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.
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).
Pyrolytic temperature evaluation of macauba biochar for uranium adsorption from aqueous solutions
2019 - GUILHEN, S.N.; MASEK, O.; ORTIZ, N.; IZIDORO, J.C.; FUNGARO, D.A.
This study aims to evaluate the effect of the pyrolytic temperature on the biochar derived from the macauba endocarp for the removal of uranium (VI) from aqueous solutions. The endocarp was subjected to six different pyrolytic temperatures, ranging from 250 °C to 750 °C. The biochars obtained at each temperature were evaluated for their adsorption capacities (“q”). The highest adsorption capacities were obtained for the biochar produced at 250 °C (BC250), followed by the one obtained at 350 °C (BC350), with removal efficiencies of 86% and 80%, respectively. The best condition was achieved when the endocarp was subjected to temperatures between 300 and 350 °C, at which it was possible to obtain a satisfactory balance among adsorption capacity, gravimetric yield and fixed carbon content. This characteristic, combined with the high removal efficiency, points to an ideal working temperature of 350 °C. Elemental analysis showed a decrease of the H/C and O/C ratios when higher pyrolytic temperatures were applied, indicating an inverse relationship between the carbonization and the surface polar functional groups, which were likely responsible for an increased adsorptive capacity in biochars produced at lower temperatures. Both FTIR and XPS analysis indicated that oxygen-containing groups such as hydroxyls and carboxylic acids were involved with the binding of uranyl ions.
Activation of biochar obtained from slow pyrolysis of the macauba coconut residue for removing uranium from aqueous solutions
2018 - GUILHEN, S.N.; ORTIZ, N.; IZIDORO, J.C.; FUNGARO, D.A.
Macauba (Acrocomiaaculeata) is a palm tree native to the savannah-like area of Central Brazil. As a result of the oil extraction from its coconuts, a dark stiff residue, the “endocarp”, rich in lignin content, has a potential for being exploited as feedstock for biochar production. This study investigates the activation of biochar obtained from slow pyrolysis of the macauba coconut residue in order to remove uranium from aqueous solutions. The non-activated biochar, referred to as “BC350”, is produced at a pyrolytic temperature of 350°C under Ar atmosphere and a 1- hour residence time. The activated biochar was produced the same way and was further subjected to activation via physical route using CO2 at 850°C for 120 min. The product of this treatment was named “BC350-A”. Both biochars were characterized by specific surface area. The surface area increased from 0.832 (untreated biochar) to 643.12 m2 g-1, confirming the improvement of the porosity. The removal efficiency for uranyl ions (U(VI)) increased from 80.5 (untreated biochar) to 99.2% for 5 mg L-1 initial concentration solution adjusted to pH 3 using a 10 g L-1dosage. Adsorption isotherms were employed to represent the results of the U adsorption onto the BC350-A. An estimation of the best fit was performed by calculating different deviation equations, also called error functions. The Redlich-Peterson isotherm model was the most appropriate for fitting the experimental data. This hybrid model incorporates both Langmuir and Freundlich’s isotherm functionalities. These results demonstrate that a valueadded material can be produced, encouraging the exploration of thermochemical conversion of lignocellulosic biomasses.
Pyrolytic temperature evaluation of macauba biochar for uranium adsorption from aqueous solutions
2017 - GUILHEN, SABINE N.; ORTIZ, NILCE; FUNGARO, DENISE A.
Macauba (Acrocomia aculeata) is a palm tree native to the tropical regions of America. In Brazil, it is prevalent in the savannah, known as “cerrado”. A valuable natural and renewable source of vegetable oil for food and cosmetic industries (nut oil) and for biodiesel (mesocarp oil), macauba has the potential to become the new “green gold” of Brazil, not only for its oil quality, but because it could solely be destined for commercial purposes, since it doesn’t compete with food market industry such as soybean and sugar cane. The dark stiff part that protects the nut, called “endocarp”, is generated as a residue in a considerable amount after the processing of the nut oil.
Water treatment adsorption and UV photodecomposition processes for antibiotics: Cephalexin and Amoxicillin
2016 - REIS, A.S.; GUILHEN, S.N.; ORTIZ, N.
The developed of water treatment process to adsorb and decompose the pharmaceutical antibiotic amoxicillin and cephalexin using iron oxide –hematite, quitosan and UV radiation. The equilibrium time te= 180 min and the removal percentage for amoxicillin was 90% similar with those found in literature. In same experimental parameters the Cephalexin removal percentage was 25% some parameter have been alter to promote the photodecomposition such antibiotic mixture. The results confirm an indicate the possible use of UV photodecomposition reaction as a promising water treatment to treat, adsorb and decompose antibiotic residues in the environment.
Evaluation of adsorption of uranium from aqueous solution using biochar materials
2015 - CORREA, WAGNER C.; GUILHEN, SABINE N.; ORTIZ, NILCE; FUNGARO, DENISE A.