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Equilibrium and kinetics studies of heavy metal ions biosorption on green algae waste biomass |
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| Authors: | Bulgariu Dumitru Bulgariu Laura |
| Institution: | a “Al. I. Cuza” University of Iasi, Faculty of Geography and Geology, Department of Geology and Geochemistry, Romania b Technical University Gheorghe Asachi of Iasi, Faculty of Chemical Engineering and Environmental Protection, Department of Environmental Engineering and Management, Romania c Romanian Academy, Filial of Iasi, Collective of Geography, Romania |
| Abstract: | The biosorption of Pb(II), Cd(II), and Co(II), respectively, from aqueous solution on green algae waste biomass was investigated. The green algae waste biomass was obtained from marine green algae after extraction of oil, and was used as low-cost biosorbent. Batch shaking experiments were performed to examine the effects of initial solution pH, contact time and temperature. The equilibrium biosorption data were analyzed using two isotherm models (Langmuir and Freundlich) and two kinetics models (pseudo-first order and pseudo-second order). The results indicate that Langmuir model provide best correlation of experimental data, and the pseudo-second order kinetic equation could best describe the biosorption kinetics of considered heavy metals. |
| Keywords: | Heavy metals Green algae waste biomass Biosorption Kinetics Isotherm |
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