Biosorption of Pb(II) by industrial strain of Saccharomyces cerevisiae immobilized on the biomatrix of cone biomass of Pinus nigra:: Equilibrium and mechanism analysis

被引:100
作者
Cabuk, Ahmet [1 ]
Akar, Tamer
Tunali, Sibel
Gedikli, Serap
机构
[1] Eskisehir Osmangazi Univ, Fac Arts & Sci, Dept Biol, TR-26480 Eskisehir, Turkey
[2] Eskisehir Osmangazi Univ, Fac Arts & Sci, Dept Chem, TR-26480 Eskisehir, Turkey
关键词
biosorption; immobilization; Pb(II); Pinus nigra; Saccharomyces cerevisiae;
D O I
10.1016/j.cej.2006.12.011
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
The Pb(II) biosorption properties of industrial strain of Saccharomyces cerevisiae immobilized on cone biomass of Pinus nigra were investigated in a batch biosorption system. The effect of initial pH, contact time and biosorbent dosage on the biosorption process was systematically investigated. The biosorption equilibrium was attained within 30 min. Experimental data were modeled by Freundlich, Langmuir and Dubinin-Radushkevich (D-R) isotherms. The maximum monolayer biosorption capacity for immobilized biomass was determined as 1.45 x 10(-4) mol g(-1) at pH 5.0 with 2.0 gl(-1) of biosorbent dosage. The Pb(H) loading ability of the low-cost biosorbent system was also tested for real industrial wastewater. The mechanism of the process was evaluated by FT-IR and EDAX analysis. The results revealed that this new biosorbent system was a promising candidate for eliminating Pb(H) from contaminated aquatic environment. (c) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码:293 / 300
页数:8
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