Removal of Hexavalent Chromium from Water by Chitosan-Enhanced Ultrafiltration

Polymer-enhanced ultrafiltration has gained increasing attention as a selective separation process to remove small solutes, such metal ions, from water or wastewater. Hexavalent chromium Cr(VI) is one of the ions in wastewater that received considerable because its toxicity. Chitosan was used this study polymer bind enhance removal by ultrafiltration. The effects chitosan-to-Cr(VI) ratio on rejection and permeate flux were investigated. In addition, fouling tendency evaluated. Results showed addition chitosan with mass 12.5 increased Cr (VI) 28% 75% slight reduction L.m−2.h−1 9.3 L.m−2.h−1. Moreover, reduced after 100 min operation could be recovered using backwash procedure 89% compared initial flux.