Titania membrane preparation with chemical stability for very hash environments applications |
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Authors: | Yong Hong Wang Ting Fang Tian Xing Qin Liu Guang Yao Meng |
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Institution: | aDepartment of Materials Science and Engineering University of Science and Technology of China, Hefei, Anhui 230026, PR China |
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Abstract: | The high-quality tubular titania MF membranes are successfully prepared by dip-coating techniques and systematically investigated with regard to their corrosive resistances. The experiments show that dispersants PAA and anatase powder were preferably employed to prepare desired suspensions with solid loading 10–15 wt.% and that suspensions properties significantly affect the final membranes quality. The titania MF membranes with pure water permeability 742.42 l m?2 h?1 bar?1 and 0.1 μm pore diameter have been obtained using the prepared suspensions. The corrosion resistance of titania membranes exhibits that the anatase layers are more stable than the alumina supports in boiling corrosive medium and that the poor quality titania MF membranes become more deteriorated due to its top layer pore blockages and fouling layer formation, which provides a wide range of practical application fields in very hash environments with reliable data supports. |
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Keywords: | Ceramic membranes Titania porous membranes Suspensions Corrosion resistance |
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