期刊
JOURNAL OF MEMBRANE SCIENCE
卷 470, 期 -, 页码 421-430出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.memsci.2014.07.051
关键词
Organic solvent nanofiltration; Ceramic membranes; Inorganic membranes; Permporometry
资金
- German Federal Ministry of Education and Research
Ceramic membranes show advantageous behavior over polymeric membranes under harsh conditions including high pH, high temperature applications or applications involving organic solvents. However, in the range of organic solvent nanofiltration (OSN) the currently available membranes do just offer a molecular weight cut-off (MWCO) of 600 g/mol or above. Here, a new approach is presented to manufacture ceramic membranes with active layers of titanium dioxide/zirconium dioxide with integrated carbon on Lop of a tubular ceramic multi-layer support. Filtration tests of these membranes with polystyrene mixtures in THF reveal a MWCO of 350 g/mol, thus extending the range of possible nanofiltration applications. The paper also presents a new combination of characterization of the membranes with permporometry and filtration tests that demonstrate the importance of the supporting layers for the creation of a good nanofiltration membrane. (C) 2014 Elsevier B.V. All rights reserved.
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