iarjetIARJETIARJET2708-5163https://doi.org/10.47310/iarjet.2020.v01i02.003Removal of hexavalent Chromium from Drinking Water Samples by Using the Chemical CompoundsAliTaherAbdollahAbrahimSaadGarashDepartment of Renewable and Sustainable Energy Engineering, Faculty of Natural Resources, University, LibyaDepartment of petroleum Engineering, Faculty of Natural Resources, University, LibyaHexavalent Chromium is a priority pollutant and has been documented to be harmful to fauna; flora, human beings and water containing Chromium are hazardous. Chromium species are present in waste water during the refinery processing and in petrochemical industries. Chromium is present in two valences, Chromium (+III) and Chromium (+VI).Chromium does not occur freely in nature. The main Chromium mineral is chromate and dichromate. The element and its compounds can be discharged in surface water through various industries. It is applied for example for metal surface refinery and alloys. Two special methods were applied for measurin hexavalent Chromium A.S.T.M UV Visible spectrophotometric D7196A and atomic absorption FAAS D7195 methods were used for the determination hexavalent Chromium in each sample.. The levels of the hexavalent chromium were high for samples adjacent to the petrochemical industries plants in the past years. In 2004 the World Health Organization proved that the maximum level of total chromium was 0.05 ppm. Over this level, it is toxic in drinking water. Moreover, the amount of hexavalent Chromium in drinking water samples was higher in areas adjacent to the petrochemical industries plants. Four different chemical compounds were used 1- aluminum oxide 2- silicon oxide 3- mercaptans and 4-carboxylic group, these chemicals is used as chemical adsorbent, these chemical compouds gave good result to remove hexavalent chromium.