SABINE NEUSATZ GUILHEN

SABINE NEUSATZ GUILHEN

(Fonte: Lattes)

Resumo

Possui graduação em Química com atribuições Tecnológicas e Biotecnológicas pelo Instituto de Química da Universidade de São Paulo (2005), mestrado (2009) e doutorado (2018) em Tecnologia Nuclear (Materiais) pelo Instituto de Pesquisas Energéticas e Nucleares (IPEN), Universidade de São Paulo. Tem experiência em Química Analítica com ênfase em Análise de Traços, atuando principalmente no desenvolvimento de métodos analíticos empregando técnicas espectrofotométricas (AAS, ICP OES e ICP-MS) para caracterização de amostras ambientais, arqueológicas, biológicas, forenses e nucleares. Atualmente, ocupa o cargo de Tecnologista em "Caracterização Química" no Centro de Química e Meio Ambiente (CQMA) do IPEN (CNEN/SP), onde desempenha atividades de pesquisa e desenvolvimento tecnológico em atendimento às demandas institucionais ligadas ao Ciclo do Combustível Nuclear e aos Programas de Pesquisa de caráter multidisciplinar, em apoio a projetos de Inovação Tecnológica e ao Programa de Pós-Graduação do IPEN/USP. Além disso, atua na geração de produtos tecnológicos e no desenvolvimento de materiais adsorventes de baixo custo e alto valor agregado visando o aproveitamento de materiais e resíduos naturais e/ou renováveis no tratamento de efluentes e rejeitos. (Texto extraído do Currículo Lattes em 4 maio 2023)

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Analysis of the tragedy of Vila Socó in Cubatão (São Paulo, Brazil) using the Haddon Matrix
2024 - SANTOS, RUBENS M.; ORTIZ, NILCE; GUILHEN, SABINE N.
The tragedy of Vila Socó epitomizes the socio-environmental repercussions of rapid industrialization in Cubatão. Beginning in the 1940s with the construction of the Anchieta highway, the city experienced an influx of migrants drawn by burgeoning industries, leading to unplanned urban growth and the emergence of vulnerable communities like Vila Socó. This article examines the interconnected factors—such as demographic shifts, inadequate planning, and regulatory oversight—that culminated in the devastating fire of 1984, claiming numerous lives and highlighting systemic failures. Utilizing the Haddon Matrix, this study dissects the Vila Socó incident, emphasizing the roles of human error, infrastructure integrity, and socio-economic disparities in disaster causation. By contextualizing the tragedy within Cubatão’s industrial trajectory, it underscores the urgent need for comprehensive risk assessment and proactive mitigation strategies in rapidly developing regions globally. Beyond its immediate focus, this work offers broader insights into the dynamics of industrial disasters and their socio-economic implications. As pipelines continue to play a vital role in global energy infrastructure, the lessons drawn from Vila Socó’s tragedy resonate deeply, emphasizing the imperative of robust safety protocols and accountable governance to prevent similar catastrophes in the future.
Biosorption of methylene blue by bone meal
2024 - ARAUJO, LEANDRO G. de; MARTINS, GABRIEL F.; CAMPERA, ALEXSSANDRA A.A.; MARUMO, JULIO T.; GUILHEN, SABINE N.
Sorption technologies have been proposed for the treatment of water containing methylene blue (MB), a toxic and persistent pollutant. Despite its environmental risks, the role of process variables in MB removal has not been fully explored through experimental design. The objective of this study is to assess the potential of bone meal powder (BMP), an underexplored agricultural byproduct, as an affordable adsorbent for the removal of MB from water. BMP was subjected to a series of analytical characterization techniques, and its adsorption capacity was evaluated through a comprehensive factorial design, which investigated the effects of biosorbent dosage, solution pH, and initial MB concentration. The study revealed that the highest adsorption level was 14.49 mg g−1, attained under the following conditions: 1 g L−1 BMP, pH 11, and 100 mg L−1 MB. The adsorption equilibrium was reached within 60 min, with a measured capacity (qexp) of 18 mg g−1. Theoretical adsorption isotherms indicated a capacity of 63 mg g−1, which aligned well with the Langmuir model. To predict adsorption outcomes, machine learning models were applied, with multiple linear regression performing best. Optimization of decision trees and neural networks improved accuracy but risked overfitting. FT-IR, XRD, and ICP analyses indicated ion exchange as a significant mechanism of adsorption. In desorption studies, H2SO4 was the most effective agent, achieving 68.72% desorption efficiency. BMP exhibited optimal recyclability for up to four cycles before efficiency declined.
Babassu coconut endocarp-derived activated biochar for efficient cesium adsorption from aqueous solution
2024 - GARCIA, GABRIELA F.N.; ARAUJO, LEANDRO G. de; MARUMO, JULIO T.; GUILHEN, SABINE N.
Application of WDXRF and EDXRF spectrometry for major and minor elemental analysis in oil sludge by Fundamental Parameter Algorithm
2024 - PINTO, A.L.M.; SCAPIN, M.A.; COTRIM, M.E.B.; MARUMO, J.T.; GUILHEN, S.N.
Soft Systems Methodology (SSM) as an approach to the safety management of nuclear facilities
2024 - GUILHEN, S.N.; CAMARGO, I.M.C.; MARUMO, J.T.; SILVA, T.M. da; RUBIN, G.A.; NETO, A.S.V.
Assessment of pesticide contamination in Cidade Dos Meninos, Rio de Janeiro, Brazil, using Regional Screening Levels (RSL)
2023 - GOMES, DEIWID F.; ORTIZ, NILCE; GUILHEN, SABINE N.
In the mid-20th century, the Malaria Institute in Brazil researched hexachlorocyclohexane (HCH), dichlorodiphenyltrichloroethane (DDT), and other organochlorines in Cidade dos Meninos, Rio de Janeiro, Brazil. After Malaria Institute closure, there was a 200-ton stock of chemicals compounds abandoned without any surveillance, which led to massive contamination of the nearby community by carcinogenic organochlorines. This article presents a new review of the Cidade dos Meninos’ case, analyzing the HCH and DDT contamination using a Haddon Matrix and Regional Screening Levels (RSL).
Biossorção de radionuclídeos em solução aquosa
2023 - ALEXANDRE, KAILAINE A.S.; GUILHEN, SABINE N.
X-ray fluorescence spectrometry
2023 - SCAPIN, M.A.; TESSARI-ZAMPIERIA, M.C.; GUILHENA, S.N.; COTRIM, M.E.B.
This study aims to develop reliable analytical methodology that is, cost-effective, and requires minimal sample quantity to quantify uranium content in nuclear waste and others. The Energy Dispersive X-ray Fluorescence Spectrometry (EDXRF) technique was used, and a rigorous comparison was made between the fundamental parameters (FP) method and the empirical (EMP) method. Statistical evaluation of results demonstrated that the FP method showed a satisfactory level of confidence for precision and limit of quantification.
Effective phosphate removal from water by electrochemically mediated precipitation with coffee grounds biocarbon obtained by non-thermal plasma method
2023 - SILVESTRIN, G.A.; GONCALVES, M.H.; GODOI, C.M.; MAIA, V.A.; FERREIRA, J.C.; GUILHEN, S.N.; NETO, A.O.; SOUZA, R.F.B. de
This study investigates the use of biocarbon electrodes, produced from coffee grounds through plasma pyrolysis, in the electrochemically mediated precipitation process for phosphorus removal in a flow reactor. The structural and electrochemical properties of biocarbon were analyzed using X-ray powder diffraction (XRD), Raman spectroscopy, and cyclic voltammetry. The results show that biocarbon consists of both graphene oxide and lignocellulose with surface OH groups that facilitate the breakdown of water, a key step in the electrochemically mediated precipitation process for phosphorus removal. The addition of graphite to the biocarbon paste was found to be necessary to obtain a response from the biocarbon in cyclic voltammetry. The Gr75BC25 electrode achieved higher phosphorus removal rates than other tested electrodes, particularly at low flows, due to the functional groups present in biocarbon enhancing the breakdown of water. However, electrodes with a greater amount of biocarbon exhibit lower rates of phosphorus removal and higher consumption of electrical power, which can be attributed to their higher electrical resistivity. Thus, to optimize its use, it is important to balance the benefits of increased phosphorus removal rates with the trade-off of increased energy consumption and decreased phosphorus removal at higher levels of biocarbon. The results suggest that biocarbon produced from coffee grounds by plasma pyrolysis has the potential to be used as an effective electrode material for electrochemically mediated precipitation processes.
Methylene blue biosorption by bone meal using experimental design
2022 - ARAUJO, LEANDRO G. de; CAMPERA, ALEXSSANDRA A.A.; MARUMO, JULIO T.; GUILHEN, SABINE N.
This study aims at expanding the knowledge on the applicability of bone meal powder (BMP), and assess its potential as an adsorbent material for methylene blue (MB) removal, a toxic textile dye. BMP is a low-cost material still little studied for the adsorption of contaminants in aqueous media. In this work, we employed the 2k experimental design (k = 3) to systematically explore the most important process parameters, which were pH of the MB solution, initial MB concentration in solution and biosorbent dosage (mass of biosorbent/volume of contaminated solutions).