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- Title
A novel preparation and vapor phase modification of 2D‐open channel bioadsorbent for uranium separation.
- Authors
Ahmad, Mudasir; Ren, Jianquan; Xiu, Tao; Naik, Mehraj‐ud‐din; Zhang, Qiuyu; Zhang, Baoliang
- Abstract
An economical and highly uranium extraction from seawater remains a crucial task for energy sources and environmental safety. Aiming for improving the mass transfer rate of uranium from seawater, a new synthetic strategy was adopted to synthesize two‐dimensional‐open channel microporous bioadsorbent for uranium extraction from seawater. Herein, a vapor phase modification approach was adopted to graft divinylbenzene (DVB), and polyacrylonitrile (AN) onto the surfaces of microporous frameworks via a free radical polymerization method. The postsynthetic functionalization was carried out by hydrothermal process, where amidoxime groups are structure‐directing agents to trap uranium. Furthermore, amidoxime groups not only enhanced hydrophilicity but also adjusts adsorbents pKa. AO‐Fc faces minimum interference of competing ions and achieves a high uranium adsorption capacity of 8.57 ± 0.02 and 409 ± 1 mg/g in seawater and simulated solution. Despite its stable structure, AO‐Fc exhibits a long life span and negligible weight loss revealed AO‐Fc could be applied as a potential adsorbent for radionuclides.
- Subjects
URANIUM; ARTIFICIAL seawater; GASES; MASS transfer; VAPORS; ADSORPTION capacity; ADDITION polymerization
- Publication
AIChE Journal, 2022, Vol 68, Issue 12, p1
- ISSN
0001-1541
- Publication type
Article
- DOI
10.1002/aic.17884