Ca-alginate as a support for Pb(II) and Zn(II) biosorption with immobilized Phanerochaete chrysosporium

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• 作者：Yakup Ar?ca ; M. ; Arpa ; Ç ; igdem ; Ergene ; Aysun ; Bayramoglu ; G&uuml ; lay ; Genç ; Ö ; mer
• 关键词：Heavy metals ; Alginate ; Immobilization ; Fungal biomass ; Biosorption ; Phanerochaete chrysosporium
• 刊名：Carbohydrate Polymers
• 出版年：2003
• 出版时间：May 1, 2003
• 年：2003
• 卷：52
• 期：2
• 页码：167-174
• 全文大小：340 K

文摘

The basidio spores of Phanerochaete chryosporium were immobilized in alginate gel beads, and the immobilized spore containing alginate beads were incubated for the growth of fungus. The biosorption of Pb²⁺ and Zn²⁺ ions on alginate beads and both immobilized live and heat inactivated fungus was studied from artificial waste waters in the concentrations range of 30–600mgl⁻¹. The surface charge density of the biosorbents varied with the pH of the medium and the maximum biosorption of heavy metal ions on the biosorbents was obtained between pH 5.0 and 6.0. The biosorption of Pb²⁺ and Zn²⁺ on the biosorbents increased as the initial concentration of Pb²⁺ and Zn²⁺ ions increased in the medium. Biosorption equilibrium was established about 1h, the adsorbed heavy metal ions did not significantly change further with time. The maximum biosorption capacity (q_m) of alginate beads and both immobilized live and heat inactivated fungus were 230, 282 and 355mg for Pb²⁺ and 30, 37 and 48mg for Zn²⁺ per gram of dry biosorbents, respectively. The experimental biosorption equilibrium data for Pb²⁺, and Zn²⁺ ions were in good agreement with those calculated by Langmuir model. The affinity order of heavy metal ions was Pb²⁺>Zn²⁺.