Effects of biosorption parameter: kinetics, isotherm and thermodynamics for Ni(II) biosorption from aqueous solution by Circinella sp.

Alpat Ş., Kılınç Alpat S., Cadirci B. H., Özbayrak Azman Ö., Yaşa İ.

ELECTRONIC JOURNAL OF BIOTECHNOLOGY, cilt.13, sa.5, 2010 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 13 Sayı: 5
  • Basım Tarihi: 2010
  • Doi Numarası: 10.2225/vol13-issue5-fulltext-20
  • Dergi Adı: ELECTRONIC JOURNAL OF BIOTECHNOLOGY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Anahtar Kelimeler: biosorption, Circinella sp., equilibrium, kinetic, nickel, NICKEL(II) IONS, FUNGAL BIOMASS, METAL-IONS, REMOVAL, BIOACCUMULATION, CADMIUM(II), COPPER(II)
  • Dokuz Eylül Üniversitesi Adresli: Evet

Özet

Circinella sp. was employed as a biosorbent for removal of Ni(II) from aqueous solution. The biosorption kinetics and isotherms were investigated. The effect of several parameters, such as biosorbent dosage, contact time, initial concentration, pH and temperature, on biosorption process was evaluated. The kinetic studies indicated that the biosorption followed pseudo-second order kinetic model. Biosorption behaviour of Ni(II) on Circinella sp. was expressed by both Langmuir and Freundlich isotherms. The equilibrium data fit better to the Langmuir model compared to the Freundlich model in concentration range studied (1.0-3.0 mM). The thermodynamic parameters (Delta G(0), Delta H-0 and Delta S-0) were also determined, and it was found that the Ni(II) biosorption by Circinella sp. was spontaneous and endothermic in nature.