EVALUATION OF CURRENT TREATMENT TECHNOLOGIES FOR Cr(VI) REMOVAL FROM WATER SOURCES AT SUB-PPB LEVELS

EXTENDED ABSTRACT Hexavalent chromium [Cr(VI)] has long been recognized as a potential carcinogen, via the inhalation route while nowadays, there is an increasing concern that Cr(VI) is also carcinogenic by the oral route of exposure. According to this, governments apply more stringent regulations for chromium species. There are several discussions and intentions to lower the current maximum permissible concentration limit of chromium in drinking water from 50 down to 5-10 μg/L. Fortunately, the remarkable growth in economics and living standards has accelerated the development of appropriate water and wastewater purification technologies. The motivation of this study was to evaluate the technologies available for the efficient removal of Cr(VI) from contaminated water sources (mostly groundwater) at sub-ppb levels in order to become safe for drinking purposes.