Spirulina platensis as renewable accumulator for heavy metals accumulation from multi-element synthetic effluents
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CEPOI, Liliana; ZINICOVSCAIA, Inga; RUDI, Ludmila; CHIRIAC, Tatiana; MISCU, Vera; DJUR (MAXACOVA), Svetlana; STRELKOVA, Ludmila; GROZDOV, D. Spirulina platensis as renewable accumulator for heavy metals accumulation from multi-element synthetic effluents. In: Environmental Science and Pollution Research. 2020, nr. 25(27), p. 0. ISSN 0944-1344.
10.1007/s11356-020-09447-z
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Environmental Science and Pollution Research
Numărul 25(27) / 2020 / ISSN 0944-1344 /ISSNe 1614-7499

Spirulina platensis as renewable accumulator for heavy metals accumulation from multi-element synthetic effluents


DOI: 10.1007/s11356-020-09447-z
Pag. 0-0

Cepoi Liliana12, Zinicovscaia Inga345, Rudi Ludmila1, Chiriac Tatiana1, Miscu Vera1, Djur (Maxacova) Svetlana1, Strelkova Ludmila3, Grozdov D3
 
1 Institute of Microbiology and Biotechnology ,
2 State University „Dimitrie Cantemir”,
3 Joint Institute of Nuclear Research,
4 Institutul Naţional de Fizică şi Inginerie Nucleară "Horia Holubei",
5 Institute of Chemistry
 
Disponibil în IBN: 27 iulie 2020


Rezumat

Metal accumulation by Spirulina platensis from synthetic effluents with the following chemical composition: Cr/Fe, Cr/Fe/Ni, Cr/Fe/Ni/Zn, and Cr/Fe/Ni/Zn/Cu during repeated cultivation cycle was investigated. Metal ions in different concentrations were added to the culture medium at the exponential and stationary phases of biomass growth and their uptake by biomass was traced using neutron activation analysis. The effect of metal ions on biomass and main biochemical components (proteins, carbohydrates, lipids, phycobilins, and β-carotene) was monitored. S. platensis keeps high metal accumulation capacity during 2–3 cultivation cycles, while the metal ions were added in the stationary phase of its growth. By adding metals in the exponential phase of growth in the following concentrations: 10 mg/L of chromium (VI), 5 mg/L of iron, 2 mg/L of zinc, nickel, and copper, Spirulina platensis acted as renewable accumulator only in Cr/Fe system. It maintained the accumulation capacity during three cultivation cycles when exposed to lower concentrations of metal ions. Its ability to accumulate metal ions during several cultivation cycles was ensured by the maintenance of the optimal level of proteins and lipid in biomass. 

Cuvinte-cheie
Biochemical components, Metal bioaccumulation, neutron activation analysis, Renewable accumulator, Spirulina platensis