Recovery of rare earth elements (Nd3+ and Dy3+) by using carbon-based adsorbents from spent tire rubber

Copyright © 2023 Elsevier Ltd. All rights reserved.

Bibliographische Detailangaben
Veröffentlicht in:Waste management (New York, N.Y.). - 1999. - 174(2024) vom: 15. Jan., Seite 451-461
1. Verfasser: Nogueira, M (VerfasserIn)
Weitere Verfasser: Matos, I, Bernardo, M, Tarelho, L A C, Ferraria, A M, Botelho do Rego, A M, Fonseca, I, Lapa, N
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2024
Zugriff auf das übergeordnete Werk:Waste management (New York, N.Y.)
Schlagworte:Journal Article Adsorption Char Circular economy Rare earth elements Tire rubber Rubber 9006-04-6 Metals, Rare Earth Charcoal mehr... 16291-96-6 Water 059QF0KO0R
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245 1 0 |a Recovery of rare earth elements (Nd3+ and Dy3+) by using carbon-based adsorbents from spent tire rubber 
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520 |a Two samples of spent tire rubber (rubber A and rubber B) were submitted to thermochemical conversion by pyrolysis process. A450, B450 and A900, B900 chars were obtained from rubber A and rubber B at 450 °C and 900 °C, respectively. The chars were then applied as recovery agents of Nd3+ and Dy3+ from aqueous solutions in mono and bicomponent solutions, and their performance was benchmarked with a commercial activated carbon. The chars obtained at 900 °C were the most efficient adsorbents for both elements with uptake capacities around 30 mg g-1. The chars obtained at 450 °C presented uptake capacities similar to the commercial carbon (≈ 11 mg g-1). A900 and B900 chars presented a higher availability of Zn ions that favored the ion exchange mechanism. It was found that Nd3+ and Dy3+ were adsorbed as oxides after Zn was released from silicate structures (Zn2SiO4). A900 char was further selected to be tested with Nd/Dy binary mixtures and it was found a trend to adsorb a slightly higher amount of Dy3+ due to its smaller ionic radius. The uptake capacity in bicomponent solutions was generally higher than for single component solutions due to the higher driving force triggered by the higher concentration gradient 
650 4 |a Journal Article 
650 4 |a Adsorption 
650 4 |a Char 
650 4 |a Circular economy 
650 4 |a Rare earth elements 
650 4 |a Tire rubber 
650 7 |a Rubber  |2 NLM 
650 7 |a 9006-04-6  |2 NLM 
650 7 |a Metals, Rare Earth  |2 NLM 
650 7 |a Charcoal  |2 NLM 
650 7 |a 16291-96-6  |2 NLM 
650 7 |a Water  |2 NLM 
650 7 |a 059QF0KO0R  |2 NLM 
700 1 |a Matos, I  |e verfasserin  |4 aut 
700 1 |a Bernardo, M  |e verfasserin  |4 aut 
700 1 |a Tarelho, L A C  |e verfasserin  |4 aut 
700 1 |a Ferraria, A M  |e verfasserin  |4 aut 
700 1 |a Botelho do Rego, A M  |e verfasserin  |4 aut 
700 1 |a Fonseca, I  |e verfasserin  |4 aut 
700 1 |a Lapa, N  |e verfasserin  |4 aut 
773 0 8 |i Enthalten in  |t Waste management (New York, N.Y.)  |d 1999  |g 174(2024) vom: 15. Jan., Seite 451-461  |w (DE-627)NLM098197061  |x 1879-2456  |7 nnns 
773 1 8 |g volume:174  |g year:2024  |g day:15  |g month:01  |g pages:451-461 
856 4 0 |u http://dx.doi.org/10.1016/j.wasman.2023.12.025  |3 Volltext 
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