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Ye X, Chi R, Wu Z, Chen J, Lv Y, Lin C, Liu Y, Luo W. A biomass fiber adsorbent grafted with phosphate/amidoxime for efficient extraction of uranium from seawater by synergistic effect. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 337:117658. [PMID: 37011477 DOI: 10.1016/j.jenvman.2023.117658] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2022] [Revised: 02/05/2023] [Accepted: 03/01/2023] [Indexed: 06/19/2023]
Abstract
There are approximately 4 billion tons of uranium in the ocean, which is unmatched by the surface. Nevertheless, it's very challenging to extract uranium from the ocean due to the exceedingly low concentration of uranium in the ocean (about 3.3 μg L-1) as well as high salinity level. Current methods are often limited by selectivity, sustainability, economics, etc. Herein, phosphoric acid group and amidoxime group were grafted to skin collagen fibers through " initiated access" to design a new uranium extraction material, abbreviated as CGPA. Through laboratory simulation experiments, it is concluded that the maximum adsorption capacity of CGPA for uranium reaches 263.86 mg g-1. It has high adsorption, selectivity, and reusability for uranium. In the actual seawater extraction experiment, CGPA obtained 29.64 μg of uranium after extracting 10.0 L of seawater, and the extraction rate was 90.1%. The adsorbent has excellent effects in kinetics, selectivity, extraction capacity, renewability, etc. In the extraction of uranium from seawater, and is an economically feasible and industrially expandable adsorbent.
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Affiliation(s)
- Xiaoxia Ye
- Fujian Provincial Engineering Research Center of Rural Waste Recycling Technology, College of Environmental and Safety Engineering, Fuzhou University, Fuzhou, 350108, PR China.
| | - Ruiyang Chi
- Fujian Provincial Engineering Research Center of Rural Waste Recycling Technology, College of Environmental and Safety Engineering, Fuzhou University, Fuzhou, 350108, PR China.
| | - Zhihao Wu
- Fujian Provincial Engineering Research Center of Rural Waste Recycling Technology, College of Environmental and Safety Engineering, Fuzhou University, Fuzhou, 350108, PR China.
| | - Jinteng Chen
- Fujian Provincial Engineering Research Center of Rural Waste Recycling Technology, College of Environmental and Safety Engineering, Fuzhou University, Fuzhou, 350108, PR China.
| | - Yuancai Lv
- Fujian Provincial Engineering Research Center of Rural Waste Recycling Technology, College of Environmental and Safety Engineering, Fuzhou University, Fuzhou, 350108, PR China.
| | - Chunxiang Lin
- Fujian Provincial Engineering Research Center of Rural Waste Recycling Technology, College of Environmental and Safety Engineering, Fuzhou University, Fuzhou, 350108, PR China.
| | - Yifan Liu
- Fujian Provincial Engineering Research Center of Rural Waste Recycling Technology, College of Environmental and Safety Engineering, Fuzhou University, Fuzhou, 350108, PR China.
| | - Wei Luo
- Department of Biomass Chemistry and Engineering, Sichuan University, Chengdu, 610065, PR China.
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Chen X, Wang Y, Xia H, Ren Q, Li Y, Xu L, Xie C, Wang Y. "One-can" strategy for the synthesis of hydrothermal biochar modified with phosphate groups and efficient removal of uranium(VI). JOURNAL OF ENVIRONMENTAL RADIOACTIVITY 2023; 263:107182. [PMID: 37094506 DOI: 10.1016/j.jenvrad.2023.107182] [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: 11/21/2022] [Revised: 03/08/2023] [Accepted: 04/10/2023] [Indexed: 05/03/2023]
Abstract
Significant selectivity, reasonable surface modification and increased structural porosity were three key factors to improve the competitiveness of biochar in the adsorption field. In this study, a hydrothermal bamboo-derived biochar modified with phosphate groups (HPBC) was synthesized using "one-can" strategy. BET showed that this method could effectively increase the specific surface area (137.32 m2 g-1) and simulation of wastewater experiments indicated HPBC had an excellent selectivity for U(VI) (70.35%), which was conducive to removal of U(VI) in real and complex environments. The accurate matchings of pseudo-second-order kinetic model, thermodynamic model and Langmuir isotherm showed that at 298 K, pH = 4.0, the adsorption process dominated by chemical complexation and monolayer adsorption was spontaneous, endothermic and disordered. Saturated adsorption capacity of HPBC could reach 781.02 mg g-1 within 2 h. The introduction of phosphoric acid and citric acid by "one-can" method not only provided abundant -PO4 to assist adsorption, but also activated oxygen-containing groups on the surface of the bamboo matrix. Results showed that adsorption mechanism of U(VI) by HPBC included electrostatic action and chemical complexation involving P-O, PO and ample oxygen-containing functional groups. Therefore, HPBC with high phosphorus content, outstanding adsorption performance, excellent regeneration, remarkable selectivity and green value provided a novel solution for the field of radioactive wastewater treatment.
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Affiliation(s)
- Xinchen Chen
- School of Nuclear Science and Engineering, East China University of Technology, Nanchang, 330013, Jiangxi, China
| | - Yang Wang
- School of Nuclear Science and Engineering, East China University of Technology, Nanchang, 330013, Jiangxi, China
| | - Hongtao Xia
- School of Nuclear Science and Engineering, East China University of Technology, Nanchang, 330013, Jiangxi, China
| | - Qi Ren
- School of Nuclear Science and Engineering, East China University of Technology, Nanchang, 330013, Jiangxi, China
| | - Yang Li
- School of Nuclear Science and Engineering, East China University of Technology, Nanchang, 330013, Jiangxi, China
| | - Lejin Xu
- School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan, 430074, Hubei, China
| | - Chuting Xie
- School of Architecture & Urban Planning, Huazhong University of Science and Technology, Wuhan, 430074, Hubei, China
| | - Yun Wang
- School of Nuclear Science and Engineering, East China University of Technology, Nanchang, 330013, Jiangxi, China.
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Zhang X, Li L, Shao D. Uptake of uranium from wastewater by polyoxometalate modified graphene oxide. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.122154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Wang Q, Yang L, Yao H, Wu Z, Liu R, Ma S. Layered double hydroxide intercalated with dimethylglyoxime for highly selective and ultrafast uptake of uranium from seawater. Dalton Trans 2022; 51:13046-13054. [PMID: 35971915 DOI: 10.1039/d2dt02381d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this study, we demonstrate the first example of a MgAl layered double hydroxide intercalated by a ketoxime compound (dimethylglyoxime, DMG), that is, MgAl-DMG-LDH (abbr. DMG-LDH), which exhibits excellent capture of uranium (U(VI)) both at high (ppm) and low (ppb) concentrations. The as-formed DMG-LDH shows an enormous maximum U(VI) sorption capacity (qUm) of 380 mg g-1 and an exceptionally rapid sorption rate (k2 = 2.97 g mg-1 min-1), reaching a high uptake of 99.14% within 5 min. For natural and contaminated seawater with high concentrations of Na+, Ca2+, Mg2+ and K+ concomitant cations, the DMG-LDH still can trap ∼85% U, displaying highly effective sorption toward U. The interaction mechanism between UO22+ and DMG2- provides an important reference for the development of highly effective capture of U(VI) by ketoxime materials. The DMG-LDH is currently the best ketoxime material for uranium extraction from nuclear waste and seawater.
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Affiliation(s)
- Qian Wang
- Beijing Key Laboratory of Energy Conversion and Storage Materials, College of Chemistry, Beijing Normal University, Beijing 100875, China.
| | - Lixiao Yang
- Beijing Key Laboratory of Energy Conversion and Storage Materials, College of Chemistry, Beijing Normal University, Beijing 100875, China.
| | - Huiqin Yao
- School of Basic Medical Sciences, Ningxia Medical University, Yinchuan 750004, China.
| | - Zhenglong Wu
- Analytical and Testing Center, Beijing Normal University, Beijing 100875, China.
| | - Rong Liu
- Analytical and Testing Center, Beijing Normal University, Beijing 100875, China.
| | - Shulan Ma
- Beijing Key Laboratory of Energy Conversion and Storage Materials, College of Chemistry, Beijing Normal University, Beijing 100875, China.
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