Faculty Advisor

Zhou, Hong Susan

Project Center

Shanghai, China


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

Date Accepted

January 2014


Chemical Engineering

Project Type

Major Qualifying Project



Advisor Department

Chemical Engineering