Biosorption of chromium (VI) from aqueous solution by dried biomass of Padina borgesenni

In this study removal of Chromium VI from aqueous solution by marine brown algae Padina borgesenni as adsorant is concerned in different batch experiments. The samples were collected by a scuba diver from Hengam Island in Persian Gulf with longitude of 26̊ and 40̋ North and latitude of 52̊ and 30̋ East in 89 Fall and transferred to the laboratory. Parameters such as the initial Chromium concentration of the solution which were 125, 250, 500, 750, 1000 ppm, respectively, and the initial pH 2, 4, 7 in 6 hours were investigated. Determination of Chromium VI was conducted by atomic absorption, VARIAN AA 240, and the statistical analysis were performed by SPSS14. Elimination of Chromium VI depended on two prominent factors, the former was the initial Chromium VI concentration and the latter was the initial pH. The maximum uptake by dried biomass of Padina borgesenni was in pH 2 and 750 ppm. This study demonstrated that the initial pH played important role in Chromium uptake by the sorbent.