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Recovery of lanthanides from hydrocarbon cracking spent catalyst through chemical and biotechnological strategies.
Azevedo, Daniele M F; Silva, Jessee A S; Servulo, Eliana F C; Frescura, Vera L A; Dognini, Jocinei; Oliveira, Fernando J S.
Afiliação
  • Azevedo DMF; a Department of Biochemical Engineering, School of Chemistry , Federal University of Rio de Janeiro , Rio de Janeiro , Brazil.
  • Silva JAS; b Department of Chemistry , Federal University of Santa Catarina , Florianópolis , Brazil.
  • Servulo EFC; a Department of Biochemical Engineering, School of Chemistry , Federal University of Rio de Janeiro , Rio de Janeiro , Brazil.
  • Frescura VLA; b Department of Chemistry , Federal University of Santa Catarina , Florianópolis , Brazil.
  • Dognini J; c Senai Institute of Environmental Technology , Blumenau , Brazil.
  • Oliveira FJS; d Petróleo Brasileiro SA., Gerência de Resíduos e Áreas Impactadas , Brazil.
J Environ Sci Health A Tox Hazard Subst Environ Eng ; 54(7): 686-693, 2019.
Article em En | MEDLINE | ID: mdl-30821628
The aim of this work is to evaluate the rare earth elements (REEs) recovery from fluid catalytic cracking spent catalyst (FCC-SC) by chemical and biochemical strategies while also examining a route for the valorization of biodiesel-derived glycerin (RG), which is presently unprofitable to refine. Recovery tests for REEs were performed with no pretreatment of the FCC-SC. A chemical leaching investigation was carried out using HCl, HNO3, NaOH, CaCl2 and citric acid aqueous solutions (1 mol L-1, at 30, 50, 60 or 70 ± 1 °C). The leaching tests carried out with 1 mol L-1 citric acid at 50 °C provided the best recovery of La (27%). Subsequent bioleaching tests were carried out with four strains of Yarrowia lipolytica to evaluate their potential to produce organic acids using RG as the main carbon source. The FCC-SC contains some REEs, predominantly La. Remarkable biorecovery rates for REEs (namely, La (53%), Ce and Nd (both 99%)) were achieved using the Y. lipolytica IM-UFRJ 50678 fermented medium at 50 °C. Thus, here, a sustainable approach to recovering metals from spent cracking catalyst using RG under low-cost and non-energy-intensive processing conditions is reported.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Biotecnologia / Eliminação de Resíduos / Yarrowia / Elementos da Série dos Lantanídeos / Indústria de Petróleo e Gás Idioma: En Revista: J Environ Sci Health A Tox Hazard Subst Environ Eng Assunto da revista: TOXICOLOGIA Ano de publicação: 2019 Tipo de documento: Article País de afiliação: Brasil País de publicação: Reino Unido
Texto completo
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Biotecnologia / Eliminação de Resíduos / Yarrowia / Elementos da Série dos Lantanídeos / Indústria de Petróleo e Gás Idioma: En Revista: J Environ Sci Health A Tox Hazard Subst Environ Eng Assunto da revista: TOXICOLOGIA Ano de publicação: 2019 Tipo de documento: Article País de afiliação: Brasil País de publicação: Reino Unido