Zhou, Hong Susan
Shanghai Jiao Tong University
Ultrafiltration (UF) has been widely utilized for advanced water treatment; though, it cannot effectively remove natural organic matter (NOM) and heavy metals due to large pore sizes. Previous studies have proven that modified negatively charged membranes with larger spacer arm lengths have better removal of NOM. Also, heavy metal typically complexes with NOM when they are coexisted. Therefore, the goal of this project was to explore the possibility of using charged UF membrane for the effective simultaneous removal of NOM and heavy metal. Compared with the unmodified regenerated cellulose membranes (CRC), negatively charged CRC membranes with different spacer arm lengths were found to increase the rejections of NOM and heavy metal, and at the same time decreases the flux decline.
Worcester Polytechnic Institute
Major Qualifying Project
All authors have granted to WPI a nonexclusive royalty-free license to distribute copies of the work, subject to other agreements. Copyright is held by the author or authors, with all rights reserved, unless otherwise noted.