---
_id: '62857'
abstract:
- lang: eng
  text: 'The recovery of rare earth metals from secondary sources has attracted much
    attention due to their ever expanding demand in the high-tech industry. The studies
    reported here focus on the hydrometallurgical recovery of lanthanum and cerium
    from spent fluid catalytic cracking (FCC) catalysts in a two-step process: leaching
    with nitric acid and solvent extraction by tri-n-butyl phosphate (TBP) and di(2-ethylhexyl)phosphoric
    acid (D2EHPA). The experiments show a high dissolution yield of about 93% lanthanum
    and 42% cerium in a single leaching step with 2 M (126 g/L) HNO3 at 80 °C; only
    11% aluminum has been dissolved simultaneously. In the subsequent solvent extraction
    step the best results for this leach liquor could be achieved using a 1:1 mixture
    of 25% (v/v) TBP (0.92 M) and 25% (v/v) D2EHPA (0.76 M) in n-decane without the
    need for any pH adjustment. In that case La(III) and Ce(III) can be extracted
    with 60% and 74% yield respectively in one stage from the majority of accompanying
    matrix elements. In particular no extraction of Al(III) could be observed under
    these conditions.'
author:
- first_name: M.
  full_name: Wenzel, M.
  last_name: Wenzel
- first_name: Kathleen
  full_name: Schnaars, Kathleen
  id: '117735'
  last_name: Schnaars
- first_name: N.
  full_name: Kelly, N.
  last_name: Kelly
- first_name: L.
  full_name: Götzke, L.
  last_name: Götzke
- first_name: S. M.
  full_name: Robles, S. M.
  last_name: Robles
- first_name: K.
  full_name: Kretschmer, K.
  last_name: Kretschmer
- first_name: Phuc Nguyen
  full_name: Le, Phuc Nguyen
  last_name: Le
- first_name: Dang Thanh
  full_name: Tung, Dang Thanh
  last_name: Tung
- first_name: Nguyen Huu
  full_name: Luong, Nguyen Huu
  last_name: Luong
- first_name: Nguyen Anh
  full_name: Duc, Nguyen Anh
  last_name: Duc
- first_name: Dang Van
  full_name: Sy, Dang Van
  last_name: Sy
- first_name: K.
  full_name: Gloe, K.
  last_name: Gloe
- first_name: J. J.
  full_name: Weigand, J. J.
  last_name: Weigand
citation:
  ama: 'Wenzel M, Schnaars K, Kelly N, et al. Hydrometallurgical Recovery of Rare
    Earth Metals from Spent FCC Catalysts. In: <i>Rare Metal Technology 2016</i>.
    Springer International Publishing; 2016. doi:<a href="https://doi.org/10.1007/978-3-319-48135-7_4">10.1007/978-3-319-48135-7_4</a>'
  apa: Wenzel, M., Schnaars, K., Kelly, N., Götzke, L., Robles, S. M., Kretschmer,
    K., Le, P. N., Tung, D. T., Luong, N. H., Duc, N. A., Sy, D. V., Gloe, K., &#38;
    Weigand, J. J. (2016). Hydrometallurgical Recovery of Rare Earth Metals from Spent
    FCC Catalysts. In <i>Rare Metal Technology 2016</i>. Springer International Publishing.
    <a href="https://doi.org/10.1007/978-3-319-48135-7_4">https://doi.org/10.1007/978-3-319-48135-7_4</a>
  bibtex: '@inbook{Wenzel_Schnaars_Kelly_Götzke_Robles_Kretschmer_Le_Tung_Luong_Duc_et
    al._2016, place={Cham}, title={Hydrometallurgical Recovery of Rare Earth Metals
    from Spent FCC Catalysts}, DOI={<a href="https://doi.org/10.1007/978-3-319-48135-7_4">10.1007/978-3-319-48135-7_4</a>},
    booktitle={Rare Metal Technology 2016}, publisher={Springer International Publishing},
    author={Wenzel, M. and Schnaars, Kathleen and Kelly, N. and Götzke, L. and Robles,
    S. M. and Kretschmer, K. and Le, Phuc Nguyen and Tung, Dang Thanh and Luong, Nguyen
    Huu and Duc, Nguyen Anh and et al.}, year={2016} }'
  chicago: 'Wenzel, M., Kathleen Schnaars, N. Kelly, L. Götzke, S. M. Robles, K. Kretschmer,
    Phuc Nguyen Le, et al. “Hydrometallurgical Recovery of Rare Earth Metals from
    Spent FCC Catalysts.” In <i>Rare Metal Technology 2016</i>. Cham: Springer International
    Publishing, 2016. <a href="https://doi.org/10.1007/978-3-319-48135-7_4">https://doi.org/10.1007/978-3-319-48135-7_4</a>.'
  ieee: 'M. Wenzel <i>et al.</i>, “Hydrometallurgical Recovery of Rare Earth Metals
    from Spent FCC Catalysts,” in <i>Rare Metal Technology 2016</i>, Cham: Springer
    International Publishing, 2016.'
  mla: Wenzel, M., et al. “Hydrometallurgical Recovery of Rare Earth Metals from Spent
    FCC Catalysts.” <i>Rare Metal Technology 2016</i>, Springer International Publishing,
    2016, doi:<a href="https://doi.org/10.1007/978-3-319-48135-7_4">10.1007/978-3-319-48135-7_4</a>.
  short: 'M. Wenzel, K. Schnaars, N. Kelly, L. Götzke, S.M. Robles, K. Kretschmer,
    P.N. Le, D.T. Tung, N.H. Luong, N.A. Duc, D.V. Sy, K. Gloe, J.J. Weigand, in:
    Rare Metal Technology 2016, Springer International Publishing, Cham, 2016.'
date_created: 2025-12-04T12:15:35Z
date_updated: 2025-12-04T12:19:23Z
department:
- _id: '985'
doi: 10.1007/978-3-319-48135-7_4
extern: '1'
language:
- iso: eng
place: Cham
publication: Rare Metal Technology 2016
publication_identifier:
  isbn:
  - '9783319486161'
  - '9783319481357'
publication_status: published
publisher: Springer International Publishing
quality_controlled: '1'
status: public
title: Hydrometallurgical Recovery of Rare Earth Metals from Spent FCC Catalysts
type: book_chapter
user_id: '117735'
year: '2016'
...