ELITA FONTENELE URANO DE CARVALHO

Resumo

Graduation at QuĆ­mica Industrial from Universidade Federal do CearĆ” (1978), master's at Nuclear Engineering from Universidade de SĆ£o Paulo (1992) and doctorate at Nuclear Engineering from Universidade de SĆ£o Paulo (2004). Has experience in Nuclear Engineering, focusing on Conversion, Enrichment and Manufacture of Nuclear Fuel, acting on the following subjects: combustivel nuclear, fluoreto, tratamento de efluentes, veneno queimavel and meio ambiente. (Text obtained from the CurrĆ­culo Lattes on October 8th 2021)


Possui graduaĆ§Ć£o em QuĆ­mica Industrial pela Universidade Federal do CearĆ” (1978), mestrado em Tecnologia Nuclear pela Universidade de SĆ£o Paulo (1992) e doutorado em Tecnologia Nuclear pela Universidade de SĆ£o Paulo (2004). Pesquisador do Instituto de Pesquisas EnergĆ©ticas e Nucleares da ComissĆ£o Nacional de Energia Nuclear. ExperiĆŖncia na Ć”rea de Engenharia de Materiais e QuĆ­mica com ĆŖnfase em ConversĆ£o, Enriquecimento, FabricaĆ§Ć£o de CombustĆ­vel Nuclear, Tratamento de efluentes radioativos e convencionais e reaproveitamento de resĆ­duos industriais e tĆ©cnicas de caracterizaĆ§Ć£o quĆ­mica de materiais. Membro do Instituto Nacional de Tecnologia- INCT para Reatores Nucleares Inovadores. Autor de capĆ­tulo de livro intitulado "Radioisotopes: Applications in Physical Sciences, 2011 ISBN: 9789533075105. TĆ­tulo do capĆ­tulo: Research Reactor Fuel Fabrication to Produce Radioisotopes. Professor de pĆ³s- graduaĆ§Ć£o da Universidade SĆ£o Paulo nas Ć”reas de caracterizaĆ§Ć£o de materiais e de combustĆ­vel nuclear. Professor visitante na Escola PolitĆ©cnica da Universidade de SĆ£o Paulo - modulo I e II de processamento de combustivel nuclear. Bolsista de Produtividade Desen. Tec. e ExtensĆ£o Inovadora 2 (Texto extraĆ­do do CurrĆ­culo Lattes em 08 out. 2021)

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  • Artigo IPEN-doc 26447
    Green synthesis of zirconia nanoparticles based on Euclea natalensis plant extract
    2019 - SILVA, ANDERSON F.V. da; FAGUNDES, ANA P.; MACUVELE, DOMINGOS L.P.; CARVALHO, ELITA F.U. de; DURAZZO, MICHELANGELO; PADOIN, NATAN; SOARES, CINTIA; RIELLA, HUMBERTO G.
    The development of nanomaterials has attracted increasing attention recently. The study of new technologies to obtain these materials becomes extremely important since the majority of the nanomaterials synthesized require reagents and solvents. These reagents and solvents are sometimes toxic and may generate harmful residues to the environment and the health of living beings. Therefore, green synthesis is a potential alternative to obtain nanoparticles, sustainably, using ecological sources. This study developed a method of synthesizing the green of zirconia (ZrO2) nanoparticles using Euclea natalensis (Natal gwarri or Natal ebony tree with African origin) plant extract. Moreover, the adsorptive properties against tetracycline were evaluated. A factorial design was applied in the synthesis process, and an optimization of the reaction parameters (plant extract concentration, precursor concentration, and calcination temperature) was also described for the first time in literature. The nanoparticles were characterized using the XRD, FTIR and TEM techniques, and then subjected to batch adsorption tests. The samples presented the zirconia monoclinic and tetragonal phases, according to the XRD analysis, yielding materials with minimum crystallite sizes equal to 5.25 nm. The FTIR spectra confirmed the results obtained by the XRD, presenting band characteristic of the zirconia monoclinic and tetragonal phases. The particles had a rounded morphology with a very low average diameter ranging from 5.90 to 8.54 nm. Moreover, the nanoparticles were applied to the adsorption of tetracycline. The samples were synthesized with vegetal extract and precursor concentration equal to 50 g Lāˆ’1 and 0.03 mol Lāˆ’1, respectively, and calcination temperature of 550 Ā°C, presented in the best performance (loading of 30.45 mg gāˆ’1). The adsorption capacity of the zirconia synthesized in this study was significantly higher than other common materials applied to tetracycline removal. The green synthesis procedure, as well as the application of the zirconia nanoparticles to the adsorption of an emerging pollutant, were promising.