Papers by Antonio Carlos Ferreira Batista
Journal of the Brazilian Chemical Society, 2020
Biodiesel purification by water washing has been proved to be an unattractive process from an eco... more Biodiesel purification by water washing has been proved to be an unattractive process from an economic and environmental point of view. In this work, we propose the use of regenerated cellulose membranes from peanut shell as an alternative in the biodiesel purification. The preparation of the membranes was optimized from a central composite design, resulting in dense and non-porous membranes. However, in contact with biodiesel, the membranes undergo expansion due to the retention of methanol, water, and glycerol molecules, allowing the permeation of fatty acid methyl esters. The filtered biodiesel presents quality parameters, such as total ester content of 98.3 ± 1.4% and free glycerol content < 0.02%, in agreement with the main regulatory agencies. The regenerated cellulose membranes from peanut shell are easily prepared, with high repeatability (relative standard deviation (RSD) < 1.8%) and are presented as an economical and environmental solution for the biodiesel purification.
Polímeros, 2021
In the present study, catalytic activity of dense, porous, electrospun membranes of polysulfone (... more In the present study, catalytic activity of dense, porous, electrospun membranes of polysulfone (PSF) and polysulfone with sulfonated polystyrene (PSF_PSS) have been evaluated in reactions of esterification of oleic acid with methanol, in times that varied from 10 to 480 minutes. Conversion to biodiesel has been confirmed by FTIR and quantified through gas chromatography. The results showed the catalysts used were effective in the esterification reaction studied and the PSF_PSS electrospun membrane has presented the best conversion to methyl oleate, reaching 70.5% in a 10-minute reaction and 95.8% in a 240-minute reaction, when methanol:oleic acid molar ratio of 10:1, 5% of catalyst and temperature of 100 °C were used. Considering the performance of solid catalysts described in literature, mainly related to reaction times and conversion of the process, this study reveals a promising feasibility of using electrospun membranes of PSF_PSS for developing a heterogeneous acid catalyst aimed to biodiesel synthesis.
Advances in Petroleum Exploration and Development, 2013
A simple and complete method for the production and characterization of methylic and ethylic biod... more A simple and complete method for the production and characterization of methylic and ethylic biodiesel from the main types of waste frying oils produced in Brazil was developed. The waste frying oils of soybean, canola, corn and sunflower were employed in the production of methylic and ethylic biodiesel by transesterification reaction via basic homogeneous catalysis. The transesterification reactions were performed at 40oC during 40 min, using a catalyst percentage (KOH) equal to 2%. After separation of the phases biodiesel/glycerol, biodiesel was washed with 0.1M HCl aqueous solution, heated at 100 oC to remove excess alcohol and finally filtered under vacuum with silica, a drying agent. The reaction yields were in the range 67.8-95.9%, quite satisfactory. The oxidative stability index was obtained for the oils as well as the biodiesel. Quality control of the original oil and of the methylic and ethylic biodiesels was accomplished by the TLC and GC-MS techniques. The results presen...
Renewable Energy, 2021
Abstract Biodiesel is a fuel comprised of mono-alkyl esters of long-chain fatty acids derived fro... more Abstract Biodiesel is a fuel comprised of mono-alkyl esters of long-chain fatty acids derived from vegetable oils or animal fats. Biodiesel is designated B100 and is regarded as the major substitute for fossil diesel. Crambe abyssinica, a native plant from Ethiopia, has great potential for biodiesel production due to its higher calorific value and oxidative stability as compared to soybean oil biodiesel. Compared to fossil diesel, C. abyssinica oil biodiesel emits significantly less CO2 without efficiency loss. However, its crude oil only provides good results if it undergoes supercritical transesterification. Here, we aimed to produce ethyl and methyl esters from crambe oil under ambient conditions. Initially, we tested two methods to degum crambe oil: aqueous degumming and acid degumming. We subjected the degummed oil to transesterification through the methylic or the ethylic route, catalyzed by KOH. The methyl esters of the biodiesel obtained by esterification of crambe oil submitted to acid degumming had higher oxidative stability as compared to the methyl esters of the biodiesel obtained from crambe oil subjected to aqueous degumming: 15.7 h and 10.7 h, respectively, but the yield was lower: 70% vs. 80%, respectively. The ethyl esters of the biodiesel obtained from crambe oil submitted to aqueous degumming provided the highest yield and oxidative stability: 65% and 8.5 h, respectively. We also evaluated the oxidative stability of blends consisting of crambe oil methylic or ethylic biodiesel and soybean oil biodiesel.
Journal of Cleaner Production, 2020
This is a PDF file of an article that has undergone enhancements after acceptance, such as the ad... more This is a PDF file of an article that has undergone enhancements after acceptance, such as the addition of a cover page and metadata, and formatting for readability, but it is not yet the definitive version of record. This version will undergo additional copyediting, typesetting and review before it is published in its final form, but we are providing this version to give early visibility of the article. Please note that, during the production process, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.
Aos meus familiares, todo o meu amor e gratidão que mesmo longe sei que torceram por mim. Os meus... more Aos meus familiares, todo o meu amor e gratidão que mesmo longe sei que torceram por mim. Os meus pais, José dos Reis Guerra e Sônia Duarte Guerra por cuidarem de mim com tanto amor e prontidão. Aos meus irmãos Jéssica Duarte Guerra, Wallas Duarte Guerra e Emanuelle da Silva Duarte pelo apoio ao longo da minha jornada. Aos meus sobrinhos Davi Alves e Laura Alves que me alegraram quando estava triste ou cansado. Ao Recírio Guerino que me ajudou, aconselhou, estimulou e contribuiu principalmente com a historicidade dos fatos. A Flávia Costa e Jaqueline Chiesa pela amizade, companheirismo, pelos conselhos, pela parceria, pelas pesquisas durante o curso e na vida. Ao meu orientador Prof. Dr. Antônio Carlos Ferreira Batista (Flash), pelos conselhos, prontidão, paciência, orientação, estímulo e sobretudo pela confiança e oportunidades. Aos professores Dr. Rosana Maria Nascimento e Dr. Anízio Márcio pelas dicas e aulas sobre estatística ao longo da pesquisa. Ao professor Dr. Wesley da Silva Borges pela disponibilidade, atenção, cobrança, pela ajuda e pela contribuição na produção de conhecimento e orientação. Aos colegas do curso e do CT INFRA que sempre estiveram dispostos em ajudar a todos os momentos em especial a Bárbara pelas viagens, confiança, dicas e conselhos. A Isabela de Souza Dias por todo o suporte durante esses anos e disponibilidade em ajudar nos experimentos. A querida e sempre atenciosa Andressa Tironi que sempre esteve pronta a ajudar, pelo apoio e disponibilidade. A equipe de professores em especial ao Prof. Guimes pelo apoio e dicas construtivas e as reflexões durante as aulas e aos servidores da UFU-Uberlândia e UFU-Ituiutaba.
(a) do(a) candidato(a). Iniciando os trabalhos o(a) presidente da mesa, Dr(a). Antônio Carlos Fer... more (a) do(a) candidato(a). Iniciando os trabalhos o(a) presidente da mesa, Dr(a). Antônio Carlos Ferreira Batista, apresentou a Comissão Examinadora e o candidato(a), agradeceu a presença do público, e concedeu ao Discente a palavra para a exposição do seu trabalho. A duração da apresentação do Discente e o tempo de arguição e resposta foram conforme as normas do Programa. A seguir o senhor(a) presidente concedeu a palavra, pela ordem sucessivamente, aos(às) examinadores(as), que passaram a arguir o(a) candidato(a). Ultimada a arguição, que se desenvolveu dentro dos termos regimentais, a Banca, em sessão secreta, atribuiu o resultado final, considerando o(a) candidato(a): Aprovado(a). Esta defesa faz parte dos requisitos necessários à obtenção do título de Mestre. O competente diploma será expedido após cumprimento dos demais requisitos,
Journal of Electrochemical Science and Engineering, 2018
In this work a new model of carbon paste electrode was employed to determine sulfamethoxazole (SM... more In this work a new model of carbon paste electrode was employed to determine sulfamethoxazole (SMX), an antibiotic used to treat infections in human and veterinary medicine, by the square wave voltammetric modality (SWV). More specifically, the electrochemical behavior of SMX was investigated by cyclic voltammetry (CV), and the quantitative analysis of SMX was provided by SWV. The analytical curve was obtained with a linear correlation coefficient (r) of 0.985 and standard deviation (SD) of 0.005 μA. Limits of detection and quantification were found as 2.3×10-6 and 7.7×10-6 mol L-1 , respectively. According to the obtained results, the new carbon paste prototype electrode can successfully be employed in this kind of electroanalytical applications.
Revista Brasileira de Engenharia de Biossistemas, 2016
The application of lipases in various fields has been notably increased in the last few decades a... more The application of lipases in various fields has been notably increased in the last few decades and qualitative/quantitative improvements need to be done. However, many methodologies of screening are described in order to find a good lipase producer and statistical optimization is a necessary tool to improve lipase production. In this work, an isolation of filamentous fungi lipase producers and a transesterification capacity screening was evaluated. Four fungi were chosen to the transesterification reaction assays and the best fungus selected was submitted to a submerged fermentation. Parameters of the culture medium were optimized using response surface methodology. Selected liquid medium was SR at 30 °C, 72 h, 100 rpm. Corn oil was the best carbon source and together with Tween 80 increased two-fold the lipase activity. After the experimental design, the new medium optimized were 3.5-fold higher than the original liquid medium and was composed by 0.5% corn oil, 0.012% MgSO4.7H2O, ...
Revista Brasileira de Engenharia de Biossistemas, 2011
RESUMO O Brasil apresenta uma farta variedade de oleaginosas as quais apresentam potencial para s... more RESUMO O Brasil apresenta uma farta variedade de oleaginosas as quais apresentam potencial para se produzir biodiesel, no entanto, muitas vezes a falta de estudos voltados a essas plantas nao proporciona fundamentação científica visando confirmar por meio de experimentos e dados todo esse potencial. Este trabalho é baseado na caracterizaçao físico-química e também da estabilidade oxidativa do óleo e do biodiesel metílico de pinhão-Manso produzido a partir do óleo bruto..
ABSTRACT Este trabalho tem como meta estabelecer uma discussão sobre a relação da química verde “... more ABSTRACT Este trabalho tem como meta estabelecer uma discussão sobre a relação da química verde “Green Chemistry” e a produção de biodiesel, particularmente a produção do biodiesel no Brasil. Para tanto levamos em consideração vários aspectos que tangem a química verde “Green Chemistry” e a produção de biodiesel, de modo a estabelecer um paralelo entre o processo produtivo e características do biodiesel com os 12 princípios da química verde “Green Cehmistry” , demonstrando assim a aplicabilidade do biodiesel como uma combustível correto e não agressivo ao meio ambiente. O biodiesel não é nocivo para a saúde humana, para a vegetação, animais vivos e não danifica monumentos ou edifícios. Sendo por esse motivo, entre muitos outros, seu emprego vantajoso frente ao diesel sobre tudo para o transporte publico nas grandes cidades. É seguro e de fácil transporte, por ser biodegradável e possuir um ponto de fulgor superior a 150º C. Aplicando essas propriedades do biodiesel a química verde, veremos que pela sua definição que é a utilização de técnicas químicas e metodologias que reduzem ou eliminam o uso de solventes e reagentes ou geração de produtos e sub-produtos tóxicos, que são nocivos à saúde humana ou ao ambiente, perceberemos que o biodiesel se encaixa no modelo de desenvolvimento produtivo proposto. Neste artigo, utilizaremos a tradução literal, química verde, para o termo em inglês &quot;Green Chemistry&quot;.
Environmental concerns dominate the world scene in the XXI century. The petroleum and its derivat... more Environmental concerns dominate the world scene in the XXI century. The petroleum and its derivatives are a major contributor to the non-renewable sources of energy. However, there are forecasts that in a time near the main sources of petroleum may exhaust. Thus, the search for alternative sources of energy, beside environmental necessity is essential to ensure the well being of all. The mineral diesel, the main petroleum derivative, is an extremely fuel used. Its use in diesel engines leads to high rates of emission of greenhouse gases. A potential substitute for diesel fuel is biodiesel. Biodiesel consists of alkyl esters of long chain carboxylic acids, from renewable sources such as vegetable oils or animal fats. The introduction of biodiesel in the energy matrix has been stimulated by environmental factors, where studies have shown that the burning of biodiesel leads to significant reduction of greenhouse gases, and also economic and social factors.
Journal of Biofuels, 2011
Since petroleum and its derivatives constitute non-renewable fuel sources, the search for biofuel... more Since petroleum and its derivatives constitute non-renewable fuel sources, the search for biofuels that will enable sustainable development is extremely relevant, since this might lead to solutions that will avoid a greater dependence on oil-derived products. Besides ethanol, a promising renewable fuel that has also been considered in Brazil is biodiesel, due to the large availability of arable lands in this country. The Brazilian potential for the production of oilseeds and vegetable oil extraction is very high. Indeed, according to USDA – the U.S. Department of Agriculture, Brazil has the potential to expand agricultural production by 170 million hectares. The Brazilian flora contains several potential plant species that could be suitable for large-scale biodiesel production. One such potential plant is Jatropha Curcas.
Fuel, 2014
ABSTRACT This research reports on the synthesis of methylic and ethylic biodiesels from pequi oil... more ABSTRACT This research reports on the synthesis of methylic and ethylic biodiesels from pequi oil using the transesterification reaction process via alkaline homogeneous catalysis. Thermogravimetric studies helped to evaluate the thermal stability of the biodiesels. A methanol/ethanol 20:80 (w/w) alcoholic solution furnished the ethylic biodiesel and allowed for straightforward optimization of the biodiesel–glycerin phase separation. Classic physicochemical analyses, gas chromatography–mass spectrometry (GC–MS), infrared spectroscopy (FT-IR), and proton nuclear magnetic resonance (1H NMR) aided characterization of the synthesized biodiesel samples. Thermogravimetric analysis (TGA) provided information about the thermal decomposition kinetics of pequi biodiesels. The biodiesels obtained here had satisfactory thermal stability and qualified as potential substituents of conventional mineral diesel.
Tetrahedron Letters, 1996
ABSTRACT Regiospecific hydroselenation of terminal acetylenes using aluminum phenylselenolates af... more ABSTRACT Regiospecific hydroselenation of terminal acetylenes using aluminum phenylselenolates afforded the 1-organyl-1-phenylseleno ethenes in good yields. The first example of exclusive formation of the hydroselenation Markovnikov adducts is described.
Química Nova, 2003
Recebido em 13/3/02; aceito em 21/6/02 GREEN CHEMISTRY-THE 12 PRINCIPLES OF GREEN CHEMISTRY AND I... more Recebido em 13/3/02; aceito em 21/6/02 GREEN CHEMISTRY-THE 12 PRINCIPLES OF GREEN CHEMISTRY AND IT INSERTION IN THE TEACH AND RESEARCH ACTIVITIES. Green chemistry-defined as the design, development, and application of chemical processes and products to reduce or eliminate the use and generation of substances hazardous to human health and the environment. This article summarizes the 12 principles of green chemistry, describing how they have been applied to the academic, industrial and research activities around the world.
Journal of Biomedicine and Biotechnology, 2011
A simple, fast, and complete route for the production of methylic and ethylic biodiesel from tucu... more A simple, fast, and complete route for the production of methylic and ethylic biodiesel from tucum oil is described. Aliquots of the oil obtained directly from pressed tucum (pulp and almonds) were treated with potassium methoxide or ethoxide at 40°C for 40 min. The biodiesel form was removed from the reactor and washed with 0.1 M HCl aqueous solution. A simple distillation at 100°C was carried out in order to remove water and alcohol species from the biodiesel. The oxidative stability index was obtained for the tucum oil as well as the methylic and ethylic biodiesel at 6.13, 2.90, and 2.80 h, for storage times higher than 8 days. Quality control of the original oil and of the methylic and ethylic biodiesels, such as the amount of glycerin produced during the transesterification process, was accomplished by the TLC, GC-MS, and FT-IR techniques. The results obtained in this study indicate a potential biofuel production by simple treatment of tucum, an important Amazonian fruit.
Energy, 2014
An experiment to establish the best reaction conditions for the transesterification of soybean oi... more An experiment to establish the best reaction conditions for the transesterification of soybean oil is described. We conducted the ethylic and methylic routes using two different protocols, and evaluated how the variables time, stirring, alcohol/oil molar ratio, catalyst (%), catalyst type, and temperature affected the process. The highest yield of biodiesel was obtained using the following conditions: ethylic route e t ¼ 60 min, stirring: 100 rpm, ethanol/oil molar ratio ¼ 12:1, catalyst relative to oil (%) ¼ 0.2%, catalyst ¼ potassium ethoxide, temperature ¼ 35 C; methylic route e t ¼ 30 min, stirring: 100 rpm, methanol/oil molar ratio ¼ 6:1, catalyst (%) ¼ 0.2%, catalyst ¼ KOH, temperature ¼ 55 C. We analyzed the acidity, moisture content, density at 20 C, kinematic viscosity at 40 C, oxidative stability, and carbon residue at the biodiesels obtained under optimal conditions. The results were consistent with the values allowed by the Brazilian ANP (Resolution 07/2008). We also conducted the physicochemical analysis of the soybean oil used as feedstock to produce biodiesel.
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Papers by Antonio Carlos Ferreira Batista