Silver and gold ions recovery from batch systems using Spirulina platensis biomass

• Autorzy: Cepoi Liliana , Zinicovscaia Inga , Chiriac Tatiana , Rudi Liudmila , Yushin Nikita , Miscu Vera

Identyfikatory

DOI

10.1515/eces-2019-0029

Warianty tytułu

PL

Odzyskiwanie jonów srebra i złota z roztworów z wykorzystaniem biomasy Spirulina platensis

• Języki publikacji: EN

Abstrakty

EN

In order to assess ability of Spirulina platensis to recover silver and gold ions from the environment the bioaccumulation of silver and gold ions and their effect on growth, proteins and carbohydrates content of Spirulina platensis biomass was studied. Silver nitrate (AgNO₃) in concentration range 0.01-1 mg/dm³ and tetrachloroaurate Na[AuCl₄] in concentration range 18.5-370 mg/dm³ were added as component of the Spirulina platensis cultivation medium. In case of silver two cultivation media were studied: standard and Cl-free. The process of silver and gold uptake was traced using neutron activation analysis. Presence of silver ions in standard cultivation medium reduced biomass productivity by 66 %, while in Cl-free biomass productivity was reduced by 11.8 % only. The reduction of proteins content by 30 % in Cl-free medium and by 19 % in standard medium was also observed. The experiments showed that in case of gold ions loading, the biomass productivity and protein content were reduced only at high Na[AuCl₄] concentration in the medium. The behaviour of carbohydrates content change was similar under silver and gold loadings: decrease at low metal concentration followed by increase at high metal concentrations. Scanning electron microscopy allowed observation of spherical metal nanoparticles, which were formed extracellularly during silver and gold bioaccumulation. Spirulina platensis can be used for recovery of precious metals as well as metal nanoparticles production.

Słowa kluczowe

EN

Spirulina platensis; silver; gold; nanoparticles; protein; carbohydrate; neutron activation analysis

PL

Spirulina platensis; srebro; złoto; nanocząstki; białko; węglowodany; analiza aktywacji neutronów

• Wydawca: Towarzystwo Chemii i Inżynierii Ekologicznej
• Czasopismo: Ecological Chemistry and Engineering. S
• Rocznik: 2019
• Tom: Vol. 26, nr 2
• Strony: 229--240
• Opis fizyczny: Bibliogr. 25 poz., rys., wykr.

Twórcy

autor

Cepoi Liliana

• Institute of Microbiology and Biotechnology, Academiei Str. 1, 2028 Chisinau, R. Moldova
• University of Academy of Sciences of Moldova, Academiei Str. 3/1, 2028 Chisinau, R. Moldova

autor

Zinicovscaia Inga

• Joint Institute for Nuclear Research, Joliot-Curie Str. 6, 1419890 Dubna, Russia
• Horia Hulubei National Institute for R&D in Physics and Nuclear Engineering, Reactorului Str. 30, MG-6, Bucharest - Magurele, Romania

autor

Chiriac Tatiana

• Institute of Microbiology and Biotechnology, Academiei Str. 1, 2028 Chisinau, R. Moldova

autor

Rudi Liudmila

• Institute of Microbiology and Biotechnology, Academiei Str. 1, 2028 Chisinau, R. Moldova

autor

Yushin Nikita

• Joint Institute for Nuclear Research, Joliot-Curie Str. 6, 1419890 Dubna, Russia

autor

Miscu Vera

• Institute of Microbiology and Biotechnology, Academiei Str. 1, 2028 Chisinau, R. Moldova

Bibliografia

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Uwagi

PL

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).