A POLYACRYLONITRILE ULTRAFILTRATION MEMBRANE FOR REMOVAL OF ARSENIC AND CHROMIUM

摘要

Polyacrylonitrile (PAN) ultrafiltration membrane for removal of heavy metals like arsenic and chromium ions from water, with low operating pressure. The PAN based ultrafiltration membrane have negative charge because the isoelectric point of the said membrane was located at acidic side (= pH 3.5), which repelled the arsenic and chromium ions from water resulting in higher rejection.