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Sun F, Wang D, Hu Q, Jiao R, Zhang J, Li N, Li J. Hydrolyzed Hydrated Titanium Oxide on Laser-Induced Graphene as CDI Electrodes for U(VI) Adsorption. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:704-713. [PMID: 38109847 DOI: 10.1021/acs.langmuir.3c02927] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2023]
Abstract
Recently, laser-induced graphene (LIG), which has been successfully applied in CDI technology (directly without a complex preparation process), has gained considerable attention. However, the raw LIG electrode with a limited number of active sites exhibits low adsorption efficiency. Therefore, the search for a suitable and effective method to modify LIG to improve its electroadsorption performance is significant. Herein, a very simple titration hydrolysis method is adopted to modify LIG, resulting in a layer of hydrated titanium oxide (HTO) being synthesized on the surface of LIG. The LIG/HTO composites possess a good adsorption property since covering the surface of LIG with a layer of HTO can greatly improve the adsorption capacity of LIG. Moreover, with the addition of HTO, not only the proton transfer ability of LIG has been enhanced but also considerable specific capacitance has been enlarged. As a result, LIG/HTO composite as CDI electrode displays a maximum theoretical adsorption capacity of 1780.89 mg/g at 1.2 V, and the capacitance of LIG/HTO composite material is 4.74 times higher than LIG. During the electroadsorption process, Ti4+ is reduced to Ti3+ under external voltage, and O2- is produced through oxidation. Meanwhile, part of the U (VI) is hydrolyzed into UO3·2H2O under the action of -OH, and some combine with O2- to produce UO4·4H2O.
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Affiliation(s)
- Fuwei Sun
- University of Science and Technology of China, Hefei 230026, PR China
- Institute of Plasma Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China
| | - De Wang
- University of Science and Technology of China, Hefei 230026, PR China
- Institute of Plasma Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China
| | - Qinyan Hu
- University of Science and Technology of China, Hefei 230026, PR China
- Institute of Plasma Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China
| | - Ranran Jiao
- University of Science and Technology of China, Hefei 230026, PR China
- Institute of Plasma Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China
| | - Jianfeng Zhang
- University of Science and Technology of China, Hefei 230026, PR China
- Institute of Plasma Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China
| | - Nian Li
- Institute of Solid State Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, Anhui, China
| | - Jiaxing Li
- University of Science and Technology of China, Hefei 230026, PR China
- Institute of Plasma Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China
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Wang Q, Huang J, Ma C, Hu H, Shen C, He S, Li P. Highly efficient and reusable Mg-Fe layered double hydroxides anchored in attapulgite for uranium uptake from wastewater. CHEMOSPHERE 2023; 321:138055. [PMID: 36758815 DOI: 10.1016/j.chemosphere.2023.138055] [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: 12/17/2022] [Revised: 01/17/2023] [Accepted: 02/03/2023] [Indexed: 06/18/2023]
Abstract
Micro/nano interface adsorption is an effective strategy for separating uranium from aqueous solutions. However, their undesirable capture efficiency and poor cycling stability limit their practical application. In this study, we developed a clay-based micro-adsorbent constructed using attapulgite (ATP) and Mg-Fe layered double hydroxides (Mg-Fe LDHs) for uranium uptake from wastewater. The surface charge affinity between ATP and Mg-Fe LDHs contributed to the robust heterostructure of the ATP@Mg-Fe LDHs adsorbent, thereby enabling a uniform distribution of Mg-Fe LDHs on the ATP surface. Thus, the aggregation behavior of Mg-Fe LDHs was significantly reduced and stellated with an improved dispersion performance of this ATP@Mg-Fe LDHs micro-composite in an aqueous solution. The uranium adsorption capacity was 670.21 mg/g, which is the maximum among previously reported clay-based adsorbents. Notably, a satisfying performance was achieved for the adsorbent stability; the uranium adsorption efficiency remained as high as 97% after eight cycles of adsorption-desorption. The ATP@Mg-Fe LDHs adsorbent for separating UO22+ from water is a promising system that combines efficiency, capacity, selectivity, and reusability, and has potential for scaled-up applications.
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Affiliation(s)
- Qingqing Wang
- School of Environment Science and Spatial Informatics, China University of Mining and Technology, Xuzhou City, Jiangsu, 221008, PR China
| | - Jiu Huang
- School of Environment Science and Spatial Informatics, China University of Mining and Technology, Xuzhou City, Jiangsu, 221008, PR China
| | - Chuanyi Ma
- School of Environment Science and Spatial Informatics, China University of Mining and Technology, Xuzhou City, Jiangsu, 221008, PR China
| | - Hongsu Hu
- School of Environment Science and Spatial Informatics, China University of Mining and Technology, Xuzhou City, Jiangsu, 221008, PR China
| | - Chuanzhe Shen
- School of Environment Science and Spatial Informatics, China University of Mining and Technology, Xuzhou City, Jiangsu, 221008, PR China
| | - Shilong He
- School of Environment Science and Spatial Informatics, China University of Mining and Technology, Xuzhou City, Jiangsu, 221008, PR China.
| | - Peng Li
- School of Environment Science and Spatial Informatics, China University of Mining and Technology, Xuzhou City, Jiangsu, 221008, PR China.
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Chen Y, Li W, Bu H, Yin W, Li P, Fang Z, Wu J. Enhanced Cd(II) immobilization in sediment with zero-valent iron induced by hydrogenotrophic denitrification. JOURNAL OF HAZARDOUS MATERIALS 2023; 441:129833. [PMID: 36084458 DOI: 10.1016/j.jhazmat.2022.129833] [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: 06/21/2022] [Revised: 08/02/2022] [Accepted: 08/21/2022] [Indexed: 06/15/2023]
Abstract
In this study, an integrated system of Fe0 and hydrogenotrophic microbes mediated by nitrate (nitrate-mediated bio-Fe0, NMB-Fe0) was established to remediate Cd(II)-contaminated sediment. Solid phase characterization confirmed that aqueous Cd(II) (Cd(II)aq) was successfully immobilized and enriched on iron surface due to promoted iron corrosion driven by hydrogenotrophic denitrification and subsequent greater biomineral production such as magnetite, lepidocrocite and green rust. Compared to a Cd(II)aq removal of 21.1% in overlying water of the nitrate-mediated Fe0 (NM-Fe0) system, the NMB-Fe0 system obtained a much higher Cd(II)aq removal of 83.1% after 7 d remediation. The leaching test and sequential extraction results also showed that the leachability of Cd(II) decreased by 75.9% while the residual fraction of Cd(II) increased by 185.7% in comparison with untreated sediment. Besides, the Cd(II)aq removal raised with the increase of nitrate concentration and Fe0 dosage, further revealing the promotion effect of nitrate on Cd(II) removal by bio-Fe0. This study highlighted the involvement of bio-denitrification in the remediation of Cd(II)-contaminated sediment by Fe0 and provided a new insight to enhance its reactivity and applicability for Cd(II) immobilization.
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Affiliation(s)
- Ying Chen
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, China
| | - Weiquan Li
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, China
| | - Huaitian Bu
- SINTEF Industry, Department of Materials and Nanotechnology, Forskningsveien 1, 0373 Oslo, Norway
| | - Weizhao Yin
- School of Environment, Jinan University, Guangzhou 510632, China
| | - Ping Li
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, China
| | - Zhanqiang Fang
- School of Environment, South China Normal University, Guangzhou 510006, China
| | - Jinhua Wu
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, China; The Key Laboratory of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, Guangzhou 510006, China; The Key Laboratory of Environmental Protection and Eco-Remediation of Guangdong Regular Higher Education Institutions, Guangzhou 510006, China.
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Negm SH, Abd El-Magied MO, El Maadawy WM, Abdel Aal MM, Abd El Dayem SM, Taher MA, Abd El-Rahem KA, Rashed MN, Cheira MF. Appreciatively Efficient Sorption Achievement to U(VI) from the El Sela Area by ZrO2/Chitosan. SEPARATIONS 2022; 9:311. [DOI: 10.3390/separations9100311] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/01/2023] Open
Abstract
The need to get uranium out of leaching liquid is pushing scientists to come up with new sorbents. This study uses the wet technique to improve the U(VI) sorption properties of ZrO2/chitosan composite sorbent. To validate the synthesis of ZrO2/CS composite with Zirconyl-OH, -NH, and -NH2 for U(VI) binding, XRD, FTIR, SEM, EDX, and BET are used to describe the ZrO2/chitosan wholly formed. To get El Sela leaching liquid, it used 150 g/L H2SO4, 1:4 S:L ratio, 200 rpm agitation speed, four hours of leaching period, and particle size 149–100 µm. In a batch study, the sorption parameters are evaluated at pH 3.5, 50 min of sorbing time, 50 mL of leaching liquid (200 mg/L U(VI)), and 25 °C. The sorption capability is 175 mg/g. Reusing ZrO2/CS for seven cycles with a slight drop in performance is highly efficient, with U(VI) desorption using 0.8 M acid and 75 min of desorption time. The selective U(VI) recovery from El Sela leachate was made possible using ZrO2/CS. Sodium diuranate was precipitated and yielded a yellow cake with a purity level of 94.88%.
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Zheng X, Li S, Liu B, Zhang L, Ma A. A Study on the Mechanism and Kinetics of Ultrasound-Enhanced Sulfuric Acid Leaching for Zinc Extraction from Zinc Oxide Dust. MATERIALS (BASEL, SWITZERLAND) 2022; 15:5969. [PMID: 36079349 PMCID: PMC9456758 DOI: 10.3390/ma15175969] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Revised: 08/18/2022] [Accepted: 08/22/2022] [Indexed: 06/15/2023]
Abstract
As an important secondary zinc resource, large-scale reserves of zinc oxide dust (ZOD) from a wide range of sources is of high comprehensive recycling value. Therefore, an experimental study on ultrasound-enhanced sulfuric acid leaching for zinc extraction from zinc oxide dust was carried out to investigate the effects of various factors such as ultrasonic power, reaction time, sulfuric acid concentration, and liquid-solid ratio on zinc leaching rate. The results show that the zinc leaching rate under ultrasound reached 91.16% at a temperature of 25 °C, ultrasonic power 500 W, sulfuric acid concentration 140 g/L, liquid-solid ratio 5:1, rotating speed 100 r/min, and leaching time 30 min. Compared with the conventional leaching method (leaching rate: 85.36%), the method under ultrasound increased the zinc leaching rate by 5.8%. In a kinetic analysis of the ultrasound-enhanced sulfuric acid leaching of zinc oxide dust, the initial apparent activation energy of the reaction was 6.90 kJ/mol, indicating that the ultrasound-enhanced leaching process was controlled by the mixed solid product layers. Furthermore, the leached residue was characterized by XRD and SEM-EDS, and the results show that, with ultrasonic waves, the encapsulated mineral particles were dissociated, and the dissolution of ZnO was enhanced. Mostly, the zinc in leached residue existed in the forms of ZnFe2O4, Zn2SiO4, and ZnS.
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Affiliation(s)
- Xuemei Zheng
- Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, China
- School of Chemistry and Materials Engineering, Liupanshui Normal University, Liupanshui 553004, China
- Key Laboratory of Unconventional Metallurgy, Kunming University of Science and Technology, Kuming 650093, China
| | - Shiwei Li
- Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, China
- Key Laboratory of Unconventional Metallurgy, Kunming University of Science and Technology, Kuming 650093, China
| | - Bingguo Liu
- Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, China
- Key Laboratory of Unconventional Metallurgy, Kunming University of Science and Technology, Kuming 650093, China
| | - Libo Zhang
- Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, China
- Key Laboratory of Unconventional Metallurgy, Kunming University of Science and Technology, Kuming 650093, China
| | - Aiyuan Ma
- School of Chemistry and Materials Engineering, Liupanshui Normal University, Liupanshui 553004, China
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Ye Y, Fan B, Qin Z, Tang X, Feng Y, Lv M, Miao S, Li H, Chen Y, Chen F, Wang Y. Electrochemical removal and recovery of uranium: Effects of operation conditions, mechanisms, and implications. JOURNAL OF HAZARDOUS MATERIALS 2022; 432:128723. [PMID: 35316632 DOI: 10.1016/j.jhazmat.2022.128723] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2021] [Revised: 02/27/2022] [Accepted: 03/14/2022] [Indexed: 06/14/2023]
Abstract
Removing and recovering uranium (U) from U-mining wastewater would be appealing, which simultaneously reduces the adverse environmental impact of U mining activities and mitigates the depletion of conventional U resources. In this study, we demonstrate the application of a constant-voltage electrochemical (CVE) method for the removal and recovery of U from U-mining wastewater, in an ambient atmosphere. The effects of operation conditions were elucidated in synthetic U-bearing water experiments, and the cell voltage and the ionic strength were found to play important roles in both the U extraction kinetics and the operation cost. The mechanistic studies show that, in synthetic U-bearing water, the CVE U extraction proceeds exclusively via a single-step one-electron reduction mechanism, where pentavalent U is the end product. In real U-mining wastewater, the interference of water matrices led to the disproportionation of the pentavalent U, resulting in the formation of tetravalent and hexavalent U in the extraction products. The U extraction efficacy of the CVE method was evaluated in real U-mining wastewater, and results show that the CVE U extraction method can be efficient with operation costs ranging from $0.55/kgU ~ $64.65/kgU, with varying cell voltages from 1.0 V to 4.0 V, implying its feasibility from the economic perspective.
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Affiliation(s)
- Yin Ye
- School of Ecology and Environment, Northwestern Polytechnical University, 710129 Xi'an, PR China.
| | - Beilei Fan
- School of Ecology and Environment, Northwestern Polytechnical University, 710129 Xi'an, PR China
| | - Zemin Qin
- School of Ecology and Environment, Northwestern Polytechnical University, 710129 Xi'an, PR China
| | - Xin Tang
- School of Ecology and Environment, Northwestern Polytechnical University, 710129 Xi'an, PR China
| | - Yanyue Feng
- Department of Chemistry and Chemical Engineering, Chalmers University of Technology, SE-41296 Gothenburg, Sweden
| | - Miao Lv
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, PR China
| | - Shiyu Miao
- College of Eco-Environmental Engineering, Qinghai University, Xining 810016, PR China
| | - Hongwan Li
- Department of Environmental Engineering Sciences, College of Engineering, University of Florida, USA
| | - Yanlong Chen
- School of Ecology and Environment, Northwestern Polytechnical University, 710129 Xi'an, PR China
| | - Fan Chen
- School of Ecology and Environment, Northwestern Polytechnical University, 710129 Xi'an, PR China.
| | - Yuheng Wang
- School of Ecology and Environment, Northwestern Polytechnical University, 710129 Xi'an, PR China.
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Sakr AK, Al-Hamarneh IF, Gomaa H, Abdel Aal MM, Hanfi MY, Sayyed M, Khandaler MU, Cheira MF. Removal of uranium from nuclear effluent using regenerated bleaching earth steeped in β‒naphthol. Radiat Phys Chem Oxf Engl 1993 2022. [DOI: 10.1016/j.radphyschem.2022.110204] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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Liao T, Feng T, Li J, Hu J, Yang L, Zhang L. Pilot-scale removal of uranium from uranium plant wastewater using industrial iron powder in the ultrasonic field. ANN NUCL ENERGY 2021. [DOI: 10.1016/j.anucene.2020.107876] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Xie H, Zhang L, Li H, Li S, Chen K, Zhang B, Zhou M. Ultrasonic-enhanced replacement of lead in lead hydrometallurgy process from lead leaching solution. ROYAL SOCIETY OPEN SCIENCE 2019; 6:190042. [PMID: 31417712 PMCID: PMC6689618 DOI: 10.1098/rsos.190042] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/17/2019] [Accepted: 06/04/2019] [Indexed: 06/10/2023]
Abstract
In this paper, ultrasonic-enhanced replacement of lead by zinc in lead leaching solution was studied. The effects of reaction time, rotational speed, temperature, concentration of leaching solution and the ratio of the surface area of the zinc plate immersed in the leaching solution to the volume of leaching solution (S : V) were studied under both conventional and ultrasonic conditions. The optimum ultrasonic-assisted replacement conditions were as follows: the S : V of 0.04 (4 cm2 100 ml-1), reaction temperature of 30°C, replacement time of 30 min and the concentration of leaching solution is 5 g l-1, leading to a lead replacement rate of 94.84%. Compared with the conventional replacement process, the reaction time of ultrasonic-enhanced substitution could be reduced to one half, and the demand of reaction temperature, leaching solution concentration and other conditions were decreased accordingly. Introducing ultrasonic into the replacement reaction is promising to reduce the energy consumption in the hydrometallurgical industry also caters to the demands of environment protection.
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Affiliation(s)
- Huimin Xie
- State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming, Yunnan 650093, People's Republic of China
- Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, Yunnan 650093, People's Republic of China
| | - Libo Zhang
- State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming, Yunnan 650093, People's Republic of China
- Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, Yunnan 650093, People's Republic of China
| | - Haoyu Li
- State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming, Yunnan 650093, People's Republic of China
- Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, Yunnan 650093, People's Republic of China
| | - Shiwei Li
- State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming, Yunnan 650093, People's Republic of China
- Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, Yunnan 650093, People's Republic of China
| | - Kaihua Chen
- State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming, Yunnan 650093, People's Republic of China
- Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, Yunnan 650093, People's Republic of China
| | - Bo Zhang
- Zhengzhou Institute of Multipurpose Utilization of Mineral Resources, Chinese Academy of Geological Sciences, Zhengzhou, Henan 450006, People's Republic of China
| | - Mi Zhou
- School of Metallurgy, Northeastern University, Shenyang, Liaoning 110819, People's Republic of China
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The effects of hydrogen peroxide solution and ultrasound on the dissolution of electrodeposited uranium oxide. J Radioanal Nucl Chem 2018. [DOI: 10.1007/s10967-018-6271-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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