Paper Title:
Water Permeates in Ceramic Membrane Modified with Nano Inorganic Coating
  Abstract

Membrane surface modification is the important method to decrease membrane fouling. The hydrophilic modification of ceramic membrane with nano-sized inorganic coating is prepared by the wet chemical methods. The thin nano coating is not a separating top layer but distributes uniformly on the surface of the membrane pore wall. The coating does not change the structure of the membrane pores. Therefore, water flows on not the pore wall but the nano coating surface. The results show that the water flux of the modified membrane is higher than that of the unmodified membrane despite that the mean pore size of the modified membrane decreases. The “boundary slip” is used to explain this special phenomenon. What generates the slippage? The slippage is relative with the molecular layer adhered tightly on the hydrophilic pore wall, the roughness and the surface charge of the nano coating, the interaction between the ions in water and the nano coating, et al.

  Info
Periodical
Advanced Materials Research (Volumes 239-242)
Edited by
Zhong Cao, Xueqiang Cao, Lixian Sun, Yinghe He
Pages
27-30
DOI
10.4028/www.scientific.net/AMR.239-242.27
Citation
J. E. Zhou, Q. B. Chang, Y. C. Dong, X. B. Hu, Y. Q. Wang, S. Hanpshire, "Water Permeates in Ceramic Membrane Modified with Nano Inorganic Coating", Advanced Materials Research, Vols. 239-242, pp. 27-30, 2011
Online since
May 2011
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Price
$32.00
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