Yeast-As Bioremediator of Silver-Containing Synthetic Effluents

Yeast may be regarded as a cost-effective and environmentally friendly biosorbent for complex effluent treatment. The effect of pH, contact time, temperature, and silver concentration on metal removal from silver-containing synthetic effluents using was examined. The biosorbent before and after bios...

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Bibliographic Details
Published in:Bioengineering (Basel) 2023-03, Vol.10 (4), p.398
Main Authors: Zinicovscaia, Inga, Yushin, Nikita, Grozdov, Dmitrii, Rodlovskaya, Elena, Khiem, Le Hong
Format: Article
Language:English
Subjects:
Activation analysis
Adenosine triphosphatase
Adsorption
Bioengineering
Biomass
bioremediation
Biosorption
Breweries
Chemical elements
Effluents
Energy consumption
Energy value
Equilibrium
Experiments
Fourier transforms
Infrared analysis
Infrared spectroscopy
Isotherms
Membrane separation
Metal ions
Metals
Nanoparticles
Neutron activation analysis
pH effects
Potassium
Saccharomyces cerevisiae
Scanning electron microscopy
Silver
silver-containing effluents
Spectrum analysis
waste biomass
Water treatment
Yeast
Yeast fungi
Zinc
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Summary:Yeast may be regarded as a cost-effective and environmentally friendly biosorbent for complex effluent treatment. The effect of pH, contact time, temperature, and silver concentration on metal removal from silver-containing synthetic effluents using was examined. The biosorbent before and after biosorption process was analysed using Fourier-transform infrared spectroscopy, scanning electron microscopy, and neutron activation analysis. Maximum removal of silver ions, which constituted 94-99%, was attained at the pH 3.0, contact time 60 min, and temperature 20 °C. High removal of copper, zinc, and nickel ions (63-100%) was obtained at pH 3.0-6.0. The equilibrium results were described using Langmuir and Freundlich isotherm, while pseudo-first-order and pseudo-second-order models were applied to explain the kinetics of the biosorption. The Langmuir isotherm model and the pseudo-second-order model fitted better experimental data with maximum adsorption capacity in the range of 43.6-108 mg/g. The negative Gibbs energy values pointed at the feasibility and spontaneous character of the biosorption process. The possible mechanisms of metal ions removal were discussed. have all necessary characteristics to be applied to the development of the technology of silver-containing effluents treatment.
ISSN:2306-5354
2306-5354
DOI:10.3390/bioengineering10040398