Equilibrium, thermodynamic and kinetic studies for the biosorption of aqueous lead(II), cadmium(II) and nickel(II) ions on Spirulina platensis
作者： Ayşegül Şeker , Talal Shahwan , Ahmet E. Eroğlu , Sinan Yılmaz , Zeliha Demirel
DOI: 10.1016/J.JHAZMAT.2007.11.007
关键词: Inorganic chemistry 、 Nickel 、 Cadmium 、 Metal ions in aqueous solution 、 Biosorption 、 Chromatography 、 Chemistry 、 Freundlich equation 、 Ionic bonding 、 Sorption 、 Aqueous solution
摘要: The biosorption of lead(II), cadmium(II) and nickel(II) ions from aqueous solution by Spirulina platensis was studied as a function time, concentration, temperature, repetitive reactivity, ionic competition. kinetic results obeyed well the pseudo second-order model. Freundlich, Dubinin Radushkevich Temkin isotherm models were applied in describing equilibrium partition ions. Freundlich to describe design single-stage batch sorption system. According thermodynamic parameters such ΔG°, ΔH°and ΔS° calculated, process endothermic largely driven towards products. Sorption activities three metal ion system which indicated that there is relative selectivity biosorbent Pb2+ measurements reusability S. large capacity
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