Cadmium biosorption by baker's yeast in aqueous suspensions

被引：18

作者：

Talos, Katalin ^{[1
]}

Pernyeszi, Timea ^{[1
]}

Majdik, Cornelia ^{[2
]}

Hegedusova, Alzbeta ^{[3
]}

Pager, Csilla ^{[1
]}

机构：

[1] Univ Pecs, Fac Sci, Dept Analyt & Environm Chem, H-7624 Pecs, Hungary

[2] Univ Babes Bolyai, Fac Chem & Chem Engn, RO-400293 Cluj Napoca, Romania

[3] Constantine Philosopher Univ, Fac Nat Sci, Dept Chem, SK-94901 Nitra, Slovakia

来源：

JOURNAL OF THE SERBIAN CHEMICAL SOCIETY | 2012年 / 77卷 / 04期

关键词：

cadmium; baker's yeast; biosorption; pH; kinetics; isotherm; biosorbent dosage; WASTE BREWERY YEAST; SACCHAROMYCES-CEREVISIAE; CHLORRELA-VULGARIS; BATCH SYSTEM; HEAVY-METALS; EQUILIBRIUM; REMOVAL; BIOMASS; CD2+; BED;

D O I：

10.2298/JSC110520181T

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The biosorption of cadmium from artificial aqueous solutions using native baker's yeast was investigated. The highest metal uptake value was 110 mg g(-1) yeast in a suspension of 0.30 g L-1. The effect of pH, initial cadmium concentration, adsorption time and biosorbent dosage on biosorption by baker's yeast was studied. The maximum biosorption capacity of yeast for cadmium was observed at pH 6.0. The adsorption equilibrium was reached within sixty minutes and the sorption process followed pseudo second-order kinetics. Cadmium biosorption isotherms were determined in the cadmium concentration range of 10-500 mg L-1 at pH 6 in a suspension of 0.30 g L-1. For evaluation of biosorption equilibrium, Langmuir and Freundlich equations were applied to the experimental data.

引用

页码：549 / 561

页数：13

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