An innovative process was optimized to recover Co from portable Lithium Ion Batteries (LIB). Pilot scale physical pretreatment was performed to recover electrodic powder from LIB. Co was extracted from electrodic powder by a hydrometallurgical process including the following main stages: leaching (by acid reducing conditions), primary purification (by precipitation of metal impurities), solvent extraction with D2EPHA (for removal of metal impurities), solvent extraction with Cyanex 272 (for separation of cobalt from nickel), cobalt recovery (by precipitation of cobalt carbonate). Tests were separately performed to identify the optimal operating conditions for precipitation (pH 3.8 or 4.8), solvent extraction with D2EHPA (pH 3.8; Mn/D2EHPA = 4; 10% TBP; two sequential extractive steps) and solvent extraction with Cyanex 272 (pH 3.8; Cyanex/Cobalt = 4, 10% TBP, one extractive step). The sequence of optimized process stages was finally performed to obtain cobalt carbonate. Products with different degree of purity were obtained depending on the performed purification steps (precipitation with or without solvent extraction). 95% purity was achieved by implementation of the process including the solvent extraction stages with D2EHPA and Cyanex 272 and final washing for sodium removal. (C) 2015 Elsevier Ltd. All rights reserved.

Cobalt products from real waste fractions of end of life lithium ion batteries / Pagnanelli, Francesca; Moscardini, Emanuela; Altimari, Pietro; ABO ATIA, Thomas; Toro, Luigi. - In: WASTE MANAGEMENT. - ISSN 0956-053X. - STAMPA. - 51:(2016), pp. 214-221. [10.1016/j.wasman.2015.11.003]

Cobalt products from real waste fractions of end of life lithium ion batteries

PAGNANELLI, Francesca;MOSCARDINI, Emanuela;ALTIMARI, PIETRO;ABO ATIA, THOMAS;TORO, Luigi
2016

Abstract

An innovative process was optimized to recover Co from portable Lithium Ion Batteries (LIB). Pilot scale physical pretreatment was performed to recover electrodic powder from LIB. Co was extracted from electrodic powder by a hydrometallurgical process including the following main stages: leaching (by acid reducing conditions), primary purification (by precipitation of metal impurities), solvent extraction with D2EPHA (for removal of metal impurities), solvent extraction with Cyanex 272 (for separation of cobalt from nickel), cobalt recovery (by precipitation of cobalt carbonate). Tests were separately performed to identify the optimal operating conditions for precipitation (pH 3.8 or 4.8), solvent extraction with D2EHPA (pH 3.8; Mn/D2EHPA = 4; 10% TBP; two sequential extractive steps) and solvent extraction with Cyanex 272 (pH 3.8; Cyanex/Cobalt = 4, 10% TBP, one extractive step). The sequence of optimized process stages was finally performed to obtain cobalt carbonate. Products with different degree of purity were obtained depending on the performed purification steps (precipitation with or without solvent extraction). 95% purity was achieved by implementation of the process including the solvent extraction stages with D2EHPA and Cyanex 272 and final washing for sodium removal. (C) 2015 Elsevier Ltd. All rights reserved.
Li ion batteries; mechanical pretreatment; leaching; cobalt recovery; recycling
01 Pubblicazione su rivista::01a Articolo in rivista
Cobalt products from real waste fractions of end of life lithium ion batteries / Pagnanelli, Francesca; Moscardini, Emanuela; Altimari, Pietro; ABO ATIA, Thomas; Toro, Luigi. - In: WASTE MANAGEMENT. - ISSN 0956-053X. - STAMPA. - 51:(2016), pp. 214-221. [10.1016/j.wasman.2015.11.003]
File allegati a questo prodotto
File Dimensione Formato  
Pagnanelli_Cobalt_2016.pdf

solo gestori archivio

Note: full text - editor PDF
Tipologia: Versione editoriale (versione pubblicata con il layout dell'editore)
Licenza: Tutti i diritti riservati (All rights reserved)
Dimensione 785.02 kB
Formato Adobe PDF
785.02 kB Adobe PDF   Visualizza/Apri   Richiedi una copia

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/855541
Citazioni
  • ???jsp.display-item.citation.pmc??? 5
  • Scopus 105
  • ???jsp.display-item.citation.isi??? 94
social impact