| Title |
Nanohydrometallurgy with superparamagnetic nanoparticles for selective separation of lanthanum from a real spent catalyst |
| ID_Doc |
29148 |
| Authors |
Pavoski, G; Toma, HE; Espinosa, DCR; Tenório, JAS |
| Title |
Nanohydrometallurgy with superparamagnetic nanoparticles for selective separation of lanthanum from a real spent catalyst |
| Year |
2024 |
| Published |
Journal Of Material Cycles And Waste Management, 26.0, 5 |
| DOI |
10.1007/s10163-024-02020-7 |
| Abstract |
The development of new methodologies and sustainable processes is a priority in the field of chemical engineering and nanotechnology. In this study, via an easy route, the nanohydrometallurgy process was applied to recover La from a real spent catalyst. The synthesis of superparamagnetic iron nanoparticles (Si@FeNPs) with different precursors was evaluated. The average particle diameter value was smaller when using sulfate precursors. La acid leaching extracted 76% and required process adjustments. The nanohydrometallurgy process separated La from the Ni present in the leach solution with 6 cycles. Therefore, two processes were proposed. The first is obtaining a product with 97% of La and Al as a contaminant. The second with 99% La purity. Nanohydrometallurgy proved to be an innovative and sustainable process, with the recyclability of Si@FeNPs, obtaining La from a secondary source. In this way, this nanohydrometallurgy process meets the concepts of circular economy and encompasses sustainable development goals (SDGs) nine and twelve of the United Nations. |
| Author Keywords |
Nanohydrometallurgy; Magnetic separation; Recycling; Secondary sources |
| Index Keywords |
Index Keywords |
| Document Type |
Other |
| Open Access |
Open Access |
| Source |
Science Citation Index Expanded (SCI-EXPANDED) |
| EID |
WOS:001263438400003 |
| WoS Category |
Environmental Sciences |
| Research Area |
Environmental Sciences & Ecology |
| PDF |
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