Filipe Miguel Jesus Figueiredo

@tecnico.ulisboa.pt

Instituto Superior Técnico (CampusTecnológico e Nuclear)
Instituto Superior Técnico, Universidade de Lisboa

Filipe Miguel Jesus Figueiredo


                     Download Compact PDF  
https://researchid.co/f1m5j0f2
Researcher fellow since 2017.
Current interests: REE chemistry, waste valorisation, green hydrometallurgy, modelling of biphasic processes, scaling-up of chemical operations, chemical engineering project and the development of methods for XRF analysis.
Teaching assistant in the Physical Chemistry course (Graduation in Chemical Engineering, IST, 2022-2023), with focus in active learning and other STEM pedagogical techniques
Co-author to one peer-review Q1 scientific article and a poster at an international conference.
He participated in one course, seven short trainings on analytical techniques and methodologies, many workshops and a meeting designed to divulge science to the public.

EDUCATION

PhD student in Chemical Engineering (IST, UL, Portugal). Master of Chemical Engineering (IST, UL, Portugal). Currently researches the recovery of rare earth elements from e-waste with focus on circular economy and green hydrometallurgy principles, and enginnering project of chemical plants.

RESEARCH, TEACHING, or OTHER INTERESTS

Chemical Engineering, Chemistry, Waste Management and Disposal, Analytical Chemistry
5

Scopus Publications

33

Scholar Citations

3

Scholar h-index

1

Scholar i10-index

Scopus Publications

  • Recovery of rare earth elements from CRT phosphors. Part I: Processing fractions characterization, leaching kinetics and modelling
    Filipe M.J. Figueiredo, Fernando O. Durão, José P. Sardinha
    Separation and Purification Technology, 2026
  • A comprehensive review on Y and Eu recovery from cathode-ray tube phosphors
    Filipe M.J. Figueiredo, João P. Leal, João Bordado, Fernando Durão, Joaquim Marçalo, et al.
    Resources Conservation and Recycling, 2025
  • Fast, accessible and reliable method for elemental analysis of metals in solution by ED-XRF spectroscopy
    Filipe M. J. Figueiredo, José M. Carretas, João P. Leal, José M. Sardinha
    Journal of Analytical Science and Technology, 2024
    The measurement of metals in solution is usually performed using inductive coupled plasma hyphenated techniques or atomic absorption. Although very sensitive and accurate, these analytical techniques are quite expensive and do not allow field measurements. The present work takes advantage of energy-dispersive X-ray fluorescence (ED-XRF) ease-of-use features to determine the concentration of rare earth elements (Y, Pr, Nd, Eu) and others (S, Fe, Ni, Cu, Zn) in aqueous solutions, after appropriate sample treatment. The approach turned out to be a reliable and very convenient procedure for field analysis. The simplicity, speed and reliability of the methodology used combined with the possibility of simultaneous analysis and low cost of the method can be advantageous in industrial context. The approach relies on the suspension of the target solutions in a cellulose matrix that is further converted into a pellet for direct analysis. Calibration curves obtained by regression analysis at 5% significance are shown for a variety of elements (S, Fe, Ni, Cu, Zn, Y, Pr, Nd, Eu) with correlation coefficients between 0.9555 and 0.9980. Higher coefficients of variance were obtained for the calibration of S and Pr due to low sensitivity and the overlapping with the L lines of Nd, respectively. The performed calibrations were not affected by the presence of other analytes in the matrix. Results obtained showed that it is possible to use the proposed methodology to accurately quantify d and f block metals in aqueous solutions by ED-XRF after sequestering the chemical content into a cellulose powder matrix and further processing into a pellet. Graphical Abstract
  • Determination of rare earth elements in CRT phosphors and NdFeB magnets residues using an ED-XRF portable spectrometer to assist field semi-quantitative screening
    Filipe M.J. Figueiredo, M. Fátima Araújo, Joaquim Marçalo, João P. Leal, José P. Sardinha
    Microchemical Journal, 2024
  • Application of ED-XRF spectra for determination of macroelements in edible seaweeds
    Jelena Milinovic, Filipe M.J. Figueiredo, João Paulo Noronha, José Sardinha
    Journal of Food Composition and Analysis, 2022

RECENT SCHOLAR PUBLICATIONS

  • A comprehensive review on Y and Eu recovery from cathode-ray tube phosphors
    FMJ Figueiredo, JP Leal, J Bordado, F Durão, J Marçalo, JP Sardinha
    Resources, Conservation and Recycling 223, 108481 , 2025
    2025
    Citations: 3
  • Fast, accessible and reliable method for elemental analysis of metals in solution by ED-XRF spectroscopy
    FMJ Figueiredo, JM Carretas, JP Leal, JM Sardinha
    Journal of Analytical Science and Technology 15 (1), 29 , 2024
    2024
    Citations: 9
  • Determination of rare earth elements in CRT phosphors and NdFeB magnets residues using an ED-XRF portable spectrometer to assist field semi-quantitative screening
    FMJ Figueiredo, MF Araújo, J Marçalo, JP Leal, JP Sardinha
    Microchemical Journal, 110136 , 2024
    2024
    Citations: 9
  • Application of ED-XRF spectra for determination of macroelements in edible seaweeds
    J Milinovic, FMJ Figueiredo, JP Noronha, J Sardinha
    Journal of Food Composition and Analysis 110, 104559 , 2022
    2022
    Citations: 12

MOST CITED SCHOLAR PUBLICATIONS

  • Application of ED-XRF spectra for determination of macroelements in edible seaweeds
    J Milinovic, FMJ Figueiredo, JP Noronha, J Sardinha
    Journal of Food Composition and Analysis 110, 104559 , 2022
    2022
    Citations: 12
  • Fast, accessible and reliable method for elemental analysis of metals in solution by ED-XRF spectroscopy
    FMJ Figueiredo, JM Carretas, JP Leal, JM Sardinha
    Journal of Analytical Science and Technology 15 (1), 29 , 2024
    2024
    Citations: 9
  • Determination of rare earth elements in CRT phosphors and NdFeB magnets residues using an ED-XRF portable spectrometer to assist field semi-quantitative screening
    FMJ Figueiredo, MF Araújo, J Marçalo, JP Leal, JP Sardinha
    Microchemical Journal, 110136 , 2024
    2024
    Citations: 9
  • A comprehensive review on Y and Eu recovery from cathode-ray tube phosphors
    FMJ Figueiredo, JP Leal, J Bordado, F Durão, J Marçalo, JP Sardinha
    Resources, Conservation and Recycling 223, 108481 , 2025
    2025
    Citations: 3