International Journal of Environmental Science and Technology

, Volume 10, Issue 3, pp 579–590

Biosorption of lead from acid solution using chitosan as a supporting material for spore forming-fungal biomass encapsulation

Authors

    • Department of Microbiology, Faculty of Liberal Arts and ScienceKasetsart University
    • Laboratory of Molecular Enzymology, Research Faculty of AgricultureHokkaido University
  • W. Buranaboripan
    • Department of Science, Faculty of Liberal Arts and ScienceKasetsart University
    • Graduate School of Environmental ScienceHokkaido University
  • J. Wongchawalit
    • Department of Microbiology, Faculty of Liberal Arts and ScienceKasetsart University
  • P. Parakulsuksatid
    • Department of Biotechnology, Faculty of Agro-IndustryKasetsart University
    • Center for Advanced Studies in Tropical Natural ResourcesNational Research University-Kasetsart University, Kasetsart University
  • W. Vanichsriratana
    • Department of Biotechnology, Faculty of Agro-IndustryKasetsart University
    • Center for Advanced Studies in Tropical Natural ResourcesNational Research University-Kasetsart University, Kasetsart University
  • N. Sakairi
    • Graduate School of Environmental ScienceHokkaido University
  • W. Pathom-aree
    • Department of Biology, Faculty of ScienceChiang Mai University
  • S. Sirisansaneeyakul
    • Department of Biotechnology, Faculty of Agro-IndustryKasetsart University
    • Center for Advanced Studies in Tropical Natural ResourcesNational Research University-Kasetsart University, Kasetsart University
Original Paper

DOI: 10.1007/s13762-012-0148-1

Cite this article as:
Lang, W., Buranaboripan, W., Wongchawalit, J. et al. Int. J. Environ. Sci. Technol. (2013) 10: 579. doi:10.1007/s13762-012-0148-1

Abstract

Asexual spores of the filamentous fungus Rhizopus arrhizus were used as the resting biomass as they tolerate chitosan gelling for mycelia growing in chitosan beads. Biosorption of lead using the dead detergent pre-treated chitosan-immobilised and grown fungal beads was performed with initial lead (II) nitrate concentrations ranging from 9.02 to 281.65 mg/L. The adsorption data were best correlated with equilibrium adsorption isotherms in the order Redlich–Peterson, Langmuir, Freundlich and Fritz–Schlünder by non-linear regression. The biosorption kinetic model of pseudo second-order (R2 > 0.99) fitted better than pseudo first-order and modified pseudo first-order models. Among the four pseudo second-order kinetic models, the Blanchard model was the best fit for the experimental biosorption data. The rate-limiting step of biosorption of lead was shown to be intraparticle diffusion controlled according to Weber and Morris model fitting. The beads could be regenerated using 1 M nitric acid solution. This illustrated the good performance of the beads for regenerated sorption/desorption at least five cycles.

Keywords

Adsorption kineticsDetergentDiffusion modelHeavy metalLead (II)RegenerationRhizopus arrhizus

Copyright information

© CEERS, IAU 2013