Biosorption mechanism of Cr (VI) onto cells of Synechococcus sp.

  • Shen Li  (申丽)
  • Xia Jin-lan  (夏金兰)Email author
  • He Huan  (何环)
  • Nie Zhen-yuan  (聂珍媛)
  • Qiu Guan-zhou  (邱冠周)


The biosorption mechanism of Cr (VI) ions on Synechococcus sp. biosorbent was studied by analyzing the biosorption kinetics as well as speciation change and bond formation during the biosorption process. The kinetics study shows that the adsorption process of Cr (VI) consists of a very fast stage in the first several minutes, in which more than half of the saturation adsorption is attained, and a slower stage that approximately follows the first order kinetic model, basically Freundlich isotherm models were observed. Comparative studies of FT-IR spectra of K2Cr2O7, free cells of Synechococcus sp., and Cr-bound cells of Synechococcus sp. show that the speciation of chromium that binds to the cells of Synechococcus sp. is Cr (III), instead of Cr (VI), and the carboxylic, alcoholic, amido and amino groups may be involved in the binding of Cr (III). Integrative analyses of the surface electric potential, the effect of pH value on adsorption behavior of Cr (VI), and the results of FT-IR show that the biosorption of Cr (VI) follows two subsequent steps, biosorption of Cr2O72− by electrostatical force at the protonated active sites and reduction of Cr2O72− to Cr3+ by the reductive groups on the surface of the biosorbents.

Key words

biosorption Synechococcus sp Cr (VI) biosorption mechanism biosorption kinetics 


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. [1]
    BAILEY S E, OLIN T J, BRICKA R M, et al. A review of potentially low-cost sorbents for heavy metals[J]. Water Res, 1999, 33(1): 2469–2479.CrossRefGoogle Scholar
  2. [2]
    ECCLES H. Removal of heavy metals from effluent streams-Why select a biological process[J]. Int Biodeterior Biodegrad, 1995, 35: 5–16.CrossRefGoogle Scholar
  3. [3]
    VOLESKY B. Advances in biosorption of metals: Selection of biomass types[J]. FEMS Microbiol Rev, 1994, 14(2/3): 291–302.CrossRefGoogle Scholar
  4. [4]
    DONMEZ G, AKSU Z. Removal of chromium (VI) from saline wastewaters by Dunaliella species[J]. Process Biochem, 2002, 38(5): 751–762.CrossRefGoogle Scholar
  5. [5]
    CHOJNACKA K, CHOJNACKI A, GÓRECKA. Trace element removal by Spirulina sp. from copper smelter and refinery effluents[J]. Hydrometallurgy, 2004, 73(1/2): 137–153.Google Scholar
  6. [6]
    EL-SHEEKH M M, EL-SHOUNY W A, OSMAN M E H, et al. Growth and heavy metals removal efficiency of Nostoc muscorum and Anabaena subcylindrica in sewage and industrial wastewater effluents[J]. Environ Toxicol Pharmacol, 2005, 19: 357–365.CrossRefGoogle Scholar
  7. [7]
    GUPTA V K, SHRIVASTAVA A K, JAIN N. Biosorption of chromium (VI) from aqueous solution by green algae Spirogyra species[J]. Biotechnol Bioeng, 2001, 35(17): 4079–4085.Google Scholar
  8. [8]
    GARDEA-TORRESDEY J L, ARENAS J L, WEBB R, et al. Ability of immobilized cyanobacteria to remove metal ions from solution and demonstration of metallothionin genes in variuos strains[J]. J Hazard Substance Res, 1997, 1(3): 1–18.Google Scholar
  9. [9]
    GARDEA-TORRESDEY J L, ARENAS J L, WEBB R, et al. Determination of the ability of inactivated and immobilized cells of Synechococcus PCC 7942 (Cyanobacteria) to uptake metal ions from solution[C]// ERICKSON L E, RANKIN M M, GRANT S C, MCDONALD J P. Proceedings of the 12th Annual Conference on Hazardous Waste Research. Manhattan; KS, Building Partnerships for Innovative Technologies, Kansas State Univ, 1997: 16–32Google Scholar
  10. [10]
    YU Xia, CHAI Li-yuan, MIN Xiao-bo. Removal of lead in wastewater by immobilized inactivated cells of Rhizopus oligosporus[J]. J Cent South Univ Technol, 2003, 10(4): 313–317.CrossRefGoogle Scholar
  11. [11]
    XIA Jin-lan, SHEN Li, et al. Camparative study of biosorption of Cr(VI) onto free and immobilized cells of symechococcus sp[J]. J Cent South Univ Technol, 2006, 37(2): 241–246.(in Chinese)Google Scholar
  12. [12]
    CARMONA M E R, da SILVA M A P, LEITE S G F. Biosorption of chromium using factorial experimental design[J]. Process Biochem, 2005, 40(2): 779–788.CrossRefGoogle Scholar
  13. [13]
    TOBIN J M, ROUX J C. Mucor biosorbent for chromium removal from tanning effluent[J]. Water Res, 1998, 32(5): 1407–1416.CrossRefGoogle Scholar
  14. [14]
    SAG Y, KUTSAL T. The simultaneous biosorption of Cr(VI), Fe(III) and Cu(II) on Rhizopus arrhizus[J]. Process Biochem, 1998, 33(5): 571–579.CrossRefGoogle Scholar
  15. [15]
    DÖNMEZ G Ç, AKSU Z, ÖZTÜRK A, KUTSAL T. A comparative study on heavy metal biosorption characteristics of some algae[J]. Process Biochem, 1999, 34(9): 885–892.CrossRefGoogle Scholar
  16. [16]
    EATON A D, CLESCERI L S, GREENBERG A E. Standard methods for the examination of water and waste water[S]. American Public Health Association (APHA), AWWA, WPCF: Washington, DC, 1995: 4–23.Google Scholar
  17. [17]
    CRIST H R, OBERHOLSER K, SHANK N, et al. Nature of bonding between metallic ions and algal cell walls[J]. Environ Sci Technol, 1981, 15(10): 1212–1217.CrossRefGoogle Scholar
  18. [18]
    ÖZER A, ÖZER D. Comparative study of the biosorption of Pb (II), Ni (II) and Cr (VI) ions onto S. cerevisiae: Determination of biosorption heats[J]. J Hazard Mater, 2003, 100(1/3): 219–229.CrossRefGoogle Scholar
  19. [19]
    NURBA M, NOURBAKHSH S, KILIÇARSLAN S. Biosorption of Cr6+, Pb2+ and Cu2+ ions in industrial waste water on Bacillus sp.[J]. Chem Eng, 2002, 85(2/3): 351–355.Google Scholar
  20. [20]
    SUDHA S R, ABRAHAM T E. Biosorption of Cr(VI) from aqueous solution by Rhizopus nigricans[J]. Bioresour Technol, 2001, 79(1): 73–81.CrossRefGoogle Scholar
  21. [21]
    PALMIERI M C, GARCIA JR O, MELNIKOV P. Neodymium biosorption from acidic solutions in batch system[J]. Process Biochem, 2000, 36(5): 441–444.CrossRefGoogle Scholar
  22. [22]
    CHANG Xiu-lian, WANG Wen-hua, WEN Shao-hong. Investigation of cadmium(II) biosorption on shrimp shell[J]. Ion Exchange and Adsorption, 2002, 18(3): 241–248. (in Chinese)Google Scholar

Copyright information

© Published by: Central South University Press, Sole distributor outside Mainland China: Springer 2007

Authors and Affiliations

  • Shen Li  (申丽)
    • 1
  • Xia Jin-lan  (夏金兰)
    • 1
    Email author
  • He Huan  (何环)
    • 1
  • Nie Zhen-yuan  (聂珍媛)
    • 1
  • Qiu Guan-zhou  (邱冠周)
    • 1
  1. 1.Key Laboratory of Biometallurgy of Ministry of Education, School of Minerals Processing and BioengineeringCentral South UniversityChangshaChina

Personalised recommendations