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Background: Metal pollution in aquatic environment is a major concern. Biosorption is an innovative tools using living or dead biomasses to eliminate toxic metals from aqueous solutions. Material and Methods: In this study, biosorption of cadmium (II) from aqueous solution by using green algae (Ulva compressa) were investigated. Results: The effect of the most significant process parameters (biosorption contact time, temperature, pH and initial concentration of Cd(II) ions) on the equilibrium isotherm and the adsorption kinetics were studied. The most effective pH was found to be 6. A significant correlation between pH and Cd biosorption was observed. The maximum absorption of Cd with initial concentration were 50, 100 and 150 mg LG 1 . The high biosorption efficiency was obtained as 52, 83.8 and 94.8% at pH 2.5, 6 and 9. Pseudo-order equation described the kinetic of Cd(II) biosorption. The equilibrium adsorption data are fitted to Langmuir isotherm model. Conclusion: It was observed that Ulva compressa (Linnaeus) can be a valuable material for removal of Cd from aqueous solutions.
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Mohammadi et al. (2016) studied this question.
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