Projects per year
Abstract
The removal of trivalent iron and aluminum was studied from synthetic Li-ion battery leach solution by phosphate and hydroxide precipitation (pH 2.5–4.25, t = 3 h, T = 60 °C). Phosphate precipitation exhibited both crystal nucleation initiation (pH 2 vs. pH 3) as well as complete (~ 99%) Fe and Al removal at lower pH compared to hydroxide precipitation (pH 3 vs. 3.5). The precipitation time of phosphate was shorter (40 min) than that of hydroxide precipitation (80 min). At pH 4 the loss of valuable metals (Li, Ni, Co) in the precipitate was negligible in the phosphate cake, whereas in the hydroxide process the co-precipitation was 4–5% for Li, Ni and Co. The filtration rate of phosphate precipitate was shown to be significantly faster. The presence of fluoride did not have any notable effect on phosphate precipitation, whereas in hydroxide precipitation, it potentially had a negative effect on aluminum extraction.
Original language | English |
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Article number | 21445 |
Number of pages | 12 |
Journal | Scientific Reports |
Volume | 13 |
Issue number | 1 |
DOIs | |
Publication status | Published - 5 Dec 2023 |
MoE publication type | A1 Journal article-refereed |
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Dive into the research topics of 'Fe3+ and Al3+ removal by phosphate and hydroxide precipitation from synthetic NMC Li-ion battery leach solution'. Together they form a unique fingerprint.Projects
- 1 Finished
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BATCircle2: Finland-based circular ecosystem of battery metals
Lundström, M. (Principal investigator), Karppinen, A. (Project Member), Revitzer, H. (Project Member), Sahlman, M. (Project Member), Lappalainen, H. (Project Member), Rinne, M. (Project Member), Chernyaev, A. (Project Member), Wang, Z. (Project Member), Partinen, J. (Project Member), Alajoki, J. (Project Member), Halli, P. (Project Member), Zou, Y. (Project Member), Wilson, B. (Project Member), Vänskä, J. (Project Member), Palomäki, H. (Project Member), Sibarani, D. (Project Member), Klemettinen, L. (Project Member), Liljanko, H. (Project Member) & Tran, H. (Project Member)
01/05/2021 → 31/08/2024
Project: Business Finland: Strategic centres for science, technology and innovation (SHOK)
Equipment
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Raw Materials Research Infrastructure
Karppinen, M. (Manager)
School of Chemical EngineeringFacility/equipment: Facility
Press/Media
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Research from Aalto University Provide New Insights into Alkalies (Fe3+ and Al3+ removal by phosphate and hydroxide precipitation from synthetic NMC Li-ion battery leach solution)
Lundström, M., Seisko, S., Louhi-Kultanen, M. & Zhang, J.
25/12/2023
1 item of Media coverage
Press/Media: Media appearance