Cr(III) uptake by marine algal biomass: equilibrium and kinetics
by Vítor J.P. Vilar; Olga M.M. Freitas; Pedro M.S. Costa; Cidalia M.S. Botelho; Ramiro J.E. Martins; Rui A.R. Boaventura
International Journal of Environment and Waste Management (IJEWM), Vol. 8, No. 3/4, 2011

Abstract: In this work, biosorption of Cr(III) by the marine brown algae Sargassum muticum was studied in a batch system. Kinetics and equilibrium experiments were conducted at different pH. Equilibrium data are well described by the Langmuir and Langmuir-Freundlich isotherms. The two mass transfer models give comparable results, but they did not provide a perfect representation of the sorption data. Sargassum muticum was compared with the brown algae Laminaria hyperborean and the red algae Gelidium sesquipedale, showing maximum uptake capacities of, 56 ± 3, 70 ± 4 and 18 ± 1 mg Cr(III) g-1, at pH = 5, respectively.

Online publication date: Sat, 24-Jan-2015

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