ZHOU Jianer ,HU Xuebing ,WANG Yongqing ,LIANG Jian, ZHANG Xiaozhen ,LIU Yang

(University Key Laboratory of Inorganic Membrane in Jiangxi Province, Jingdezhen Ceramic Institute, Jingdezhen 333001)

Abstract: α-Al₂O₃ microfiltration membranes were modified by nano zinc oxide and titanium oxide by a coprecipitation process.The results show the flux of the modified membranes is increased and the increasing amplitude of the flux reaches 19.4~49.6% on the condition of dead-end filtration. Furthermore, the application of nano zinc oxide modifiedα-Al₂O₃microfiltration membrane was discussed initially. The flux of the modified membrane ups to 0.708 m³·m^-2·h^-1·bar^-1 on the condition of cross flow filtration, compared with the flux of the unmodified membrane, which increased by 180.95%.

Keywords: α-alumina microfiltration membrane, modification, flux