Fungal biosorption of cadmium(II) onto Fennelia nivea from aqueous solution: equilibrium, thermodynamics, and kinetics

ARACAGÖK Y. D., Ogun E., TORUN M., Akyil H., CİHANGİR N., Sanin S. L.

DESALINATION AND WATER TREATMENT, cilt.222, ss.386-393, 2021 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 222
  • Basım Tarihi: 2021
  • Doi Numarası: 10.5004/dwt.2021.27091
  • Dergi Adı: DESALINATION AND WATER TREATMENT
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Aqualine, Aquatic Science & Fisheries Abstracts (ASFA), Biotechnology Research Abstracts, CAB Abstracts, Environment Index, Geobase, Pollution Abstracts, Veterinary Science Database, Civil Engineering Abstracts
  • Sayfa Sayıları: ss.386-393
  • Anahtar Kelimeler: Biosorption, Cadmium, Fennelia nivea, Heavy metal removal, Adsorption kinetics, Adsorption thermodynamics, TRAMETES-VERSICOLOR, CA-ALGINATE, REMOVAL, ADSORPTION, LEAD(II), BIOMASS, PB(II), CD(II), CR(VI), COPPER
  • Hacettepe Üniversitesi Adresli: Evet

Özet

Cadmium(II) is an important ecotoxic pollutant and may cause health problems if accumulated in the human body. This study focused on the removal of cadmium(II) from aqueous solutions using newly isolated fungus dry mass as the adsorber. The fungus was isolated from soil and identified as Fenellia nivea, based on 18S rRNA sequence analysis. Cadmium(II) biosorption studies were carried out as a function of pH, biomass dose, initial metal concentration, contact time, and temperature. The pH of the aqueous solution strongly influenced the removal percent of Cd(II). The highest cadmium removal yield was obtained at pH 7 (4.9 mg/g) as well as below pH 4, very low yield biosorption of Cd(II) was observed. In the first 5 min, almost 50% Cd(II) ions were removed from the solution and reached equilibrium within 1,440 min at pH 7. Adsorption isotherm follows Langmuir model as well as the dimensionless constant is zero that corresponds to the irreversible adsorption of Cd(II) ions on biomass. The reaction rate constant for the pseudo-second-order adsorption process was found as 3.74 x 10(-3) g/mg min. The adsorption process was determined as endothermic and spontaneous with negative standard Gibbs energy change.