| Autor: |
Gorobets, S. V., Karpenko, Yu. V., Kovalev, O. V., Olishevsky, V. V. |
| Zdroj: |
Naukovi visti NTUU - KPI; 2013, Vol. 89 Issue 3, p42-47, 6p |
| Abstrakt: |
This paper studies the sorption capacity of magnetically labeled biosorbents -- yeast cells Saccharomyces cerevisiae -- to remove iron ions (II). The study is conducted on model solutions and wastewater samples from Slavutych, Chernihiv region. We obtain magnetically treated biosorbents by modifying Saccharomyces cerevisiae baker yeast by magnetite nanoparticles. We perform modification by mechanical and multivertex magnetohydrodynamic mixing (MHDM) of yeasts' suspensions with magnetite nanoparticles. This paper presents the sorption isotherms of Fe(II) ions by magnetically labeled yeasts and electrokinetic potential of obtained biosorbents. We show that the sorption capacity of magnetically labeled yeast cells with magnetite nanoparticles, attached with multivertex MHDM, regarding iron ions is not reduced compared with biosorbents produced by mechanical mixing. We uncover the electrokinetic potential of magnetically labeled biosorbents before biosorption of Fe(II) cations. In addition, we reveal that the decrease of electrokinetic potential of magnetically labeled biosorbents suspension causes the reduction of its sorption capacity. [ABSTRACT FROM AUTHOR] |
| Databáze: |
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