CELINA LOPES DUARTE

CELINA LOPES DUARTE

(Fonte: Lattes)

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Graduated in Pharmacy and biochemistry by Sao Paulo University, USP, (1986), Master of Science in Radiological Protection and Dosimetry, USP (1992). PhD in Environmental Application of Nuclear Technology (1999). Researcher of the Energetic and Nuclear Research Institute (IPEN) from 1986 to 2014 and adviser at Sao Paulo University from 2001 to 2014. Expert in applications of Advanced Oxidation Process (POA) with ionizing radiation using electron beam and gamma in the decomposition of organic pollutants, with the main objective of environmental recovery and industrial effluent treatment, in addition the pretreatment of sugarcane bagasse to ethanol biofuel production. Coordinated some projects in these areas with financial support of FAPESP and AIEA. Advisor of 6 students in Master Degree and 2 Doctor Degree. Published 36 papers and won the prize TOP ETHANOL in Industrial Technology Inovation in 2013 and ABRAFATI - PETROBRAS SCIENCE IN DYES IN 2012. (Text obtained from the Currículo Lattes on May 2nd 2023)

Possui graduação em Farmácia e Bioquímica pela Universidade de São Paulo (1986), mestrado em Proteção Radiológica e Dosimetria (1992) e doutorado em Aplicações Ambientais e Industriais da Tecnologia Nuclear pela USP-IPEN (1999). Pesquisador do IPEN de 1986 a 2014 e orientador de pós-graduação da Universidade de São Paulo de 2001 a 2014. Sua especialização inclui aplicação de Processo de Oxidação Avançada (POA) por radiação ionizante de feixe de elétrons e gama, para decomposição de poluentes orgânicos, com o objetivo de despoluição ambiental, tratamento de efluentes industriais e também como pré-tratamento do bagaço de cana, para produção de etanol de segunda geração. Coordenou vários projetos nessas áreas com financiamentos da FAPESP e Agencia Internacional de Energia Atômica. Orientou 6 alunos de mestrado e 2 de doutorado. Publicou 36 trabalhos em periódicos internacionais e ganhou o Prêmio TOP ETANOL em Inovação Tecnológica Industrial em 2013 e o Prêmio ABRAFATI -PETROBRAS DE CIÊNCIA EM TINTAS em 2012. (Texto extraído do Currículo Lattes em 02 maio 2023)

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Electron beam processing to improve biodegradable polymers and for industrial wastewater treatment and recycling
2022 - CALVO, W.A.P.; MUNHOZ, P.M.; SOMESSARI, S.L.; DUARTE, C.L.; SPRENGER, F.E.; FEHER, A.; LAINETTI, F.F.; GASPAR, R.R.; NASCIMENTO, F.C.; SILVA, L.G.A.; HARADA, J.; BRAGA, A.; RODRIGUES, M.; SAMPA, M.H.O.
Radiation technology has been used to control environmental pollution. The aim of these studies was to apply the electron beam radiation technology for controlling plastic pollution and environmental protection.
Development and construction of a mobile electron beam accelerator to treat and recycle industrial effluents in Brazil
2022 - CALVO, WILSON A.P.; SOMESSARI, SAMIR L.; DUARTE, CELINA L.; SPRENGER, FRANCISCO E.; FEHER, ANSELMO; LAINETTI, FABIANA de F.; GASPER, RENATO R.; BRAGA, ALCIDES; RODRIGUES, MARCOS; SAMPA, MARIA H.O.
In the world, there is a growing increase in the demand for water for human consumption, as well as the prioritization of the use of available water resources for public supply. The treatment of wastewater and industrial effluents by electron beam irradiation is a promising technique, however, not very widespread in Brazilian territory. The design and construction of a mobile unit by the Nuclear and Energy Research Institute (IPEN/CNEN), containing an electron beam accelerator of 0.7 MeV, 20 kW and 640 mm window is innovative to demonstrate the effects and positive results of this technology. The mobile unit will have as one of its main advantages the possibility of treating effluents in the place where the source is located, eliminating costs and bureaucratic problems associated with the transportation of waste, besides publicizing the technology in several places in the country. To implement the project, IPEN/CNEN has been consolidating partnerships with national and international companies. The resources for the development of the unit have been supplied by the Brazilian Innovation Agency (FINEP) and International Atomic Energy Agency, financing the “IAEA TC Project BRA1035 - Mobile electron beam accelerator to treat and recycle industrial effluents”. The Institute has associated with a specialized company (Truckvan Industry) in an innovation project for the unit design and development. Several meetings have been realized with the company and the International Atomic Energy Agency experts, aiming the compatibility of the design and the exchange of information necessary for the project development. The idealized project divides the cart in the following modules: a) control room and laboratory for technical and scientific dissemination of the technology; b) industrial electron beam accelerator, hydraulic units, ventilation system, cooler and bunker with irradiation device; and c) transformer and power source supply. A 3D model study of the control room and laboratory space was done to facilitate understanding the internal distribution of the laboratory analysis equipment (Gas Chromatography Mass Spectrometry, Total Organic Carbon and UV-Visible Spectroscopy). The irradiation system with electron accelerators allows treating different types of effluents. Depending on the effluent, the amount of ionizing radiation energy required for treatment may vary, as well as the amount of treated effluent per day. For the construction of the mobile unit, the estimated cost is about US$ 1.5 Million. The type of treated effluent, the treatment cost per m3/day and other information regarding the cost of maintenance and operation of the mobile unit are obtained from the Business Plan of the Mobile Unit.
Electron beam application for studies carried out with real domestic sewage from São Paulo wastewater treatment plants
2001 - BORRELY, S.I.; SAMPA, M.H.O.; DUARTE, C.L.
The incompatibility between industrial development and clean environment requires intensive search for waste mitigation technology. Since the aquatic resources have been the most impacted from the environments, improvements on wastewater treatment technologies have been considered. The Nuclear Research Institute has dedicated attention to this problem since 1990. According to the Governmental Sewage Company, SABESP, Sao Paulo Metropolitan Region, RMSP, is treating 18 cubic meters of sewage per second at five stations. The throughput of each station is: ETE Barueri - 9.5 m3/s; ETE ABC - 3.0 m3/s; ETE Sao Miguel - 1.5 m3/s; ETE Parque Novo Mundo - 2.5 m3/s and ETE Suzano - 1.5 m3/s. Real effluents from the municipalities have been submitted to electron beam accelerator for different purposes, and using batch system. The samplings were composite and the wastewater were irradiated at Pyrex vessels, 246 mL per sample. The radiation doses were defined by current variation and the energy was fixed in 1.4MeV. The conveyor velocity was 6,72 m/min. A Dynamitron EBA, 37,5kW was the electron source.
Overview of flue gas treatment in Brazil
2011 - CALVO, WILSON A.P.; POLI, D.C.R.; DUARTE, C.L.; OMI, N.M.; LIMA, W.
The coal mines in Brazil are primarily located in southern part areas. The total coal reserves are approximately 32.8 billions tons, 89% of which are located in Rio Grande do Sul state. The Brazilian agriculture potentiality is very high, mainly due to the availability of flat land and the existence of industrial capacity to supply the main fertilizers needs. Electron beam flue gas treatment process ensures simultaneous removal of SO2 and NOX from flue gases by single process, requiring no additional wastewater treatment system and can produce useful nitrogen fertilizer consisting of ammonium sulfate (NH4)2SO4 and ammonium nitrate NH4NO3 as by-products. During the TC Project BRA/8/021 - Pilot Plant for Electron Beam Purification of Flue Gas supported by IAEA (1995-1996), a laboratory facility for electron beam flue gas treatment was set at IPEN. In 1997, an official request from Brazilian Government, Ministry of Science & Technology (MCT) and IPEN was made for the Japan Consulting Institute (JCI) to prepare feasibility studies of air pollution control by electron beam flue gas treatment in three power generation companies. These companies are responsible for the power generation, the transmission and the supply of electricity to Brazil: Jorge Lacerda – Eletrosul Centrais Eletricas do Sul do Brasil S.A., Presidente Medici – Companhia Estadual de Energia Eletrica (CEEE) and Piratininga – AES Eletropaulo Thermal Power Plants.
Developing an electrical power system of a mobile electron beam accelerator to treat wastewater and industrial effluents
2021 - GASPER, RENATO R.; SOMESSARI, SAMIR L.; SPRENGER, FRANCISCO E.; FEHER, ANSELMO; DUARTE, CELINA L.; SAMPA, MARIA H. de O.; LAINETTI, FABIANA de F.; BRAGA, ALCIDES; RODRIGUES, MARCOS de M.; CALVO, WILSON A.P.
The treatment of wastewater and industrial effluents by electron beam irradiation is a promising technique, however, not very widespread in Brazilian territory. The design and construction of a mobile unit by the Nuclear and Energy Research Institute, containing an electron beam accelerator of 700 keV and 20 kW is innovative to demonstrate the effects and positive results of this technology. The aim is to transfer the mobile unit to several companies with interest in liquid waste treatment, connect to the industry electrical system and start the ionization treatment process through electron beam. The mobile unit connection to the local electrical system may be a challenge due to the great diversity of voltages and distances involved, as well as the large injections of harmonic content generated by the electron beam accelerator that can affect sensitive loads in the industrial system. In this work, an analysis of the electrical power system of the mobile unit was made, regarding the interruption capacity, selectivity protection and adequate short circuit levels, in order to assure a greater reliability in the operation. At the end, the control panel of the mobile unit, simulations and measurements were carried out at the 1.5 MeV and 37.5 kW electron beam accelerator, installed in the Radiation Technology Center, demonstrating the necessity of applying a filter to reduce the measured harmonic distortion. The analysis of the mobile unit electrical power system was made, in order to assure a greater reliability in the operation.
Extraction of molybdenum from spent NiMo hydrocracking catalysts assisted by ionizing radiation
2022 - KONDO, F.M.; DUARTE, C.L.; SOMESSARI, S.L.; SATO, M.I.; SALVADOR, V.L.R.; LIMA, N.B.; MARTINELLI, J.R.; CALVO, W.A.P.
A catalyst is a substance that changes the rate of a reaction. In the petroleum industry, the catalysts are commonly used for fluid catalytic cracking and hydrocracking carried out with catalyst, each of them applied in a specific stage. These catalysts are used to facilitate the molecular chains cracking, which will generate a mixture of hydrocarbons. However, the catalyst gradually loses its activity, either by changing its original molecular structure or by its contamination from other petroleum molecules. The application of ionizing radiation (medium-energy electron beam) over these spent catalysts was studied to contribute the extraction of metals or rare-earths of high added-value. Tests conducted with hydrocracking catalysts were used the technique of electron beam irradiation (1.3 MeV) and had as a subject the extraction of molybdenum. Energy Dispersive X-ray analysis was performed on a Shimadzu EDX-720/800HS and X-ray Diffraction analysis on a Rigaku MultiFlex. Electron beam irradiation had a positive contribution if compared to traditional thermal and chemical methods. In temperature around 750 °C, hydrocracking irradiated catalysts of the lower region have an extraction of molybdenum (MoO3) yield twice higher compared to non-irradiated ones, in other words 57.65% and 26.24%, respectively.
Extraction of molybdenum from spent cracking catalysts
2019 - KONDO, F.M.; DUARTE, C.L.; SOMESSARI, S.L.; SATO, M.I.; SALVADOR, V.L.R.; LIMA, N.B.; MARTINELLI, J.R.; CALVO, W.A.P.
A catalyst is a substance that changes the rate of a reaction. In the petroleum industry, the catalysts are commonly used for Fluid Catalytic Cracking (FCC) and Hydro Catalytic Cracking (HCC), each of them applied in a specific stage. These catalysts are used to facilitate the molecular chains cracking, which will generate a mixture of hydrocarbons. However, the catalyst gradually loses its activity, either by changing its original molecular structure or by its contamination from other petroleum molecules. The application of ionizing radiation (medium-energy electron beam) over these spent catalysts was studied to contribute the extraction of metals or rare-earths of high added-value. Tests conducted with HCC catalysts were used the technique of electron beam irradiation (1.3 MeV) and had as a subject the extraction of Molybdenum. Energy Dispersive X-ray (EDX) analysis was performed on a Shimadzu EDX-720/800HS and X-ray Diffraction (XRD) analysis on a Rigaku MultiFlex. Electron beam irradiation had a positive contribution if compared to traditional thermal and chemical methods. In temperature around 750°C, HCC irradiated catalysts of the lower region have an extraction of Molybdenum (MoO3) yield twice higher compared to non-irradiated ones, in other words 57.65% and 26.24%, respectively.
Developing an electrical power system of a mobile electron beam accelerator to treat wastewater and industrial effluents
2019 - GASPAR, R.R.; SOMESSARI, S.L.; SPRENGER, F.E.; FEHER, A.; DUARTE, C.L.; SAMPA, M.H.O.; LAINETTI, F.F.; FUGA, D.F.; RODRIGUES, M.; CALVO, W.A.P.
The treatment of wastewater and industrial effluents by electron beam irradiation is a promising technique, however, not very widespread in Brazilian territory. The design and construction of a mobile unit by the Nuclear and Energy Research Institute, containing an electron beam accelerator of 700 keV and 20 kW is innovative to demonstrate the effects and positive results of this technology. The aim is to transfer the mobile unit to several companies with interest in liquid waste treatment, connect to the industry electrical system and start the ionization treatment process through electron beam. The mobile unit connection to the local electrical system may be a challenge due to the great diversity of voltages and distances involved, as well as the large injections of harmonic content generated by the electron beam accelerator that can affect sensitive loads in the industrial system. In this work, an analysis of the electrical power system of the mobile unit was made, regarding the interruption capacity, selectivity protection and adequate short circuit levels, in order to assure a greater reliability in the operation. At the end, the control panel of the mobile unit, simulations and measurements were carried out at the 1.5 MeV and 37.5 kW electron beam accelerator, installed in the Radiation Technology Center, demonstrating the necessity of applying a filter to reduce the measured harmonic distortion. The analysis of the mobile unit electrical power system was made, in order to assure a greater reliability in the operation.
Architectural design of a mobile irradiation unit for the treatment of industrial effluents in Brazil
2019 - LAINETTI, F.F.; DUARTE, C.L.; SOMESSARI, S.L.; SPRENGER, F.E.; FEHER, A.; SAMPA, M.H.O.; GASPAR, R.R.; FUGA, D.; RODRIGUES, M.; CALVO, W.A.P.
The Nuclear and Energy Research Institute (IPEN-CNEN/SP) decided to develop and build a mobile beam irradiation unit for the treatment of industrial effluents. The mobile unit will have as one of its main advantages the possibility of treating effluents in the place where the source is located, eliminating costs and bureaucratic problems associated with the transportation of waste, besides publicizing the technology in several places in Brazil. To implement the project, IPEN-CNEN/SP has been consolidating partnerships with national and international companies. The resources for the development of the unit have been supplied by the Brazilian Innovation Agency (FINEP) and International Atomic Energy Agency, financing the IAEA TC Project BRA1035 – Mobile electron beam accelerator to treat and recycle industrial effluents. The Institute hired a specialized company (Truckvan Industry) for the unit design and development. Several meetings have been realized with the company and the IAEA experts aiming the compatibility of the design and the exchange of information necessary for the project development. Regarding the mobile lab, several layout options have been developed to better meet the needs of each device and its users. The layout has been discussed with the objective of facilitating the maintenance of the equipment; the well-being and ergonomics of operators; optimization of spacing and also to make compatible the need for the presence of equipment and space for operators. Thus, several studies have been prepared to allow the discussion between the areas involved and to optimize the project, as well as the visualization of the spaces available. In this paper is presented the approach adopted for the architectural design of a mobile irradiation unit in Brazil.
Development of a mobile unit with an electron beam accelerator (20 kw and 700 keV)
2019 - SOMESSARI, SAMIR L.; FEHER, ANSELMO; SPRENGER, FRANCISCO E.; DUARTE, CELINA L.; SAMPA, MARIA H. de O.; OMI, NELSON M.; GASPER, RENATO R.; LAINETTI, FABIANA; FUGA, DANILO F.; RODRIGUES, MARCOS; CALVO, WILSON A.P.
The purpose of the present study is therefore to install an electron beam accelerator (20 kW and 700 keV) in a mobile unit to treat effluent from petroleum production, for petroleum desulfurization and, in addition, for degradation of toxic organic compounds in wastewater for reusein, in partnerships with private and public institutions. Several technical aspects were considered in this installation, such as following the national transport legislation and the safety requirements (BSS, IAEA and CNEN Safety Standards). Technical characteristics of the electron beam accelerator (EBA) are energy of 700 keV and 28.5 mA of beam current, with 60 cm scan length. The installation of the EBA includes the developing and manufacturing a radiological shield. In several points of the mobile unit, GM type radiation sensors will be installed for radiological monitoring during irradiation processing, interlocked with the accelerator’s safe operating system. For the design of a vacuum system with mechanical pumps, ion pump and sensors, the following procedures will be carried out: a) design of an optimized system of the mobile unit power supply; b) development of a cooling system with deionized water and pressurized air for the cooling of the EBA systems in the scan horn, high voltage generator, control panel, vacuum system, among other peripherals; c) installation of the fan to cool the thin titanium window; d) installation of an ozone filter in the exhaust system to remove gas generated during irradiation; e) project of a mechanical structural reinforcement of the trailer was studied, improved and executed. In the mobile unit, a space was created for an analysis laboratory to monitor the wastewater before and after irradiation, establishing parameters in the quality control of the irradiated material.