Publication detail

Biosorption of Cu, Zn and Pb by thermophilic bacteria -- effect of biomass concentration on biosorption capacity

BABÁK, L. ŠUPINOVÁ, P. ZICHOVÁ, M. BURDYCHOVÁ, R. VÍTOVÁ, E.

Original Title

Biosorption of Cu, Zn and Pb by thermophilic bacteria -- effect of biomass concentration on biosorption capacity

Type

journal article - other

Language

English

Original Abstract

The aim of this work was to study the biosorption capacity of metals copper, lead and zinc by Geobacillus thermodenitrificans and Geobacillus thermocatenulatus. Solution of each metal was mixed with dry biomass and incubated at room temperature. The supernatant was taken and used for complexometric titration. The sorption capacity for Cu2+ was highest when using 0.5 g.l-1 Geobacillus thermodenitrificans (57 +- 4 mg.g-1). The sorption capacity rapidly decreases with increased concentrations. Similarly for Zn2+ ions, the highest sorption capacity was for biomass concentration 0.5 g.l-1 (18 +- 3 mg.g-1) and slowly decreases. For Pb2+ ions, the decrease is almost linear to the biomass concentration 2 g.l-1, i.e. from 117 +- 13 mg.g-1 to 53 +- 3 mg.g-1. The sorption capacity of Cu2+ ions was highest at the lowest biomass concentration of Geobacillus thermocatenulatus (65 +- 3 mg.g-1), then it sharply decreased and at concentration of biomass of 1 g.l-1 did not changed. In the case of Zn2+ ions, we could seen a moderate drop with the increasing concentration with the range of 24 +- 3 to 12.3 +- 0.4 mg.g-1. For Pb2+ ions was the decrease slow, from 119 +- 8 mg.g-1 to 54 +- 4 mg.g-1. Affinity of metals to bacteria was determined in the order Pb2+ > Cu2+ > Zn2+. The results show, that Geobacillus thermocatenulatus has better sorption capabilities than Geobacillus thermodenitrificans.

Keywords

biosorption, heavy metals, Geobacillus thermodenitrificans, Geobacillus thermocatenulatus

Authors

BABÁK, L.; ŠUPINOVÁ, P.; ZICHOVÁ, M.; BURDYCHOVÁ, R.; VÍTOVÁ, E.

RIV year

2012

Released

25. 9. 2012

Publisher

MZLU v Brně

Location

Brno

ISBN

1211-8516

Periodical

Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis

Year of study

60

Number

5

State

Czech Republic

Pages from

9

Pages to

18

Pages count

9

BibTex

@article{BUT94018,
  author="Libor {Babák} and Petra {Šupinová} and Miroslava {Zichová} and Radka {Burdychová} and Eva {Vítová}",
  title="Biosorption of Cu, Zn and Pb by thermophilic bacteria -- effect of biomass concentration on biosorption capacity",
  journal="Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis",
  year="2012",
  volume="60",
  number="5",
  pages="9--18",
  issn="1211-8516"
}