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Zhang P, Chen Y, Chen Y, Guo Q, Liu Y, Yang Y, Cao Q, Chong H, Lin M. Functionalized hierarchically porous carbon doped boron nitride for multipurpose and efficient treatment of radioactive sewage. Sci Total Environ 2023; 866:161378. [PMID: 36610624 DOI: 10.1016/j.scitotenv.2022.161378] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2022] [Revised: 12/16/2022] [Accepted: 12/31/2022] [Indexed: 06/17/2023]
Abstract
In order to recycle Uranium (U) for the sustainable development of nuclear energy, diamide bipyridine (DABP) modified hierarchically porous carbon doped boron nitride (BCN-DABP) was synthesized as an adsorbent for the multipurpose removal of U. BCN-DABP displayed good adsorption performance for U in both weakly and highly acidic solutions. The hierarchically porous structure endowed BCN-DABP with ultrafast adsorption kinetics, and adsorption reached equilibrium within 180.0 and 0.5 min under pH = 4.0 and 2.00 mol L-1 HNO3, respectively. Moreover, combination of adsorption isotherm studies and DFT calculations showed that BCN-DABP possessed high adsorption capacities for U and displayed different adsorption performance under different conditions. BCN-DABP adsorbed UO22+ by chelation and electrostatic attraction under pH 4.0 and 2.00 mol L-1 HNO3, the maximum adsorption capacity under two conditions reached 818.7 and 1296.7 mg g-1, respectively. As a result, BCN-DABP is expected to be used for the rapid and efficient removal of U in various kinds of contaminated water. Furthermore, excellent salinity tolerance, good adsorption selectivity, and outstanding radiation resistance also endowed BCN-DABP with great practical potential for removing U in radioactive contaminated water as well as high level liquid waste.
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Affiliation(s)
- Peng Zhang
- School of Nuclear Science and Technology, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Yawen Chen
- Beijing National Laboratory for Molecular Sciences, Fundamental Science Laboratory on Radiochemistry & Radiation Chemistry, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Yizhi Chen
- School of Nuclear Science and Technology, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Qiqi Guo
- School of Nuclear Science and Technology, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Yusen Liu
- School of Nuclear Science and Technology, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Yu Yang
- School of Nuclear Science and Technology, University of Science and Technology of China, Hefei, Anhui 230026, China; Reactor Operation and Application Research Sub-Institute, Nuclear Power Institute of China, Chengdu, Sichuan 610041, China
| | - Qi Cao
- Reactor Operation and Application Research Sub-Institute, Nuclear Power Institute of China, Chengdu, Sichuan 610041, China
| | - Hanbao Chong
- Instruments Center for Physical Science, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Mingzhang Lin
- School of Nuclear Science and Technology, University of Science and Technology of China, Hefei, Anhui 230026, China.
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