Biosorption of Cr (VI) from aqueous solutions by biomass of Agaricus bisporus

ERTUGAY N., BAYHAN Y. K.

JOURNAL OF HAZARDOUS MATERIALS, cilt.154, ss.432-439, 2008 (SCI-Expanded) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 154
  • Basım Tarihi: 2008
  • Doi Numarası: 10.1016/j.jhazmat.2007.10.070
  • Dergi Adı: JOURNAL OF HAZARDOUS MATERIALS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.432-439
  • Anahtar Kelimeler: biosorption, Agaricus bisporus, chromium, kinetic modeling, biosorption isotherms, HEAVY-METALS, REMOVAL, CHROMIUM(VI), EQUILIBRIUM, ADSORPTION, CR(VI), WASTE, NICKEL(II), BATCH, IONS
  • Atatürk Üniversitesi Adresli: Evet

Özet

In this study, biosorption of Cr (VI) ion was investigated by using biomass of Agaricus bisporus (a species of mushroom) in a temperature and shaking speed controlled shaker. The effect of shaking speed, biomass concentration, initial metal ion concentration and initial pH on biosorption yield was determined and the fitness of biosorption data for Freundlich and Langmuir adsorption models was investigated. Optimum biosorption conditions were found to be pH 1, C-0 = 50 mg/l, m = 10 g/l, shaking speed = 150 rpm, T = 20 degrees C Cr (VI), respectively. It was found that biosorption of Cr (VI) ions onto biomass of A. bisporus was better suitable to Freundlich adsorption model than Langmuir adsorption model. The correlation coefficients for the second-order kinetic model obtained were found to be 0.999 for all concentrations. These indicate that the biosorption system studied belongs to the second-order kinetic model. (C) 2007 Elsevier B.V. All rights reserved.