Application of functionalized magnetic nanoparticles for the selective separation of lanthanum from solution resulting from spent catalyst leaching

• Grant number: 21/15156-2
• Support Opportunities: Scholarships in Brazil - Post-Doctoral
• Effective date (Start): March 01, 2022
• Effective date (End): February 28, 2025
• Field of knowledge: Engineering - Chemical Engineering
• Principal Investigator: Jorge Alberto Soares Tenório
• Grantee: Giovani Pavoski
• Host Institution: Escola Politécnica (EP). Universidade de São Paulo (USP). São Paulo , SP, Brazil
• Associated research grant: 19/11866-5 - Development of innovative processes for the recovery of critical metals, AP.TEM
• Associated scholarship(s): 23/01064-4 - Nanohydrometalurgy applying magnetic nanoparticles in the recovery of critical metals, BE.EP.PD

Abstract

Rare earths, such as lanthanum, are considered strategic elements of modern technology due to their essential role in processes such as petrochemical catalysis. The trend towards depletion of these elements ores makes new alternatives to be explored, such as the extraction of rare earths from residues such as spent industrial catalysts. The so-called nanohydrometallurgy allows the capture and processing of metallic elements from functionalized magnetic nanoparticles that are used for the selective separation of metals directly from aqueous solutions, without using organic solvents. Thus, this project aims to apply functionalized magnetic nanoparticles in the selective separation of critical metals, such as lanthanum, contained in spent industrial catalysts. The working solution comes from the leaching of metals from the catalysts. Batch tests will be carried out to verify optimal parameters for separation, such as pH, time, nanoparticle mass. Different analytical techniques will be used to analyze the metallic solution and characterize the nanoparticles before and after the tests. Pilot system tests may be carried out to verify the technical feasibility for future industrial applications. (AU)

Publicações científicas

(Referências obtidas automaticamente do Web of Science e do SciELO, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores)

PAVOSKI, GIOVANI; GARJULLI, FRANCO; DOS SANTOS, CAIO RENATO; MORAES, MARCELO LACERDA; SOARES TENORIO, JORGE ALBERTO; ROMANO ESPINOSA, DENISE CROCCE. Synthesis of a magnetic composite of silica with micro and nano-cobalt metallic structures from a spent catalyst (Co3O4). MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS, v. 285, p. 15-pg., 2022-08-11. (21/15156-2, 19/11866-5)