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Multi-cation biosorption bychlorella kessleri

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Saeid A., Chojnacka K.
Open Chemistry
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2015
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vol. 13
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issue 1
EN
This paper discusses the biosorption in a multi-cation system as an example of advances in the method of ions removal/binding to the biomass. Biosorption experiments were conducted on Chlorella kessleri biomass. The ions used in the experiment were Co(II), Cu(II), Mn(II) and Zn(II) and had the following configurations: binary, ternary and quaternary system. Also, the effect of the following anions Cl-, NO3-, SO42- on the biosorption process in the quaternary system (initial concentration of each ion was 0−300 mg L-1) was examined. The affinity order determined in the experiment was as follows: Cu(II)>Zn(II)>Mn(II)>Co(II). At higher concentrations of Cu(II) cations, the strong competition effect between Cu(II) cations with the remaining cations was observed. The modified Langumir competition model was proposed to support the biosorption method in the description of the experimental data of inhibited metal ions biosorption. After the influence of anions was examined, the highest total biosorption capacity was obtained for 1:1:2 system (Cl-: NO3- : SO42-).
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Biodegradation of Benzo[a]Pyrene through the use of algae

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Takáčová A., Smolinská M., Ryba J., Mackuľak T., Jokrllová J., Hronec P., Čík G.
Open Chemistry
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2014
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vol. 12
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issue 11
1133-1143
EN
In this work for disposal of the biologically hard decomposed pollutant Benzo[a]Pyrene (BaP) photooxidation Chlorella kessleri was used. The simulation model system under the different experimental conditions (varying biomass and light intensity) was evaluated. For quantitative analysis of the decrease in BaP, GC/MS technique was used. The highest degradation efficiency was achieved in the case of biomass from the culture of live algae (29%) and light intensity at level of 13.5 W m−2. When the dry biomass was used, degradation under the same conditions was lower because of lack of enzymatic activity in the system.
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