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Lithium aluminate flotation by pH- and light-switchable collectors based on the natural product punicine.
Zgheib, Ali; Acker, Sophie; Fischer, Maximilian Hans; Namyslo, Jan C; Strube, Franziska; Rudolph, Martin; Fittschen, Ursula E A; Wollmann, Annett; Weber, Alfred P; Nieger, Martin; Schmidt, Andreas.
Afiliación
  • Zgheib A; Clausthal University of Technology, Institute of Organic Chemistry Leibnizstrasse 6 D-38678 Clausthal-Zellerfeld Germany schmidt@ioc.tu-clausthal.de.
  • Acker S; Clausthal University of Technology, Institute of Organic Chemistry Leibnizstrasse 6 D-38678 Clausthal-Zellerfeld Germany schmidt@ioc.tu-clausthal.de.
  • Fischer MH; Clausthal University of Technology, Institute of Organic Chemistry Leibnizstrasse 6 D-38678 Clausthal-Zellerfeld Germany schmidt@ioc.tu-clausthal.de.
  • Namyslo JC; Clausthal University of Technology, Institute of Organic Chemistry Leibnizstrasse 6 D-38678 Clausthal-Zellerfeld Germany schmidt@ioc.tu-clausthal.de.
  • Strube F; Helmholtz-Zentrum Dresden-Rossendorf, Helmholtz Institute Freiberg for Resource Technology Chemnitzer Str. 40 D-09599 Freiberg Germany.
  • Rudolph M; Helmholtz-Zentrum Dresden-Rossendorf, Helmholtz Institute Freiberg for Resource Technology Chemnitzer Str. 40 D-09599 Freiberg Germany.
  • Fittschen UEA; Clausthal University of Technology, Institute of Inorganic and Analytical Chemistry Arnold-Sommerfeld-Str. 4 D-38678 Clausthal-Zellerfeld Germany.
  • Wollmann A; Clausthal University of Technology, Institute of Particle Technology Leibnizstrasse 19 D-38678 Clausthal-Zellerfeld Germany.
  • Weber AP; Clausthal University of Technology, Institute of Particle Technology Leibnizstrasse 19 D-38678 Clausthal-Zellerfeld Germany.
  • Nieger M; University of Helsinki, Department of Chemistry P. O. Box 55 FIN-00014 Helsinki Finland.
  • Schmidt A; Clausthal University of Technology, Institute of Organic Chemistry Leibnizstrasse 6 D-38678 Clausthal-Zellerfeld Germany schmidt@ioc.tu-clausthal.de.
RSC Adv ; 14(13): 9353-9364, 2024 Mar 14.
Article en En | MEDLINE | ID: mdl-38510489
ABSTRACT
Derivatives of the natural product punicine [1-(2',5'-dihydroxyphenyl)pyridinium chloride] were developed as switchable collectors for the flotation of lithium-containing engineered artifical minerals (EnAMs). These EnAMs are e.g. formed by pyrometallurgical processing of end-of-life lithium-ion batteries. Depending on the pH value and the lighting conditions, punicines exist in water as cations, two different electrostatically neutral mesomeric betaines, anionic tripoles, radical cations or radical anions. The radical species form by photochemically induced disproportionation reactions. We prepared punicine derivatives introducing alkyl chains in the pyridinium moiety (4-methyl, 4-ethyl, 4-octyl and 4-undecanyl) to install hydrophobic groups and examined the recovery rates of the flotation of lithium aluminate (LiAlO2). We varied the lighting conditions (darkness, daylight, LED irradiation at λ = 390-400 nm) and the pH value, the collector's and frother's concentration, and the flotation time. With our collectors, recovery rates of lithium aluminate up to 90% were accomplished when the flotation was conducted in Hallimond tubes exposed to daylight at pH 11 in water.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: RSC Adv Año: 2024 Tipo del documento: Article Pais de publicación: Reino Unido
Texto completo
Añadir a Mi BVS
Imprimir
XML
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: RSC Adv Año: 2024 Tipo del documento: Article Pais de publicación: Reino Unido