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The annual demand on rare earth materials still increases for many applications. The present study focusses on recycling technologies of rare earth compound out and for luminescence materials at different light spectra. The purity specification allows only impurities in ppm‐range. A case study based on experimental and literature data is described. Different processing concepts are generated and optimized...
In recent years, a change from the fossil resources coal, oil, and gas to renewable energy sources is underway, whereby biomass from energy plants gains importance. In Germany, this biomass is mainly produced from corn, rape, and further cereals. A study is presented which focuses on the extraction and purification of selective components as a dual‐use concept besides energy production from biomass...
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