Abstract
Abstract
Whilst the biosorption of metal ions by phototrophic (micro)organisms has been demonstrated in earlier and more recent research, the isolation of rare earth elements (REEs) from highly dilute aqueous solutions with this type of biomass remains largely unexplored. Therefore, the selective binding abilities of two microalgae (Calothrix brevissima, Chlorella kessleri) and one moss (Physcomitrella patens) were examined using Neodym and Europium as examples. The biomass of P. patens showed the highest sorption capacities for both REEs (Nd3+: 0.74 ± 0.05 mmol*g−1; Eu3+: 0.48 ± 0.05 mmol*g−1). A comparison with the sorption of precious metals (Au3+, Pt4+) and typical metal ions contained in wastewaters (Pb2+, Fe2+, Cu2+, Ni2+), which might compete for binding sites, revealed that the sorption capacities for Au3+ (1.59 ± 0.07 mmol*g−1) and Pb2+ (0.83 ± 0.02 mmol*g−1) are even higher. Although different patterns of maximum sorption capacities for the tested metal ions were observed for the microalgae, they too showed the highest affinities for Au3+, Pb2+, and Nd3+. Nd-sorption experiments in the pH range from 1 to 6 and the recorded adsorption isotherms for this element showed that the biomass of P. patens has favourable properties as biosorbent compared to the microalgae investigated here. Whilst the cultivation mode did not influence the sorption capacities for the target elements of the two algal species, it had a great impact on the properties of the moss. Thus, further studies are necessary to develop effective biosorption processes for the recovery of REEs from alternative and so far unexploited sources.
Key points
• The highest binding capacity for selected REEs was registered for P. patens.
• The highest biosorption was found for Au and the biomass of the examined moss.
• Biosorption capacities of P. patens seem to depend on the cultivation mode.
Funder
Bayerisches Staatsministerium für Umwelt und Verbraucherschutz
Publisher
Springer Science and Business Media LLC
Subject
Applied Microbiology and Biotechnology,General Medicine,Biotechnology
Reference43 articles.
1. Ambaye TG, Vaccari M, Castro FD, Prasad S, Rtimi S (2020) Emerging technologies for the recovery of rare earth elements (REEs) from the end-of-life electronic wastes: a review on progress, challenges, and perspectives. Environ Sci Pollut Res 27:36052–36074. https://doi.org/10.1007/s11356-020-09630-2
2. Andrès Y, Texier AC, Le Cloirec P (2003) Rare earth elements removal by microbial biosorption: a review. Environ Technol 24(11):1367–1375. https://doi.org/10.1080/09593330309385681
3. Bulgariu D, Bulgariu L (2012) Equilibrium and kinetics studies of heavy metal ions biosorption on green algae waste biomass. Bioresour Technol 103(1):489–493
4. Chojnacka K, Chojnacki A, Górecka H (2005) Biosorption of Cr3+, Cd2+ and Cu2+ ions by blue-green algae Spirulina sp.: kinetics, equilibrium and the mechanism of the process. Chemosphere 59(1):75–84. https://doi.org/10.1016/j.chemosphere.2004.10.005
5. European Commission (2017) Communication from the Commission to the European Parliament, the Council, The European Economic and Social Committee and the Committee of the Regions on the list of critical low materials for the EU. https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:52017DC0490 Accessed on 17.02.2021.
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