期刊
JOURNAL OF MEMBRANE SCIENCE
卷 629, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.memsci.2021.119285
关键词
Nanofiltration; Water activation; Antibiotics separation; Antifouling
资金
- National Natural Science Foundation of China [21808060]
- Fundamental Research Funds for the Central Universities [222201814009, JKA012011001, JKA012011017]
- Scientific Research Project of Baoteel [R20EC13020]
The study enhanced the performance of NF membranes by water activation before microwave heating, overcoming the trade-off between permeability and selectivity. The activated NF membrane exhibited higher permeance and fouling resistance.
Separation performance of nanofiltration (NF) membranes is constrained by the trade-off between permeability and selectivity. Herein, a facile and environmental friendly water activation before microwave heating was performed to improve the performance of NF membranes and overcome this trade-off. The water activation before microwave heating facilitated the hydrolysis of acyl chloride, resulting in a loose polyamide layer with enhanced hydrophilicity and surface charge. The activated NF membrane showed a permeance of 29.9 L m-2 h-1 bar-1, which is almost 2 times higher than the control. The membrane possesses a Na2SO4 rejection of 96.8% and high selectivity to antibiotics and NaCl. At the meantime, the fouling resistance to model foulants including bovine serum albumin and sodium alginate was significantly enhanced. The water activation before microwave heating is proved to be an adequate strategy for fabricating NF membranes.
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