Study on valuable metal incorporation in the Fe–Al precipitate during neutralization of LIB leach solution

Abstract The role of aluminum concentration and pH in the purification of waste Li-ion battery leach solution was investigated using NaOH and LiOH as neutralization agents ([H 2 SO 4 ] = 0.313 M, t = 6 h). Solution was prepared from synthetic chemicals to mimic real battery leach solution. Results d...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Alexander Chernyaev, Benjamin P. Wilson, Mari Lundström
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/e5f813a7127d43f282c66123bcbdb8b7
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:e5f813a7127d43f282c66123bcbdb8b7
record_format	dspace
spelling	oai:doaj.org-article:e5f813a7127d43f282c66123bcbdb8b72021-12-05T12:14:21ZStudy on valuable metal incorporation in the Fe–Al precipitate during neutralization of LIB leach solution10.1038/s41598-021-02019-22045-2322https://doaj.org/article/e5f813a7127d43f282c66123bcbdb8b72021-12-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-02019-2https://doaj.org/toc/2045-2322Abstract The role of aluminum concentration and pH in the purification of waste Li-ion battery leach solution was investigated using NaOH and LiOH as neutralization agents ([H 2 SO 4 ] = 0.313 M, t = 6 h). Solution was prepared from synthetic chemicals to mimic real battery leach solution. Results demonstrate that pH (3.5–5.5) has a significant effect on the precipitation of metals (Fe, Al, Ni, Cu, Co, Mn, and Li), whereas higher temperature (T = 30 and 60 °C) decreases the precipitation pH of metals. Iron and aluminum were both found to precipitate at ca. pH 4 and the presence of aluminum in PLS clearly decreased the separation efficiency of Fe vs. active material metals (Ni, Co, Li). In the absence of dissolved aluminum, Fe precipitated already at pH 3.5 and did not result in the co-precipitation of other metals. Additionally, the Al-free slurry had a superior filtration performance. However, aluminum concentrations of 2 and 4 g/L were found to cause loss of Ni (2–10%), Co (1–2%) and Li (2–10%) to the Fe-Al hydroxide cake at pH 4. The use of LiOH (vs. NaOH) resulted in 50% lower co-precipitation of Ni, Co and Li. Overall, these results demonstrate that hydroxide precipitation can be an effective method to remove iron from battery waste leach solutions at aluminum concentrations of < 2 g/L only. Although the highest level of lithium loss in the cake was found at pH 4, the loss was shown to decrease with increasing pH.Alexander ChernyaevBenjamin P. WilsonMari LundströmNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-8 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Alexander Chernyaev Benjamin P. Wilson Mari Lundström Study on valuable metal incorporation in the Fe–Al precipitate during neutralization of LIB leach solution
description	Abstract The role of aluminum concentration and pH in the purification of waste Li-ion battery leach solution was investigated using NaOH and LiOH as neutralization agents ([H 2 SO 4 ] = 0.313 M, t = 6 h). Solution was prepared from synthetic chemicals to mimic real battery leach solution. Results demonstrate that pH (3.5–5.5) has a significant effect on the precipitation of metals (Fe, Al, Ni, Cu, Co, Mn, and Li), whereas higher temperature (T = 30 and 60 °C) decreases the precipitation pH of metals. Iron and aluminum were both found to precipitate at ca. pH 4 and the presence of aluminum in PLS clearly decreased the separation efficiency of Fe vs. active material metals (Ni, Co, Li). In the absence of dissolved aluminum, Fe precipitated already at pH 3.5 and did not result in the co-precipitation of other metals. Additionally, the Al-free slurry had a superior filtration performance. However, aluminum concentrations of 2 and 4 g/L were found to cause loss of Ni (2–10%), Co (1–2%) and Li (2–10%) to the Fe-Al hydroxide cake at pH 4. The use of LiOH (vs. NaOH) resulted in 50% lower co-precipitation of Ni, Co and Li. Overall, these results demonstrate that hydroxide precipitation can be an effective method to remove iron from battery waste leach solutions at aluminum concentrations of < 2 g/L only. Although the highest level of lithium loss in the cake was found at pH 4, the loss was shown to decrease with increasing pH.
format	article
author	Alexander Chernyaev Benjamin P. Wilson Mari Lundström
author_facet	Alexander Chernyaev Benjamin P. Wilson Mari Lundström
author_sort	Alexander Chernyaev
title	Study on valuable metal incorporation in the Fe–Al precipitate during neutralization of LIB leach solution
title_short	Study on valuable metal incorporation in the Fe–Al precipitate during neutralization of LIB leach solution
title_full	Study on valuable metal incorporation in the Fe–Al precipitate during neutralization of LIB leach solution
title_fullStr	Study on valuable metal incorporation in the Fe–Al precipitate during neutralization of LIB leach solution
title_full_unstemmed	Study on valuable metal incorporation in the Fe–Al precipitate during neutralization of LIB leach solution
title_sort	study on valuable metal incorporation in the fe–al precipitate during neutralization of lib leach solution
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/e5f813a7127d43f282c66123bcbdb8b7
work_keys_str_mv	AT alexanderchernyaev studyonvaluablemetalincorporationinthefealprecipitateduringneutralizationoflibleachsolution AT benjaminpwilson studyonvaluablemetalincorporationinthefealprecipitateduringneutralizationoflibleachsolution AT marilundstrom studyonvaluablemetalincorporationinthefealprecipitateduringneutralizationoflibleachsolution
_version_	1718372166874955776

Study on valuable metal incorporation in the Fe–Al precipitate during neutralization of LIB leach solution

Ejemplares similares