Special Issue "Utilization of Industrial By-Products—Recovery of Rare Earth Elements"

A special issue of Metals (ISSN 2075-4701).

Deadline for manuscript submissions: 30 November 2020.

Special Issue Editor

Prof. Maria Ochsenkuhn-Petropoulou
Guest Editor
School of Chemical Engineering, National Technical University Athens, Department of Chemical Sciences,Laboratory of Inorganic and Analytical Chemistry, Iroon Polytechneiou 9, Zographou Campus, 15780 Athens, Greece
Interests: utilization of industrial by-products in laboratory and pilot plant scale; recovery of rare earth elements and in particular of scandium from bauxite residue; speciation of metals and metalloids; preparation and characterization of superconducting powders and coatings; aerosol research in atmosphere; aerosol emissions from car catalysts exhaust and from burning of biomass; quality control of surface water and groundwater using modern analytical techniques

Special Issue Information

Dear Colleagues,

An industrial by-product is a production residue from an industrial process that is not a waste, with a minor net realizable value (NRV) when compared with the main products. However, a by- product can be useful and marketable. Rare Earth Elements (REEs), including Sc, Y, and the lanthanides, are elements of high techno-economical interest because of their use in high-tech materials and modern applications. The European Commission considers the REEs as the most critical raw materials group, due to their highest supply risk and their economic importance. As  economically exploitable minerals containing  REEs are very scarce, the available stockpiles have decreased and the recovery of REEs from  their deposits is difficult due to the coexistence of radioactive elements; therefore, it is necessary to investigate the potential to recover REEs from different  industrial by-products. These industrial streams contain relatively low concentrations of REEs in comparison to primary ores, but large volumes are available, and therefore they could become economically attractive secondary sources of REEs. This Special Issue aims to publish papers dealing with the recovery of REEs from different industrial-by products, such as slags produced by pyro-metallurgical metal recycling processes, bauxite residue (red mud), phosphogypsum, mine tailings, industrial wastewater, and others. The processes described have to be economically viable, environmentally friendly, and have the possibility to be scaled up.

Prof. Maria Ochsenkuhn-Petropoulou
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All papers will be peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Metals is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 1600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.


  • rare earth elements recovery
  • industrial by-products utilization
  • slag valorization
  • bauxite residue
  • mine tailings
  • phosphogypsum

Published Papers

This special issue is now open for submission.
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