The influence of an applied electric field during ceramic ultrafiltration of post-electrodeposition rinse wastewater

详细信息	查看全文 | 推荐本文 |

• 作者：Bernard A. Agana^a ; Darrell Reeve^b ; John D. Orbell^a ; ^b ; ^{John.Orbell@vu.edu.au}
• 关键词：Ceramic membrane ; Applied voltage ; Cathodic electrodeposition paint ; Crossflow velocity ; Electro-ultrafiltration ; Transmembrane pressure
• 刊名：Water Research
• 出版年：2012
• 期刊代码：57_00431354
• 类别：civ
• 出版时间：July, 2012
• 卷：46
• 期：11
• 页码：3574-3584
• 文件大小：805 K

摘要

Electro-ultrafiltration is a method that can be employed for treating wastewater containing charged particles. In this method, an electric field produced by an applied voltage influences the movement and electrophoretic mobility of the charged particles - minimizing concentration polarization and improving permeate flux. The present study has evaluated the influence of an electric field on the filtration performance of a 50-nm ceramic ultrafiltration membrane with respect to model wastewater containing 5%v/v suspension of CED paint. Results showed that the influence of an electric field during electro-ultrafiltration of the model wastewater was dependent on both the applied voltage and transmembrane pressure (TMP). At a TMP of 100聽kPa, the application of different magnitudes of voltages generally improved filtration efficiency - with the most significant improvement obtained at an applied voltage of 60聽V. At an applied voltage of 60聽V and TMP of 100聽kPa, flux rates obtained after 60聽min were higher than the flux rates obtained from ultrafiltration alone. In contrast, at higher TMPs of 200 and 300聽kPa, no improvement in filtration efficiency was obtained at all magnitudes of applied voltages.