HOSSEIN ESFANDIAN - School of chemical, petroleum and gas engineering semnan university, semnan iran
REZA KATAL - Department of Chemical Engineering, Tarbiat Modares University, Tehran, Iran
MEHDI PARVINI - School of chemical, petroleum and gas engineering semnan university, semnan iran
BEHNAM KHOSHANDAM - School of chemical, petroleum and gas engineering semnan university, semnan iran

The aim of this research work is to investigate sorption characteristic of brown algae Sargassum bevanom (S.bevanom) for the removal of Cr(VI) ionsfrom aqueous solutions. The sorption of Cr(VI) ions by batch method is carried out. The optimum conditions of biosorption were found to be: a biomassdose of 0.7 g in 100 ml of Cr(VI) , contact time of 100 min, pH and temperature 3 and 40 0C respectively. It was found that temperature has apositive effect on the removal efficiency.