Pakistan Journal of Biological Sciences1028-88801812-5735Asian Network for Scientific Information10.3923/pjbs.2007.3919.3922Sargassum sp. in Fixed-Bed Column]]>EsmaeiliAkbar SoufiSamira RustaiyanAbdolhossein SafaiyanShila MirianSimin FallaheGila MoazamiNasrin 1220071021The biosorption of copper, cobalt and nickel by marine brown alga Sargassum sp. were investigated in a fixed-bed column (temperature=30°C ; different pH). Langmuir and Freundlich sorption models were used to represent the equilibrium data. The maximum Cu2+ uptake was obtained at pH 4 and the optimum Co2+ and Ni2+ uptake were at pH 7. Different dosage of biosorbent did not have an effect on the results, but the 3.5 and 5 g of biosorbent were shown higher uptake. The metal removal rates were rapid, with about 80% of the total adsorption tacking place within 40 min.]]>Ag, Y. and Y. Aktay,200212143153Alloway, B.Y. and D.C. Ayres,19972nd Edn.,pp: 117-213pp: 117-213Davis, T.A., B. Volesky and R.H.S.F. Vieira,2000Sargassum seaweed as biosorbent for heavy metals.]]>3442704278Sheng, P.X., Y.P. Ting, J.P. Chen and L. Hong,2004275131141Vijayaraghavan, K., J. Jegan, K. Palanivelu and M. Velan,200560419426Vijayaraghavan, K., T.V.N. Padmesh, K. Palanivelu and M. Velan,2006Sargassum wightii: Application of two-parameter and three-parameter isotherm models.]]>133304308Volesky, B., J. Weber and J.M. Park,2003Sargassum column.]]>37297306Volesky, B. and Z.R. Holan,199511235250