacity. It would be efficient to design materials with a deep understanding of the adsorption from the perspective of kinetics and thermodynamics. Here, we summarize recent advancements in UES technology and the contemporary challenges encountered in this domain. Furthermore, we present our perspectives on the future trajectory of UES and finally offer our insights into this subject.
Collapse
Affiliation(s)
- Sania Shabbir
- State Key Laboratory of Biochemical Engineering, Key Laboratory of Biopharmaceutical Preparation and Delivery, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, P. R. China.
- University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing 100049, P. R. China
| | - Nailiang Yang
- State Key Laboratory of Biochemical Engineering, Key Laboratory of Biopharmaceutical Preparation and Delivery, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, P. R. China.
- University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing 100049, P. R. China
| | - Dan Wang
- State Key Laboratory of Biochemical Engineering, Key Laboratory of Biopharmaceutical Preparation and Delivery, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, P. R. China.
- University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing 100049, P. R. China
| |
Collapse
|
3
|
Yang L, Qiao B, Zhang S, Yao H, Cai Z, Han Y, Li C, Li Y, Ma S. Intercalation of salicylaldoxime into layered double hydroxide: ultrafast and highly selective uptake of uranium from different water systems via versatile binding modes. J Colloid Interface Sci 2023; 642:623-637. [PMID: 37028169 DOI: 10.1016/j.jcis.2023.03.160] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Revised: 03/14/2023] [Accepted: 03/25/2023] [Indexed: 03/30/2023]
Abstract
We report the first example of MgAl layered double hydroxide intercalated with salicylaldoxime (SA-LDH) which exhibits excellent uranium (U(VI)) capture performance. In U(VI) aqueous solutions, the SA-LDH shows a tremendous maximum U(VI) sorption capacity (qmU) of 502 mg·g-1, surpassing most known sorbents. For the aqueous solution with an initial U(VI) concentration (C0U) of ∼ 10 ppm, ≥99.99 % uptake is achieved in a wide pH range of 3-10. At C0U ∼ 20 ppm, >99 % uptake is reached within only 5 min, and pseudo-second-order kinetics rate constant (k2) of 44.9 g·mg-1·min-1 reaches the record value, placing the SA-LDH amongst the fastest U adsorbing materials reported to date. In contaminated seawater with 35 ppm of U while highly concentrated metal ions of Na+, Mg2+, Ca2+, and K+, the SA-LDH still displays exceptionally high selectivity and ultrafast extraction for UO22+, giving >95 % uptake of U(VI) within 5 min, and the k2 value of 0.308 g·mg-1·min-1 for seawater surpasses most reported values for aqueous solutions. Versatile binding modes toward U by SA-LDH, including complexation (UO22+ with SA- and/or CO32-), ion exchange and precipitation, contribute to the preferable uptake of U at different concentrations. X-ray absorption fine structure (XAFS) analyses demonstrate that one uranyl ion (UO22+) binds to two SA- anions and two H2O molecules forming 8-coordinated configuration. The U coordinates with O atom of the phenolic hydroxyl group and N atom of the -CN-O- group of SA-, forming a stable six-membered ring motif, which endows the fast and robust capture of U. The wonderful uranium trapping ability makes the SA-LDH among the best adsorbent used for uranium extraction from various solution systems including seawater.
Collapse
|
4
|
Wang M, Liu H, Zeng M, Liu Y. Preparation of PAMAM dendrimer modified amidoxime chelating resin and its adsorption for U(VI) in aqueous. INORG CHEM COMMUN 2022; 144:109909. [DOI: 10.1016/j.inoche.2022.109909] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
|
5
|
Wang H, Xu T, Zheng B, Cao M, Gao F, Zhou G, Ma C, Dang J, Yao W, Wu K, Liu T, Yuan Y, Fu Q, Wang N. Cuttlefish ink loaded polyamidoxime adsorbent with excellent photothermal conversion and antibacterial activity for highly efficient uranium capture from natural seawater. J Hazard Mater 2022; 433:128789. [PMID: 35358815 DOI: 10.1016/j.jhazmat.2022.128789] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2022] [Revised: 03/10/2022] [Accepted: 03/23/2022] [Indexed: 06/14/2023]
Abstract
Owing to the abundant uranium reserves in the oceans, the collection of uranium from seawater has aroused the widespread interest. Compared to the uranium extraction from ore, uranium collection from seawater is a more environmentally friendly strategy. The amidoxime (AO) functional group has been considered as one of the most efficient chelating groups for uranium capture. In this work, by drawing upon the photothermal character and antibacterial activity of cuttlefish ink, a cuttlefish ink loaded polyamidoxime (CI-PAO) membrane adsorbent is developed. Under one-sun illumination, the CI-PAO membrane shows a high extraction capacity of 488.76 mg-U/g-Ads in 500 mL 8 ppm uranium spiked simulated seawater, which is 1.24 times higher than PAO membrane. The adsorption rate of CI-PAO membrane is increased by 32.04%. Furthermore, exhibiting roughly 75% bacteriostatic rate in composite marine bacteria, the CI-PAO shows a dramatically antibacterial activity, which effectively prevents the functional sites on the adsorbent surface from being occupied by the biofouling blocks. After immersing in natural seawater for 4 weeks, light-irradiated CI-PAO gave high uranium uptake capacity of 6.17 mg-U/g-Ads. Hence, the CI-PAO membrane adsorbent can be considered as a potential candidate for the practical application for uranium extraction from seawater.
Collapse
Affiliation(s)
- Hui Wang
- State Key Laboratory of Marine Resource Utilization in South China Sea Hainan University, Haikou 570228, China
| | - Taohong Xu
- State Key Laboratory of Marine Resource Utilization in South China Sea Hainan University, Haikou 570228, China
| | - Binhui Zheng
- State Key Laboratory of Marine Resource Utilization in South China Sea Hainan University, Haikou 570228, China
| | - Meng Cao
- State Key Laboratory of Marine Resource Utilization in South China Sea Hainan University, Haikou 570228, China
| | - Feng Gao
- State Key Laboratory of Marine Resource Utilization in South China Sea Hainan University, Haikou 570228, China
| | - Guanbing Zhou
- State Key Laboratory of Marine Resource Utilization in South China Sea Hainan University, Haikou 570228, China
| | - Chong Ma
- State Key Laboratory of Marine Resource Utilization in South China Sea Hainan University, Haikou 570228, China
| | - Jia Dang
- State Key Laboratory of Marine Resource Utilization in South China Sea Hainan University, Haikou 570228, China
| | - Weikun Yao
- State Key Laboratory of Marine Resource Utilization in South China Sea Hainan University, Haikou 570228, China
| | - Kechen Wu
- Fujian Key Laboratory of Functional Marine Sensing Materials Minjiang University, Fuzhou 350108, China
| | - Tao Liu
- State Key Laboratory of Marine Resource Utilization in South China Sea Hainan University, Haikou 570228, China.
| | - Yihui Yuan
- State Key Laboratory of Marine Resource Utilization in South China Sea Hainan University, Haikou 570228, China.
| | - Qiongyao Fu
- Key Laboratory of Tropical Translational Medicine of Ministry of Education, NHC Key Laboratory of Control of Tropical Diseases, School of Tropical Medicine Hainan Medical University, Haikou, Hainan, 571199, China.
| | - Ning Wang
- State Key Laboratory of Marine Resource Utilization in South China Sea Hainan University, Haikou 570228, China.
| |
Collapse
|
6
|
Liu H, Fu T, Mao Y. Metal-Organic Framework-Based Materials for Adsorption and Detection of Uranium(VI) from Aqueous Solution. ACS Omega 2022; 7:14430-14456. [PMID: 35557654 PMCID: PMC9089359 DOI: 10.1021/acsomega.2c00597] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Accepted: 03/31/2022] [Indexed: 05/25/2023]
Abstract
The steady supply of uranium resources and the reduction or elimination of the ecological and human health hazards of wastewater containing uranium make the recovery and detection of uranium in water greatly important. Thus, the development of effective adsorbents and sensors has received growing attention. Metal-organic frameworks (MOFs) possessing fascinating characteristics such as high surface area, high porosity, adjustable pore size, and luminescence have been widely used for either uranium adsorption or sensing. Now pertinent research has transited slowly into simultaneous uranium adsorption and detection. In this review, the progress on the research of MOF-based materials used for both adsorption and detection of uranium in water is first summarized. The adsorption mechanisms between uranium species in aqueous solution and MOF-based materials are elaborated by macroscopic batch experiments combined with microscopic spectral technology. Moreover, the application of MOF-based materials as uranium sensors is focused on their typical structures, sensing mechanisms, and the representative examples. Furthermore, the bifunctional MOF-based materials used for simultaneous detection and adsorption of U(VI) from aqueous solution are introduced. Finally, we also discuss the challenges and perspectives of MOF-based materials for uranium adsorption and detection to provide a useful inspiration and significant reference for further developing better adsorbents and sensors for uranium containment and detection.
Collapse
Affiliation(s)
- Hongjuan Liu
- School
of Nuclear Science and Technology, University
of South China, Hengyang 421001, China
- Department
of Chemistry, Illinois Institute of Technology, 3105 South Dearborn Street, Chicago, Illinois 60616, United States
| | - Tianyu Fu
- School
of Nuclear Science and Technology, University
of South China, Hengyang 421001, China
| | - Yuanbing Mao
- Department
of Chemistry, Illinois Institute of Technology, 3105 South Dearborn Street, Chicago, Illinois 60616, United States
| |
Collapse
|
7
|
Wang J, Sun Y, Zhao X, Chen L, Peng S, Ma C, Duan G, Liu Z, Wang H, Yuan Y, Wang N. A poly(amidoxime)-modified MOF macroporous membrane for high-efficient uranium extraction from seawater. e-Polymers 2022. [DOI: 10.1515/epoly-2022-0038] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Abstract
Although metal–organic frameworks (MOFs) own excellent uranium adsorption capacity but are still difficult to conveniently extract uranium from seawater due to the discrete powder state. In this study, a new MOF-based macroporous membrane has been explored, which can high-efficiently extract uranium through continuously filtering seawater. Through modifying the UiO-66 with poly(amidoxime) (PAO), it can disperse well in a N,N-dimethylformamide solution of graphene oxide and cotton fibers. Then, the as-prepared super-hydrophilic MOF-based macroporous membrane can be fabricated after simple suction filtration. Compared with nonmodified MOFs, this UiO-66@PAO can be dispersed uniformly in the membrane because it can stabilize well in the solution, which have largely enhanced uranium adsorbing capacity owing to the modified PAO. Last but not least, different from powder MOFs, this UiO-66@PAO membrane provides the convenient and continuously uranium adsorbing process. As a consequence, the uranium extraction capacity of this membrane can reach 579 mg·g−1 in 32 ppm U-added simulated seawater for only 24 h. Most importantly, this UiO-66@PAO membrane (100 mg) can remove 80.6% uranyl ions from 5 L seawater after 50 filtering cycles. This study provides a universal method to design and fabricate a new MOF-based adsorbent for high-efficient uranium recovery from seawater.
Collapse
Affiliation(s)
- Jiawen Wang
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University , Haikou 570228 , China
| | - Ye Sun
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University , Haikou 570228 , China
| | - Xuemei Zhao
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University , Haikou 570228 , China
| | - Lin Chen
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University , Haikou 570228 , China
| | - Shuyi Peng
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University , Haikou 570228 , China
| | - Chunxin Ma
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University , Haikou 570228 , China
- Research Institute of Zhejiang University-Taizhou , Taizhou 318000 , China
| | - Gaigai Duan
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Materials Science and Engineering, Nanjing Forestry University , Nanjing 210037 , China
| | - Zhenzhong Liu
- Research Institute of Zhejiang University-Taizhou , Taizhou 318000 , China
| | - Hui Wang
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University , Haikou 570228 , China
| | - Yihui Yuan
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University , Haikou 570228 , China
| | - Ning Wang
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University , Haikou 570228 , China
| |
Collapse
|
8
|
Akl ZF. A comparative investigation of uranium and thorium adsorption behavior on amidoximated copolymeric hydrogel. J Radioanal Nucl Chem. [DOI: 10.1007/s10967-022-08250-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
AbstractThis work focuses on investigating the feasibility of using a crosslinked amidoximated copolymeric hydrogel as a potential adsorbent to recover uranium and thorium ions from aqueous media. The hydrogel was synthesized via gamma-irradiation copolymerization and characterized through FTIR, TGA, and SEM. The medium acidity notably affected the adsorption capacity of both ions. The adsorption data was in line with the pseudo-1st-order equation and the Freundlich isothermal model. The thermodynamics analysis showed that the temperature rise promoted the adsorption capacity. The reusability studies highlighted the good performance of the hydrogel up to five regeneration rounds.
Collapse
|
9
|
Gu H, Ju P, Liu Q, Sun G, Liu J, Chen R, Yu J, Zhu J, Wang J. Constructing an Amino-reinforced amidoxime swelling layer on a Polyacrylonitrile surface for enhanced uranium adsorption from seawater. J Colloid Interface Sci 2021; 610:1015-1026. [PMID: 34865738 DOI: 10.1016/j.jcis.2021.11.152] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2021] [Revised: 11/23/2021] [Accepted: 11/24/2021] [Indexed: 12/25/2022]
Abstract
Polyacrylonitrile (PAN)-based materials have been studied for decades as uranium (U(VI)) adsorbents, because the further products of abundant nitrile groups, amidoxime (AO) groups, show great affinity for U(VI) ions. However, excessive amidoximation could cause the shrinkage of PAN fibers, resulting in decreased adsorption performance. Hence, an amino-reinforced amidoxime (ARAO) swelling layer was constructed on the PAN fiber surface (PAN-NH2-AO) by modification of the strongly hydrophilic amino group to prevent shrinkage. The molecular chains in the ARAO swelling layer would be swelled due to the adsorption of a large amount of water. Simultaneously, U(Ⅵ) ions can penetrate into the ARAO swelling layer with water molecules and coordinate with amino or AO groups, leading to increased adsorption performance. PAN-NH2-AO exhibited maximum U(VI) and water adsorption capacities of 492.61 mg g-1 and 20.32 g g-1 at 25 ℃ with a swelling ratio of 20.73%, respectively. The adsorption capacity of PAN-NH2-AO was 0.312 mg g-1 after a 91-day immersion in Yellow Sea, China. The study of the adsorption thermodynamics and kinetics of PAN-NH2-AO showed that the adsorption process was spontaneous homogeneous chemical adsorption. This paper proposes a novel method to obstruct amidoximation induced shrinkage and to maximize the potential application of PAN-based materials.
Collapse
Affiliation(s)
- Huiquan Gu
- Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, Harbin Engineering University, Harbin 150001, China; College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China
| | - Peihai Ju
- Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, Harbin Engineering University, Harbin 150001, China; College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China; Ganjiang Innovation Academy, Chinese Academy of Sciences, Ganzhou 341000, China
| | - Qi Liu
- Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, Harbin Engineering University, Harbin 150001, China; College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China; Hainan Harbin Institute of Technology Innovation Research Institute Co. Ltd, Hainan 572427, China; Harbin Engineering University Capital Management Co. Ltd, Harbin 150001, China.
| | - Gaohui Sun
- College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China
| | - Jingyuan Liu
- Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, Harbin Engineering University, Harbin 150001, China; College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China
| | - Rongrong Chen
- Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, Harbin Engineering University, Harbin 150001, China; College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China
| | - Jing Yu
- Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, Harbin Engineering University, Harbin 150001, China; College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China
| | - Jiahui Zhu
- Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, Harbin Engineering University, Harbin 150001, China; College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China
| | - Jun Wang
- Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, Harbin Engineering University, Harbin 150001, China; College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China; Harbin Engineering University Capital Management Co. Ltd, Harbin 150001, China.
| |
Collapse
|
10
|
Ju P, Alali KT, Sun G, Zhang H, Liu Q, Liu J, Yu J, Chen R, Wang J. Swollen-layer constructed with polyamine on the surface of nano-polyacrylonitrile cloth used for extract uranium from seawater. Chemosphere 2021; 271:129548. [PMID: 33445024 DOI: 10.1016/j.chemosphere.2021.129548] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Revised: 12/18/2020] [Accepted: 01/01/2021] [Indexed: 06/12/2023]
Abstract
In this study, a swelling layer was constructed on the surface of the nano-polyacrylonitrile (PAN) fiber fabric prepared by electrospinning to enrich uranium (U (VI)) adsorption from seawater. The constructed swelling layer composes of a polyethyleneimine (PEI) containing a huge amount of amino groups and imino groups with strong hydrophilicity. The molecular chain swelled in an aqueous solution by forming a swelling layer on the PAN surface. In addition, p-aminobenzenesulfonic acid (SA) was used as the side chain end group grafted on the PAN surface, the benzene ring as the side chain can hinder the rotation of the PEI chain, thereby increasing the rigidity. The increasing of the rigidity leads to stretch the conformation of the PEI molecular chain, increasing the probability of collision with U (VI), which is beneficial for adsorption. The adsorption capacity of the prepared adsorbent in the adsorption experiment reached 215.25 mg g-1, and the adsorption capacity in the 8 ppm spiked simulated seawater reached 144.5 mg g-1. The adsorption mechanism of U (VI) was analyzed by XPS. The sulfonic acid group in SA as the terminal group and amino group in the swelling layer formed a coordination structure with U (VI). The swelling layer constructed on the surface of polyacrylonitrile fibers is used to effectively extract uranium from seawater.
Collapse
Affiliation(s)
- Peihai Ju
- Key Laboratory of Superlight Material and Surface Technology, Ministry of Education, Harbin Engineering University, 150001, PR China; College of Material Science and Chemical Engineering, Harbin Engineering University, 150001, PR China
| | - Khaled Tawfik Alali
- Key Laboratory of Superlight Material and Surface Technology, Ministry of Education, Harbin Engineering University, 150001, PR China; College of Material Science and Chemical Engineering, Harbin Engineering University, 150001, PR China
| | - Gaohui Sun
- College of Material Science and Chemical Engineering, Harbin Engineering University, 150001, PR China.
| | - Hongsen Zhang
- Key Laboratory of Superlight Material and Surface Technology, Ministry of Education, Harbin Engineering University, 150001, PR China
| | - Qi Liu
- Key Laboratory of Superlight Material and Surface Technology, Ministry of Education, Harbin Engineering University, 150001, PR China; College of Material Science and Chemical Engineering, Harbin Engineering University, 150001, PR China; HIT (Hainan) Military-Civilian Integration Innovation Research Institute Co. Ltd, Hainan, 572427, PR China; Harbin Engineering University Capital Management Co. Ltd., 150001, PR China
| | - Jingyuan Liu
- Key Laboratory of Superlight Material and Surface Technology, Ministry of Education, Harbin Engineering University, 150001, PR China; College of Material Science and Chemical Engineering, Harbin Engineering University, 150001, PR China
| | - Jing Yu
- Key Laboratory of Superlight Material and Surface Technology, Ministry of Education, Harbin Engineering University, 150001, PR China; College of Material Science and Chemical Engineering, Harbin Engineering University, 150001, PR China
| | - Rongrong Chen
- Key Laboratory of Superlight Material and Surface Technology, Ministry of Education, Harbin Engineering University, 150001, PR China; College of Material Science and Chemical Engineering, Harbin Engineering University, 150001, PR China
| | - Jun Wang
- Key Laboratory of Superlight Material and Surface Technology, Ministry of Education, Harbin Engineering University, 150001, PR China; College of Material Science and Chemical Engineering, Harbin Engineering University, 150001, PR China; Harbin Engineering University Capital Management Co. Ltd., 150001, PR China; Institute of Advanced Marine Materials, Harbin Engineering University, 150001, PR China.
| |
Collapse
|
11
|
|
12
|
Wiechert AI, Ladshaw AP, Kuo LJ, Pan HB, Strivens J, Schlafer N, Wood JR, Wai C, Gill G, Yiacoumi S, Tsouris C. Uranium Recovery from Seawater Using Amidoxime-Based Braided Polymers Synthesized from Acrylic Fibers. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.0c01573] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Alexander I. Wiechert
- School of Civil and Environmental Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Austin P. Ladshaw
- School of Civil and Environmental Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Li-Jung Kuo
- Marine Sciences Laboratory, Pacific Northwest National Laboratory, Sequim, Washington 98382, United States
| | - Horng-Bin Pan
- Department of Chemistry, University of Idaho, Moscow, Idaho 83844, United States
- LCW Supercritical Technologies, Moscow, Idaho 83843, United States
| | - Jonathan Strivens
- Marine Sciences Laboratory, Pacific Northwest National Laboratory, Sequim, Washington 98382, United States
| | - Nicholas Schlafer
- Marine Sciences Laboratory, Pacific Northwest National Laboratory, Sequim, Washington 98382, United States
| | - Jordana R. Wood
- Marine Sciences Laboratory, Pacific Northwest National Laboratory, Sequim, Washington 98382, United States
| | - Chien Wai
- Department of Chemistry, University of Idaho, Moscow, Idaho 83844, United States
- LCW Supercritical Technologies, Moscow, Idaho 83843, United States
| | - Gary Gill
- Marine Sciences Laboratory, Pacific Northwest National Laboratory, Sequim, Washington 98382, United States
| | - Sotira Yiacoumi
- School of Civil and Environmental Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Costas Tsouris
- School of Civil and Environmental Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
- Energy and Transportation Science Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| |
Collapse
|
13
|
Al-anber MA, Al-momani IF, Zaitoun MA, Al-qaisi W. Inorganic silica gel functionalized tris(2-aminoethyl)amine moiety for capturing aqueous uranium (VI) ion. J Radioanal Nucl Chem 2020; 325:605-23. [DOI: 10.1007/s10967-020-07270-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
|
14
|
Ju P, Guo H, Bai J, Liu Q, Zhang H, Liu J, Yu J, Chen R, Wang J. Construction of gel-like swollen-layer on Polyacrylonitrile Surface and Its Swelling Behavior and Uranium Adsorption Properties. J Colloid Interface Sci 2020; 576:109-118. [PMID: 32408160 DOI: 10.1016/j.jcis.2020.04.080] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2020] [Revised: 04/09/2020] [Accepted: 04/19/2020] [Indexed: 12/29/2022]
Abstract
In this study, a hyperbranched chelated hydrophilic swollen-layer was constructed on the surface of polyacrylonitrile (PAN) fiber with amino trimethylene phosphoric acid (ATMP) as a terminal group, which applied as an adsorbent for seawater uranium U(VI) extraction. This shows that U(VI) enter the gel-like swollen-layer to form a more complex body structure. The molecular chain conformational extension in the swollen-layer reduces the resistance of the uranyl ion to enter the swollen-layer, which is conducive to the adsorption behavior. The adsorption performance on the U(VI) by the adsorption experiment were found to be consistent with the Langmuir isotherm adsorption model and the pseudo-second-order kinetics, indicating that the adsorption of U(VI) by this material is uniform single-layer chemical adsorption. Ion competition experiments and cyclic adsorption experiments verify the practical application potential of the materials. In the dynamic simulation of seawater adsorption experiments, the adsorption capacity of the adsorbent reached 7.4 mg/g. Studies on the adsorption mechanism have found that a large number of hydroxyl groups in the swollen-layer and ATMP as an end machine have a chelation effect on U(VI).
Collapse
Affiliation(s)
- Peihai Ju
- Key Laboratory of Superlight Material and Surface Technology, Ministry of Education, Harbin Engineering University, 150001, PR China; College of Material Science and Chemical Engineering, Harbin Engineering University, 150001, PR China
| | - Hui Guo
- SD Steel Rizhao Co. Ltd, Rizhao 276800, PR China
| | - Jianwei Bai
- College of Material Science and Chemical Engineering, Harbin Engineering University, 150001, PR China.
| | - Qi Liu
- Key Laboratory of Superlight Material and Surface Technology, Ministry of Education, Harbin Engineering University, 150001, PR China; College of Material Science and Chemical Engineering, Harbin Engineering University, 150001, PR China; HIT (Hainan) Military-Civilian Integration Innovation Research Institute Co. Ltd, Hainan 572427, PR China; Harbin Engineering University Capital Management Co. Ltd., 150001, PR China
| | - Hongsen Zhang
- Key Laboratory of Superlight Material and Surface Technology, Ministry of Education, Harbin Engineering University, 150001, PR China
| | - Jingyuan Liu
- Key Laboratory of Superlight Material and Surface Technology, Ministry of Education, Harbin Engineering University, 150001, PR China; College of Material Science and Chemical Engineering, Harbin Engineering University, 150001, PR China
| | - Jing Yu
- Key Laboratory of Superlight Material and Surface Technology, Ministry of Education, Harbin Engineering University, 150001, PR China; College of Material Science and Chemical Engineering, Harbin Engineering University, 150001, PR China
| | - Rongrong Chen
- Key Laboratory of Superlight Material and Surface Technology, Ministry of Education, Harbin Engineering University, 150001, PR China; College of Material Science and Chemical Engineering, Harbin Engineering University, 150001, PR China
| | - Jun Wang
- Key Laboratory of Superlight Material and Surface Technology, Ministry of Education, Harbin Engineering University, 150001, PR China; College of Material Science and Chemical Engineering, Harbin Engineering University, 150001, PR China; Harbin Engineering University Capital Management Co. Ltd., 150001, PR China; Institute of Advanced Marine Materials, Harbin Engineering University, 150001, PR China.
| |
Collapse
|
15
|
|
16
|
Grabias E, Tarasiuk B, Dołęga A, Majdan M. New uranium( vi) and isothiouronium complexes: synthesis, crystal structure, spectroscopic characterization and a DFT study. CrystEngComm 2020. [DOI: 10.1039/d0ce00746c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
U(vi) and isothiouronium salts create a strong charge-assisted network of hydrogen bonds and ionic interactions.
Collapse
Affiliation(s)
- Ewelina Grabias
- Faculty of Civil Engineering and Architecture
- Lublin University of Technology
- 20-618 Lublin
- Poland
- Faculty of Mathematics, Physics and Computer Science
| | - Bogdan Tarasiuk
- Faculty of Chemistry
- Maria Curie Skłodowska University
- 20-031 Lublin
- Poland
| | - Anna Dołęga
- Gdańsk University of Technology
- Faculty of Chemistry
- Department of Inorganic Chemistry
- 80-233 Gdańsk
- Poland
| | - Marek Majdan
- Faculty of Chemistry
- Maria Curie Skłodowska University
- 20-031 Lublin
- Poland
| |
Collapse
|
17
|
Drysdale JA, Buesseler KO. Uranium adsorption behaviour of amidoximated fibers under coastal ocean conditions. Progress in Nuclear Energy 2020; 119:103170. [DOI: 10.1016/j.pnucene.2019.103170] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
18
|
Jo Y, Kim HK, Yun JI. Complexation of UO 2(CO 3) 34- with Mg 2+ at varying temperatures and its effect on U(vi) speciation in groundwater and seawater. Dalton Trans 2019; 48:14769-14776. [PMID: 31549713 DOI: 10.1039/c9dt03313k] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The ternary alkaline earth metal uranyl tricarbonate complexes, MnUO2(CO3)32n-4 (M = Mg and Ca), have been considered to be the major U(vi) species contributing to uranium mobility in natural water. Although MgUO2(CO3)32- can account for a substantial portion of U(vi) in a Mg2+-rich aqueous system and most processes regarding uranium are subjected to variable temperatures, chemical thermodynamic data for the prediction of the formation of MgUO2(CO3)32- at variable temperatures are still unknown. To fill the knowledge gap in the current chemical thermodynamic database, ultraviolet/visible (UV/Vis) absorption spectroscopy was employed to determine the formation constants (log K') of MgUO2(CO3)32- at varying temperatures of 10-85 °C in 0.5 mol kg-1 NaCl. The formation constants at infinite dilution, log K°, were obtained with specific ion interaction theory (SIT), and an increasing tendency of log K° with temperature was observed. Using calorimetric titration, the endothermic molar enthalpy of reaction (ΔrHm) of Mg2+ complexation with UO2(CO3)34- was determined at 25 °C. According to the chemical thermodynamic data obtained in this work, approximation models for the prediction of the temperature-dependent formation constant at a given temperature were examined and the constant enthalpy approximation with modification to the isoelectric reaction showed a satisfactory agreement with our experimental results. Finally, the effects of temperature on U(vi) speciation in Mg2+-rich groundwater and U(vi) extraction from seawater by amidoxime derivatives were examined. For the first time, this work provides important chemical thermodynamic data of MgUO2(CO3)32n-4 to assess the impact of temperature on U(vi) behaviour in groundwater and seawater.
Collapse
Affiliation(s)
- Yongheum Jo
- Department of Nuclear and Quantum Engineering, KAIST, 291 Daehak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea.
| | | | | |
Collapse
|
19
|
Aziman ES, Mohd Salehuddin AHJ, Ismail AF. Remediation of Thorium (IV) from Wastewater: Current Status and Way Forward. Separation & Purification Reviews 2019. [DOI: 10.1080/15422119.2019.1639519] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Eli Syafiqah Aziman
- Nuclear Science Programme, Faculty of Science and Technology, Universiti Kebangsaan, Bangi, Malaysia
| | | | - Aznan Fazli Ismail
- Nuclear Science Programme, Faculty of Science and Technology, Universiti Kebangsaan, Bangi, Malaysia
- Centre for Frontier Sciences, Faculty of Science and Technology, Universiti Kebangsaan, Bangi, Malaysia
| |
Collapse
|
20
|
Xie Y, Chen C, Ren X, Wang X, Wang H, Wang X. Emerging natural and tailored materials for uranium-contaminated water treatment and environmental remediation. Progress in Materials Science 2019; 103:180-234. [DOI: https:/doi.org/10.1016/j.pmatsci.2019.01.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/25/2023]
|
21
|
Haji MN, Drysdale JA, Buesseler KO, Slocum AH. Results of an Ocean Trial of the Symbiotic Machine for Ocean uRanium Extraction. Environ Sci Technol 2019; 53:2229-2237. [PMID: 30648847 DOI: 10.1021/acs.est.8b05100] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Amidoxime-based adsorbents have become highly promising for seawater uranium extraction. However, current deployment schemes are stand-alone, intermittent operation systems that have significant practical and economic challenges. This paper presents two 1:10 scale prototypes of a Symbiotic Machine for Ocean uRanium Extraction (SMORE) which pairs with an existing offshore structure. This pairing reduces mooring and deployment costs while enabling continuous, autonomous uranium extraction. Utilizing a shell enclosure to decouple the mechanical and chemical requirements of the adsorbent, one design concept prototyped continuously moves the shells through the water while the other keeps them stationary. Water flow in the shells on each prototype was determined using the measurement of radium adsorbed by MnO2 impregnated acrylic fibers contained within each enclosure. The results from a nine-week ocean trial show that while movement of the shells through the water may not have an effect on uranium adsorption by the fibers encased, it could help reduce biofouling if above a certain threshold speed (resulting in increased uptake), while also allowing for the incorporation of design elements to further mitigate biofouling such as bristle brushes and UV lamps. The trace metal uptake by the AI8 adsorbents in this trial also varied greatly from previous marine deployments, suggesting that uranium uptake may depend greatly upon the seawater concentrations of other elements such as vanadium and copper. The results from this study will be used to inform future work on the seawater uranium production cost from a full-scale SMORE system.
Collapse
Affiliation(s)
- Maha N Haji
- Department of Mechanical Engineering , Massachusetts Institute of Technology , Cambridge , Massachusetts United States
| | - Jessica A Drysdale
- Department of Marine Chemistry & Geochemistry , Woods Hole Oceanographic Institution , Woods Hole , Massachusetts United States
| | - Ken O Buesseler
- Department of Marine Chemistry & Geochemistry , Woods Hole Oceanographic Institution , Woods Hole , Massachusetts United States
| | - Alexander H Slocum
- Department of Mechanical Engineering , Massachusetts Institute of Technology , Cambridge , Massachusetts United States
| |
Collapse
|
22
|
Ma F, Dong B, Gui Y, Cao M, Han L, Jiao C, Lv H, Hou J, Xue Y. Adsorption of Low-Concentration Uranyl Ion by Amidoxime Polyacrylonitrile Fibers. Ind Eng Chem Res 2018. [DOI: 10.1021/acs.iecr.8b03509] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Fuqiu Ma
- Fundamental Science on Nuclear Safety and Simulation Technology Laboratory, College of Nuclear Science and Technology, Harbin Engineering University, Harbin 150001, P. R. China
| | - Boran Dong
- Fundamental Science on Nuclear Safety and Simulation Technology Laboratory, College of Nuclear Science and Technology, Harbin Engineering University, Harbin 150001, P. R. China
| | - Yunyang Gui
- Fundamental Science on Nuclear Safety and Simulation Technology Laboratory, College of Nuclear Science and Technology, Harbin Engineering University, Harbin 150001, P. R. China
| | - Meng Cao
- Fundamental Science on Nuclear Safety and Simulation Technology Laboratory, College of Nuclear Science and Technology, Harbin Engineering University, Harbin 150001, P. R. China
| | - Lei Han
- Fundamental Science on Nuclear Safety and Simulation Technology Laboratory, College of Nuclear Science and Technology, Harbin Engineering University, Harbin 150001, P. R. China
| | - Caishan Jiao
- Fundamental Science on Nuclear Safety and Simulation Technology Laboratory, College of Nuclear Science and Technology, Harbin Engineering University, Harbin 150001, P. R. China
| | - Huitao Lv
- Fundamental Science on Nuclear Safety and Simulation Technology Laboratory, College of Nuclear Science and Technology, Harbin Engineering University, Harbin 150001, P. R. China
| | - Junjun Hou
- Fundamental Science on Nuclear Safety and Simulation Technology Laboratory, College of Nuclear Science and Technology, Harbin Engineering University, Harbin 150001, P. R. China
| | - Yun Xue
- Fundamental Science on Nuclear Safety and Simulation Technology Laboratory, College of Nuclear Science and Technology, Harbin Engineering University, Harbin 150001, P. R. China
| |
Collapse
|
23
|
Wiechert AI, Ladshaw AP, Gill GA, Wood JR, Yiacoumi S, Tsouris C. Uranium Resource Recovery from Desalination Plant Feed and Reject Water Using Amidoxime Functionalized Adsorbent. Ind Eng Chem Res 2018. [DOI: 10.1021/acs.iecr.8b04673] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
| | - Austin P. Ladshaw
- Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Gary A. Gill
- Marine Sciences Laboratory, Pacific Northwest National Laboratory, Sequim, Washington 98382, United States
| | - Jordana R. Wood
- Marine Sciences Laboratory, Pacific Northwest National Laboratory, Sequim, Washington 98382, United States
| | - Sotira Yiacoumi
- Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Costas Tsouris
- Georgia Institute of Technology, Atlanta, Georgia 30332, United States
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| |
Collapse
|
24
|
Affiliation(s)
- Maha N. Haji
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Jorge Gonzalez
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Jessica A. Drysdale
- Department of Marine Chemistry & Geochemistry, Woods Hole Oceanographic Institution, Woods Hole, Massachusetts 02543, United States
| | - Ken O. Buesseler
- Department of Marine Chemistry & Geochemistry, Woods Hole Oceanographic Institution, Woods Hole, Massachusetts 02543, United States
| | - Alexander H. Slocum
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| |
Collapse
|
25
|
Wiechert AI, Liao WP, Hong E, Halbert CE, Yiacoumi S, Saito T, Tsouris C. Influence of hydrophilic groups and metal-ion adsorption on polymer-chain conformation of amidoxime-based uranium adsorbents. J Colloid Interface Sci 2018; 524:399-408. [PMID: 29674284 DOI: 10.1016/j.jcis.2018.04.021] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2017] [Revised: 03/30/2018] [Accepted: 04/05/2018] [Indexed: 10/17/2022]
Abstract
This study focuses on the influence of hydrophilic groups and metal-ion loading on adsorbent polymer conformation, which controls access to adsorption sites and may limit adsorption capacity. Gaining a better understanding of the factors that influence conformation may yield higher-capacity adsorbents. Polyamidoxime (PAO), deuterated-PAO polyacrylic acid diblock copolymers (d-PAO-b-PAA), and randomly configured copolymers (PAO-co-PAA) were synthesized and characterized by neutron reflectometry in air and D2O. For d-PAO-b-PAA, characterization was also performed after alkali conditioning and in simulated seawater. PAO and PAO-co-PAA, with similar molecular weight and grafting density, extended from 95-Å thickness in air to 180 and 280-Å in D2O, respectively. This result suggests that polymer swelling may cause the additional adsorption capacity observed when polymer hydrophilicity increases. Two d-PAO-b-PAA samples, A and B, with a d-PAO thickness of 55-Å swelled to 110-Å and 140-Å, respectively, with an overall thickness increase of ∼160% in D2O. After alkali conditioning, molecular interactions increased the density of PAA near the PAO-PAA interface, while the d-PAO thickness only decreased by ∼10 Å. The d-PAO thickness of both samples declined to ∼90-Å after adsorption in simulated seawater due to polymer-chain crosslinking. These results are expected to aid in improving adsorbent synthesis to increase uranium capacity.
Collapse
Affiliation(s)
- Alexander I Wiechert
- School of Civil and Environmental Engineering, Georgia Institute of Technology, Atlanta, GA 30332-0373, USA
| | - Wei-Po Liao
- Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
| | - Eunice Hong
- Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
| | | | - Sotira Yiacoumi
- School of Civil and Environmental Engineering, Georgia Institute of Technology, Atlanta, GA 30332-0373, USA
| | - Tomonori Saito
- Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA.
| | - Costas Tsouris
- School of Civil and Environmental Engineering, Georgia Institute of Technology, Atlanta, GA 30332-0373, USA; Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA.
| |
Collapse
|