>
Spotlight September 2023: Fishing for raw materials with proteins
The so-called rare earth elements such as neodymium, dysprosium or cerium are elements that are of great importance for the energy transition; among others they serve as components of magnets in generators for electric power generation, act as luminescent materials in energy-saving lamps or as part of the car exhaust catalytic converter. The global production of rare earth elements is currently strongly dominated by China. Separating the rare earth elements from each other and purifying them is considered particularly difficult.
English oak buds contain bacteria from which proteins called lanmodulins can be extracted. In a publication by American researchers, these proteins were studied for the separation and purification of rare earth elements. This could help to recover these elements from electronic scrap and thus no longer such large quantities of rare earth elements need to be imported. Besides, the protein-based purification processes would be much more environmentally friendly than conventional ones and thus also of interest for primary producers. Today the procedure is not yet ready for practice: Although the researchers report good separation rates (>98%) and yields (>99%) in the separation of dysprosium and neodymium, however, the rare earth concentrations that have been used are very low. Hence, this would still have to be significantly improved before it could be used in a feasible technical application, and the synthesis of the separating proteins is also a complex step.
Original Publication:
Mattocks, J.A., Jung, J.J., Lin, CY. et al. Enhanced rare-earth separation with a metal-sensitive lanmodulin dimer. Nature 618, 87–93 (2023). https://doi.org/10.1038/s41586-023-05945-5
Weitere Spotlights
Spotlight October 2021: Nanopesticides – a proposal for a risk assessment framework
The application of so-called “nanopesticides” (see also cross-sectional text Nanomaterials in plant protection products) is said to have two basic advantages: a smaller amount of pesticide is needed for the same agricultural area and the efficacy is improved. This is necessary to grow enough food for a still growing world population. However, this could also […]
Read moreSpotlight November 2023: Early Awareness and Action System for Advanced Materials (Early4AdMa)
Advanced materials hold immense potential to address global challenges such as environmental degradation, transformation of the energy sector, and development towards circularity. To harness their benefits while ensuring safety and sustainability, regulatory bodies, scientific communities, and industries have recognized the need for proactive approaches. The “Early4AdMa” system is a pre-regulatory risk governance tool for advanced […]
Read moreSpotlight August 2020: The nanoGRAVUR Grouping approach
In August, we would like to present a paper of the German BMBF project nanoGRAVUR. nanoGRAVUR dealt from 2015-2018 with the grouping of nanostructured materials with regard to occupational safety, consumer and environmental protection and risk mitigation. The approach is now described by the project partners in this paper.Due to the variety of synthetic nanomaterials and the numerous modifications (differences in size, shape, chemical composition and surface functionalization), the effort required to investigate effects and behaviour within the framework of regulatory requirements is…
Read moreSpotlight April 2021: Nanomaterials and Fake News – a commentary based on an example
In February 2021, the article “The invisible killer lurking in our consumer products” appeared, describing nanoparticles as a greater danger than Corona [1]. “The use of nanomaterials” would be “unregulated” and “nanomaterials are so small that they cannot be determined once they are part of a product”. So what is the truth of these statements? […]
Read more