4.5 Article

Investigation of surface and filtration properties of TiO2 coated ultrafiltration polyacrylonitrile membranes

Journal

WATER SCIENCE AND TECHNOLOGY
Volume 77, Issue 4, Pages 931-938

Publisher

IWA PUBLISHING
DOI: 10.2166/wst.2017.610

Keywords

coated polyacrylonitrile membrane; heterogeneous photocatalysis; hybrid process; membrane surface cleaning; oily wastewater; TiO2 P25

Funding

  1. Janos Bolyai Research Scholarship of the Hungarian Academy of Sciences
  2. Hungarian Science and Research Foundation (NKFI) [K112096]

Ask authors/readers for more resources

In the present work, the surface and filtration properties of TiO2 coated polyacrylonitrile ultrafiltration membranes were investigated. The membranes were coated using the physical deposition method. The appropriate TiO2 coverage proved to be 0.3 mg/cm(2), which formed a hydrophilic cake layer on the membrane surface. The cleanability without chemicals and the retention of the coated membranes was compared to the neat membrane after model oily wastewater filtration. The cleaning sustained of rinsing with distilled water and ultraviolet (UV) irradiation of the fouled membranes. The coated membranes have better antifouling properties; higher flux values during oily water filtration and by the mentioned cleaning process a significantly better flux recovery can be achieved. The amount of the catalyst and the irradiation time are limiting factors to the effectiveness of the cleaning process. The UV irradiation increases the wettability of the fouled membrane surface by degrading the oil layer. The coating, the continuous use, and the cleaning process do not significantly affect the membrane retention expressed in chemical oxygen demand.

Authors

I am an author on this paper
Click your name to claim this paper and add it to your profile.

Reviews

Primary Rating

4.5
Not enough ratings

Secondary Ratings

Novelty
-
Significance
-
Scientific rigor
-
Rate this paper

Recommended

No Data Available
No Data Available