| Removal of Cr(VI) from aqueous solution by modified ultrafiltration membrane |
| Paper ID : 1233-UFGNSM-FULL |
| Authors: |
|
maryam sadat kazemi *1, majid peyravi2, Mohsen Jahanshahi2 1Shariati Av., Babol, Mazandaran, Iran
47148 - 71167 2Nanotechnology Research Institute, School of Chemical Engineering, Babol University, Babol, Iran |
| Abstract: |
| The drinking water containing hexavalent chromium [Cr(VI)], accumulating in the food chain, is harmful to humans because of its carcinogenicity. In this study, a new adsorbent thin film composite (TFC) membrane was prepared. Fabricated membrane was used for removal of hexavalent chromium, from aqueous solution. Membranes were fabricated by modification of ultrafiltration (UF) poly sulfone (PSF) membrane surface by layer of chitosan as a cationic polyelectrolyte. Surface of PSF UF membranes are negatively charged thus chitosan binds on its surface through electrostatic interactions. Modified membrane characterized by atomic force microscopy (AFM) and contact angle analysis. According to results of analysis, roughness of membrane surface decreases after modification of it by chitosan and contact angle of modified membrane was decreased significantly. Reducing the contact angle leads to increasing the hydrophilicity of modified membrane, this result confirms by high water flux of modified membrane. For investigation performance of neat and modified membrane in Cr(VI) removal were carried out the batch experiment and filtration test. According to results, modified membrane has shown high efficiency for removal of Cr(VI) from aqueous solution. Filtration test was performed in different initial feed concentration. Results shows removal percent of Cr(VI) increases with reducing of initial feed concentration. |
| Keywords: |
| Cr(VI) removal, Ultrafiltration, modification. |
| Status : Paper Accepted (Poster Presentation) |
