Potential of various biosorbents for Zn(II) removal

Anikó Kőnig-Péter, Csaba Csudai, Attila Felinger, Ferenc Kilár, Tímea Pernyeszi

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6 Citations (Scopus)

Abstract

The adsorption capacities of six biosorbents (Pseudomonas aeruginosa, Pseudomonas fluorescens, Escherichia coli, Chlorella vulgaris, and Spirulina platensis) for Zn(II) ions under batch condition have been studied. The optimum pH range was found to be 5.0-6.0. The amount of adsorbed Zn(II) ions were between 18 and 128 mg/g. Characterization of biosorption equilibrium was evaluated with Langmuir and Dubinin-Radushkevich model using non-linear regression. The adsorption capacities of Ca-alginate, chitosan, and immobilized Spirulina platensis-maxima cells were also determined in packed-bed column in continuous system. The results show, free Spirulina cells have the highest adsorption capacity for Zn(II) ions (128 mg/g). The chitosan-Spirulina system has slightly decreased adsorption capacity 98 mg/g per dry weight content. Thomas and Yoon-Nelson models were fitted for the evaluation of experimental data.

Original languageEnglish
Article number2089
JournalWater, Air, and Soil Pollution
Volume225
Issue number9
DOIs
Publication statusPublished - Sep 2014

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Keywords

  • Biosorbents
  • Ca-alginate
  • Chitosan
  • Modeling
  • Zn(II)

ASJC Scopus subject areas

  • Environmental Engineering
  • Environmental Chemistry
  • Ecological Modelling
  • Water Science and Technology
  • Pollution

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