Study of chemistry of CR(VI)/CR(III) biosorption from batch solutions and electroplating industrial effluent using cyanobacterium spirulina platensis
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YUSHIN , Nikita, ZINICOVSCAIA, Inga, CEPOI, Liliana, CHIRIAC, Tatiana, MITINA, Tatiana. Study of chemistry of CR(VI)/CR(III) biosorption from batch solutions and electroplating industrial effluent using cyanobacterium spirulina platensis. In: Microbial Biotechnology, Ed. 4, 11-12 octombrie 2018, Chișinău. Chișinău, Republica Moldova: Institutul de Microbiologie şi Biotehnologie, 2018, Ediția 4, p. 98. ISBN 978-9975-3178-8-7.
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Microbial Biotechnology
Ediția 4, 2018
Conferința "Microbial Biotechnology"
4, Chișinău, Moldova, 11-12 octombrie 2018

Study of chemistry of CR(VI)/CR(III) biosorption from batch solutions and electroplating industrial effluent using cyanobacterium spirulina platensis


Pag. 98-98

Yushin Nikita12, Zinicovscaia Inga134, Cepoi Liliana5, Chiriac Tatiana5, Mitina Tatiana4
 
1 Joint Institute of Nuclear Research,
2 International University „Dubna",
3 Horia Hulubei National Institute for Physics and Nuclear Engineering,
4 Institute of Chemistry,
5 Institute of Microbiology and Biotechnology
 
Disponibil în IBN: 19 februarie 2019



Teza

The biosorption of Cr(III)-Cr(VI) from aqueous solutions on dry Spirulina platensis biomass was tested under laboratory conditions as a function of pH, initial metal ion concentration, biomass dosage, time and temperature. Optimum adsorption pH values of Cr(III) and Cr(VI) were determined as 4.0 and 2.0, respectively. The Langmuir adsorption isotherm model fitted well the sorption equilibrium of the experimental data obtained for Cr(III), while Freundlich isotherm fitted better data obtained for Cr(VI). The kinetic data were best described using the pseudo second-order kinetic model (R2> 0.99). The adsorption process was exothermic and the values of thermodynamic parameters of the process were calculated. Spirulina platensis biomass was also used as a biosorbent for the removal of Cr(VI) from electroplating industry effluent as a function of biosorbent dosage and contact time.

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