Cyanobacteria Arthospira platensis as an Effective Tool for Gadolinium Removal from Wastewater

Nikita Yushin, Inga Zinicovscaia (), Liliana Cepoi, Tatiana Chiriac, Ludmila Rudi and Dmitrii Grozdov
Additional contact information
Nikita Yushin: Joint Institute for Nuclear Research, 141980 Dubna, Russia
Inga Zinicovscaia: Joint Institute for Nuclear Research, 141980 Dubna, Russia
Liliana Cepoi: Institute of Microbiology and Biotechnology, Technical University of Moldova, 2028 Chisinau, Moldova
Tatiana Chiriac: Institute of Microbiology and Biotechnology, Technical University of Moldova, 2028 Chisinau, Moldova
Ludmila Rudi: Institute of Microbiology and Biotechnology, Technical University of Moldova, 2028 Chisinau, Moldova
Dmitrii Grozdov: Joint Institute for Nuclear Research, 141980 Dubna, Russia

Clean Technol., 2023, vol. 5, issue 2, 1-14

Abstract: The biosorption and bioaccumulation of gadolinium by Arthospira platensis in batch experiments was examined. In biosorption experiments, the influence of pH, gadolinium concentration, time of contact and temperature on Arthospira platensis sorption capacity was investigated. The maximum biosorption capacity of 101 mg/g was attained at a pH of 3.0 and temperature of 20 °C. A pseudo-first-order model was applicable to describe the kinetics of the biosorption and the Freundlich model to explain the equilibrium of the process. In bioaccumulation experiments, besides the examination of the gadolinium uptake by Arthospira platensis, its effect on biomass productivity as well as the content of proteins, lipids, carbohydrates and pigments was assessed. The addition of gadolinium in the cultivation medium resulted in the increase in biomass productivity and the content of MDA and, at the same time, in the reduction in the amount of proteins and carbohydrates. The content of other monitored parameters did not change significantly. The water extracts obtained from Arthospira platensis showed a higher antiradical activity against the ABTS cation radical in comparison with ethanolic extracts. Arthospira platensis is of interest for the development of the technology of gadolinium-contaminated wastewater remediation.

Keywords: Arthospira platensis; gadolinium; removal; biosorption; bioaccumulation (search for similar items in EconPapers)
JEL-codes: Q2 Q3 Q4 Q5 (search for similar items in EconPapers)
Date: 2023
References: View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.mdpi.com/2571-8797/5/2/32/pdf (application/pdf)
https://www.mdpi.com/2571-8797/5/2/32/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jcltec:v:5:y:2023:i:2:p:32-651:d:1148724

Access Statistics for this article

Clean Technol. is currently edited by Ms. Shary Song

More articles in Clean Technol. from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().