BIOSORPTION OF COPPER BY YEASTS

被引：31

作者：

JUNGHANS, K ^{[1
]}

STRAUBE, G ^{[1
]}

机构：

[1] TH MERSEBURG,FACHBEREICH VERFAHRENSTECH,INST BIOTECHNOL,GEUSAER STR,O-4200 MERSEBURG,GERMANY

来源：

BIOLOGY OF METALS | 1991年 / 4卷 / 04期

关键词：

BIOACCUMULATION; BIOSORPTION; METAL UPTAKE; COPPER; YEASTS;

D O I：

10.1007/BF01141186

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

The ability to accumulate copper from aqueous solutions was determined with different yeast species. Yeast cells did not show any significant differences in process kinetics. The uptake was very fast and was influenced by environmental factors. The metal-accumulating capacity differed among the tested strains. The yeasts Candida tropicalis and Pichia guilliermondii were chosen for extensive research. Cells of the stationary growth phase were able to adsorb a high amount of copper. The uptake capacity decreased with increasing biomass concentration. Copper adsorption obeyed the Freundlich isotherm. Optimal pH range was between 5 and 7. The biomass could be used repeatedly for biosorption after desorption by mineral acids.

引用

页码：233 / 237

页数：5

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