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Kinetic and Equilibrium Studies of Cr(VI) Biosorption by Dead Bacillus licheniformis Biomass

  • Ming Zhou
  • Yunguo Liu
  • Guangming Zeng
  • Xin Li
  • Weihua Xu
  • Ting Fan
Original Paper

Abstract

Many studies have been carried out on the biosorption capacity of different kinds of biomass. However, reports on the kinetic and equilibrium study of the biosorption process are limited. In our experiments, the removal of Cr(VI) from aqueous solution was investigated in a batch system by sorption on the dead cells of Bacillus licheniformis isolated from metal-polluted soils. Equilibrium and kinetic experiments were performed at various initial metal concentrations, pH, contact time, and temperatures. The biomass exhibited the highest Cr(VI) uptake capacity at 50°C, pH 2.5 and with the initial Cr(VI) concentration of 300 mg/g. The Langmuir and Freundlich models were considered to identify the isotherm that could better describe the equilibrium adsorption of Cr(VI) onto biomass. The Langmuir model fitted our experimental data better than the Freundlich model. The suitability of the pseudo first-order and pseudo second-order kinetic models for the sorption of Cr(VI) onto Bacillus licheniformis was also discussed. It is better to apply the pseudo second-kinetic model to describe the sorption system.

Keywords

Biosorption Bacillus licheniformis Cr(VI) equilibrium isotherms kinetic modeling 

Nomenclature

b

Langmuir adsorption constant (l/mg)

Ceq

Researchidual metal ion concentration at equilibrium (mg/l)

Ci

Initial metal ion concentration (mg/l)

K1ad

First-order adsorption rate constant (1/min)

K2ad

Second-order adsorption rate constant (g/mg/ min)

KF

Freundlich adsorption constant

m

Biomass dose (g/l)

n

Freundlich adsorption constant

Qeq

Adsorbed metal ion quantity per gram of biosorbent at equilibrium (mg/g)

Qmax

The maximum amount of metal ion per unit weight of biomass (mg/g)

Qt

The amount of metal ions adsorbed at any given time t(mg/g)

R

Removal efficiency

R2

Correlation coefficient

RL2

Correlation coefficient of Langmuir model

RF2

Correlation coefficient of Freundlich model

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References

  1. Aksu Z, Acikel U, Kabasakal E, Tezer S, (2002) Equilibrium modelling of individual and simultaneous biosorption of chromium(VI) and nickel(II) onto dried activated sludge. Water Res 36:3063–3073CrossRefPubMedGoogle Scholar
  2. Aksu Z (2001) Biosorption of reactive dyes by dried activated sludge: equilibrium and kinetic modelling. Biochem Eng J 7:79–84CrossRefPubMedGoogle Scholar
  3. Aksu Z, Donmez G (2003) A comparative study on the biosorption characteristics of some yeasts for Remazol Blue reactive dye. Chemosphere 50:1075–1083CrossRefPubMedGoogle Scholar
  4. Atifet B, Handan U, Yalcın KB, Ahmet K, Avni C (2004) Removal of chromate anions from aqueous stream by a cationic surfactant-modified yeast. Bioresour Technol 94:245–249CrossRefPubMedGoogle Scholar
  5. APHA (1992) Standard methods for the examination of water and wastewater. 18th edn. American Public Health Association. American Water Works Association. Water Environmental Federation, Washington, DC. ISBN 0875532071Google Scholar
  6. Cimino G, Passerini A, Toscano G (2000) Removal of toxic cation and Cr(VI) from aqueous solution by hazelnut shell. Water Res 34:2955–2962CrossRefGoogle Scholar
  7. Dean SA, Tobin JM. (1999) Uptake of chromium cations and anions by milled peat. Res, Conserv Recycling 27:151–156CrossRefGoogle Scholar
  8. Donmez GC, Aksu Z, Ozturk A, Kutsal T (1999) A comparative study on heavy metal biosorption characteristics of some algae. Process Biochem 34:885–892CrossRefGoogle Scholar
  9. Dong XZ, Cai MY (2001) The manual of systematic determinative bacteriology. Science Press, Beijing, pp 62–63. ISBN 7–03–008460–8Google Scholar
  10. Gardea-Torresdey JL, Tiemann KJ, Armendariz V, Bess-Oberto L, Chianelli RR, Rios J, Parsons JG, Gamez G (2000) Characterization of Cr(VI) binding and reduction to Cr(III) by the agricultural byproducts of Avena monida (Oat) biomass. J Hazard Mater 80:175–188CrossRefPubMedGoogle Scholar
  11. Gonul D, Aksu Z (2002) Removal of chromium (VI) from saline wastewaters by Dunaliella species. Process Biochem 38:751–762CrossRefGoogle Scholar
  12. Gupta VK, Shrivastava AK, Neeraj J (2001) Biosorption of chromium(VI) from aqueous solutions by green algae Spirogyra species. Water Research 35:4079–4085CrossRefPubMedGoogle Scholar
  13. Ho YS, McKay G (1999a) The sorption of lead(II) ions on peat. Water Res 33:578–584CrossRefGoogle Scholar
  14. Ho YS, McKay G (1999b) Pseudo-second order model for sorption process. Process Biochem 34:451–459CrossRefGoogle Scholar
  15. Kuroda K, Ueda M (2003) Bioadsorption of cadmium ion by cell surface-engineered yeasts displaying metallothionein and hexa-His. Appl Microbiol Biotechnol 63:182–186CrossRefPubMedGoogle Scholar
  16. Omar NB, Merroun ML, Penalver JMA, Munoz TG (1997) Comparative heavy metal biosorption study of brewery yeast and Myxococcus xanthus biomass. Chemosphere 35:2277–2283CrossRefPubMedGoogle Scholar
  17. Srinath T, Verma T, Ramteke PW, Garg SK (2002) Chromium (VI) biosorption and bioaccumulation bychromate resistant bacteria. Chemosphere 48:427–435CrossRefPubMedGoogle Scholar
  18. Saeed A, Iqbal M. (2003) Bioremoval of cadmium from aqueous solution by black gram husk (Cicer arientinum). Water Res 37:3472–3480CrossRefPubMedGoogle Scholar
  19. Ucun H, Bayhan YK, Kaya Y, Cakici A, Algur OF (2002) Biosorption of chromium(VI) from aqueous solution by cone biomass of Pinus sylvestris. Bioresour Technol 85:155–158CrossRefPubMedGoogle Scholar
  20. Yakup AM, Yasemin K, Ömer G (2001) Entrapment of white-rot fungus Trametes versicolor in Ca-alginate beads: preparation and biosorption kinetic analysis for cadmium removal from an aqueous solution. Bioresour Technol 80:121–129CrossRefPubMedGoogle Scholar

Copyright information

© Springer Science+Business Media B.V. 2006

Authors and Affiliations

  • Ming Zhou
    • 1
  • Yunguo Liu
    • 1
  • Guangming Zeng
    • 1
  • Xin Li
    • 1
  • Weihua Xu
    • 1
  • Ting Fan
    • 1
  1. 1.College of Environmental Science and EngineeringHunan UniversityChangshaP.R. China

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