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Fe3O4-loaded Ion Exchange Resin for Chromatographic Separation of Boron Isotopes: Experiment and Numerical Simulation
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  • Guo Xianghai,
  • Qingfeng Wang,
  • Tao Chen,
  • Peng Bai,
  • Jiafei Lyu
Guo Xianghai
Tianjin University
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Qingfeng Wang
Tianjin University
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Tao Chen
Tianjin University
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Peng Bai
Tianjin University
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Jiafei Lyu
Tianjin University
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Abstract

Fe3O4-loaded ion exchange resin composites (Fe3O4@Resin) were optimally constructed through ion exchange and co-precipitation of Fe2+ and Fe3+ on strong acid ion exchange resin. The as-synthesized Fe3O4@Resin composite was sophisticatedly characterized and investigated for 10B/11B separation including effect of pH, kinetics and isotherms through batch adsorption experiment which can be well described by pseudo-second order kinetics and Langmuir model. In the chromatographic column packed with Fe3O4@Resin, 10B was selectively retained with a high dynamic separation factor of 1.312. Considering the consistency between simulated and experimental breakthrough curves within Fe3O4@Resin packed column, chromatographic 10B/11B separation performance was simulated under various conditions which were further optimized by response surface methodology method. Consequently, the annual yield of 10B reached the maximum of 612 g with feed concentration of 7.567 g·L−1, flow rate of 38.57 mL·min−1, the length of column of 45 cm. In addition, five-cycle adsorption/regeneration experiments indicated its merit of reusability.

Peer review status:UNDER REVIEW

12 Aug 2020Submitted to AIChE Journal
31 Aug 2020Assigned to Editor
31 Aug 2020Submission Checks Completed
16 Sep 2020Reviewer(s) Assigned