Abstract
To improve the performance of ceramic membranes and reduce their costs, a new ceramic microfiltration membrane with a separation layer made of attapulgite nanofibers was fabricated by dip-coating on the inner surface of ɑ-alumina tubular supports. The membrane has a separation layer of attapulgite nanofibers without evident defects and exhibits excellent interface properties, showing good adherence to the ɑ-alumina substrate. The nanofiber membrane has an average pore size of 0.250μm, thickness of approximately 6.7μm, and a pure water flux of 1540L/(m2hbar). The membrane was able to reject all the calcium carbonate particles in suspension, and showed a steady permeate flux of approximately 980L/(m2hbar). In addition, the membrane can be easily regenerated by backwashing without any damage, and therefore used repeatedly.
Published Version
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