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Yu Y, Lai Y, Zhang Z, Yang Y. A lithium ore grade measurement based on the neutron & X-ray bi-modal imaging system. Appl Radiat Isot 2024; 210:111354. [PMID: 38749238 DOI: 10.1016/j.apradiso.2024.111354] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Revised: 05/05/2024] [Accepted: 05/09/2024] [Indexed: 06/13/2024]
Abstract
The grades of the minerals significantly affects the energy consumption and chemical pollution along with the beneficiation process for extracting lithium element from the ores. Based on the large neutrons' macro cross section of the Li2O cluster inside the ores, the grades of lithium ores could be analyzed by the thermal neutron penetrating information. In this work, a bimodal imaging method, which utilizes both the information of penetrating neutrons and X-rays delivered by the same electron linear accelerator driven photoneutron system, was proposed to investigate the lithium concentration of each ore. A linearity R-square value of 0.991 between the results obtained with this method and those from the chemical method has been achieved. The average error in lithium concentration estimation is approximately 0.2 wt percent (wt%). The underlying principles and the experimental results will be elaborated on in this study.
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Affiliation(s)
- Yangyi Yu
- Department of Engineering Physics, Tsinghua University, Qinghuayuan No. 1, Beijing, 100084, PR China; Key Laboratory of Particle & Radiation Imaging (Tsinghua University), Ministry of Education, Qinghuayuan No. 1, Beijing, 100084, PR China
| | - Yuxuan Lai
- Department of Engineering Physics, Tsinghua University, Qinghuayuan No. 1, Beijing, 100084, PR China; Key Laboratory of Particle & Radiation Imaging (Tsinghua University), Ministry of Education, Qinghuayuan No. 1, Beijing, 100084, PR China
| | - Zhi Zhang
- Department of Engineering Physics, Tsinghua University, Qinghuayuan No. 1, Beijing, 100084, PR China; Key Laboratory of Particle & Radiation Imaging (Tsinghua University), Ministry of Education, Qinghuayuan No. 1, Beijing, 100084, PR China
| | - Yigang Yang
- Department of Engineering Physics, Tsinghua University, Qinghuayuan No. 1, Beijing, 100084, PR China; Key Laboratory of Particle & Radiation Imaging (Tsinghua University), Ministry of Education, Qinghuayuan No. 1, Beijing, 100084, PR China.
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Huang L, Wu H, Ding L, Caro J, Wang H. Shearing Liquid-Crystalline MXene into Lamellar Membranes with Super-Aligned Nanochannels for Ion Sieving. Angew Chem Int Ed Engl 2024; 63:e202314638. [PMID: 38009764 DOI: 10.1002/anie.202314638] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Revised: 11/22/2023] [Accepted: 11/27/2023] [Indexed: 11/29/2023]
Abstract
Ion-selective membranes are crucial in various chemical and physiological processes. Numerous studies have demonstrated progress in separating monovalent/multivalent ions, but efficient monovalent/monovalent ion sieving remains a great challenge due to their same valence and similar radii. Here, this work reports a two-dimensional (2D) MXene membrane with super-aligned slit-shaped nanochannels with ultrahigh monovalent ion selectivity. The MXene membrane is prepared by applying shear forces to a liquid-crystalline (LC) MXene dispersion, which is conducive to the highly-ordered stacking of the MXene nanosheets. The obtained LC MXene membrane (LCMM) exhibits ultrahigh selectivities toward Li+ /Na+ , Li+ /K+ , and Li+ /Rb+ separation (≈45, ≈49, and ≈59), combined with a fast Li+ transport with a permeation rate of ≈0.35 mol m-2 h-1 , outperforming the state-of-the-art membranes. Theoretical calculations indicate that in MXene nanochannels, the hydrated Li+ with a tetrahedral shape has the smallest diameter among the monovalent ions, contributing to the highest mobility. Besides, the weakest interaction is found between hydrated Li+ and MXene channels which also contributes to the ultrafast permeation of Li+ through the super-aligned MXene channels. This work demonstrates the capability of MXene membranes in monovalent ion separation, which also provides a facile and general strategy to fabricate lamellar membranes in a large scale.
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Affiliation(s)
- Lingzhi Huang
- Beijing Key Laboratory for Membrane Materials and Engineering, Department of Chemical Engineering, Tsinghua University, Beijing, 100084, China
| | - Haoyu Wu
- Beijing Key Laboratory for Membrane Materials and Engineering, Department of Chemical Engineering, Tsinghua University, Beijing, 100084, China
| | - Li Ding
- Beijing Key Laboratory for Membrane Materials and Engineering, Department of Chemical Engineering, Tsinghua University, Beijing, 100084, China
| | - Jürgen Caro
- Institute of Physical Chemistry and Electrochemistry, Leibniz University Hannover, Callinstrasse 3 A, 30167, Hannover, Deutschland
| | - Haihui Wang
- Beijing Key Laboratory for Membrane Materials and Engineering, Department of Chemical Engineering, Tsinghua University, Beijing, 100084, China
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Feng Z, Liu C, Tang B, Yang X, Jiang W, Wang P, Tang X, Wang H, Zeng X, Zeng G. Construction of a Two-Dimensional GO/Ti 3C 2T X Composite Membrane and Investigation of Mg 2+/Li + Separation Performance. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:2777. [PMID: 37887928 PMCID: PMC10609999 DOI: 10.3390/nano13202777] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Revised: 10/09/2023] [Accepted: 10/14/2023] [Indexed: 10/28/2023]
Abstract
Graphene oxide (GO) two-dimensional (2D) membranes with unique layer structures and tunable layer spacing have special advantages and great potential in the field of water treatment. However, GO membranes face the issues of weak anti-swelling ability as well as poor permeability. We prepared GO/Ti3C2TX 2D composite membranes with 2D/2D structures by intercalating Ti3C2TX nanosheets with slightly smaller sizes into GO membranes. Ti3C2TX intercalation can effectively expand the layer spacing of GO, thereby substantially enhancing the flux of the composite membrane (2.82 to 6.35 L·m-2·h-1). Moreover, the GO/Ti3C2TX composite membrane exhibited a good Mg2+/Li+ separation capability. For the simulated brine, the separation factor of M2 was 3.81, and the salt solution flux was as high as 5.26 L·m-2·h-1. Meanwhile, the incorporation of Ti3C2TX nanosheets significantly improved the stability of GO/Ti3C2TX membranes in different pH environments. This study provides a unique insight into the preparation of highly permeable and ion-selective GO membranes.
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Affiliation(s)
- Zhenhua Feng
- Evaluation and Utilization of Strategic Rare Metals and Rare Earth Resource Key Laboratory of Sichuan Province, Chengdu Mineral Resources Supervision and Testing Center, Ministry of Land and Resources, Chengdu 610081, China; (Z.F.); (B.T.); (W.J.)
- Chengdu Analytical & Testing Center for Mineral and Rocks, Sichuan Bureau of Geology and Mineral Resources, Chengdu 610081, China
| | - Chengwen Liu
- College of Materials and Chemistry & Chemical Engineering, Chengdu University of Technology, Chengdu 610059, China; (C.L.); (H.W.); (X.Z.)
| | - Binbin Tang
- Evaluation and Utilization of Strategic Rare Metals and Rare Earth Resource Key Laboratory of Sichuan Province, Chengdu Mineral Resources Supervision and Testing Center, Ministry of Land and Resources, Chengdu 610081, China; (Z.F.); (B.T.); (W.J.)
- Chengdu Analytical & Testing Center for Mineral and Rocks, Sichuan Bureau of Geology and Mineral Resources, Chengdu 610081, China
| | - Xiaojun Yang
- Evaluation and Utilization of Strategic Rare Metals and Rare Earth Resource Key Laboratory of Sichuan Province, Chengdu Mineral Resources Supervision and Testing Center, Ministry of Land and Resources, Chengdu 610081, China; (Z.F.); (B.T.); (W.J.)
- Chengdu Analytical & Testing Center for Mineral and Rocks, Sichuan Bureau of Geology and Mineral Resources, Chengdu 610081, China
| | - Wenjie Jiang
- Evaluation and Utilization of Strategic Rare Metals and Rare Earth Resource Key Laboratory of Sichuan Province, Chengdu Mineral Resources Supervision and Testing Center, Ministry of Land and Resources, Chengdu 610081, China; (Z.F.); (B.T.); (W.J.)
- Chengdu Analytical & Testing Center for Mineral and Rocks, Sichuan Bureau of Geology and Mineral Resources, Chengdu 610081, China
| | - Peng Wang
- Sichuan Salt Geology Drilling Team (Sichuan Mineral Salt Mining Engineering Technology Research Center), Zigong 643000, China; (P.W.); (X.T.)
| | - Xianjun Tang
- Sichuan Salt Geology Drilling Team (Sichuan Mineral Salt Mining Engineering Technology Research Center), Zigong 643000, China; (P.W.); (X.T.)
| | - Hongshan Wang
- College of Materials and Chemistry & Chemical Engineering, Chengdu University of Technology, Chengdu 610059, China; (C.L.); (H.W.); (X.Z.)
| | - Xiangdong Zeng
- College of Materials and Chemistry & Chemical Engineering, Chengdu University of Technology, Chengdu 610059, China; (C.L.); (H.W.); (X.Z.)
| | - Guangyong Zeng
- College of Materials and Chemistry & Chemical Engineering, Chengdu University of Technology, Chengdu 610059, China; (C.L.); (H.W.); (X.Z.)
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An environmentally friendly improved chlorination roasting process for lepidolite with reduced chlorinating agent dosage and chlorinated waste gas emission. Sep Purif Technol 2023. [DOI: 10.1016/j.seppur.2023.123173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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