期刊
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
卷 81, 期 -, 页码 115-123出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.jiec.2019.08.061
关键词
Lithium ion-sieve; H+-exchanged manganese oxide nanofibers; Li(+)adsorption; Li(+)recovery; Seawater
资金
- National Research Foundation of Korea Grant - Korean Government [NRF-2017R1C1B2011235]
- Korea Institute of Geoscience and Mineral Resources (KIGAM) [19-6825]
- UC-KIMS fund from Korea Institute of Materials Science
Highly porous hydrogen manganese oxide (HMO) nanofibers were fabricated by combining electrospinning, calcination, and ion exchanges, and their lithium (Li) recovery performance was systematically compared to other adsorbent types (i.e., nanoparticles and porous microbeads with equivalent properties). In seawater, the HMO nanofibers exhibited an excellent Li+ adsorption capacity (18.8 mg/g) with greater Li+ selectivity over other adsorbents. These might be attributed to the high number of macropores in the nanofiber, which facilitated the inward diffusion of Li+ and enhanced the accessibility of activated sites. Moreover, the Li+ recovery efficiency of the nanofibers remained approximately 95% after 20 recovery cycles. (C) 2019 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.
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