Doutorado em Inovação Farmacêutica em Rede (FF)
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Navegando Doutorado em Inovação Farmacêutica em Rede (FF) por Assunto "Adsorption"
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Item Biossorção de micropoluentes em fibra de sabugo de milho e detecção analítica usando fluorescência de raio x, espectroscopia Raman e análise quimiométrica(Universidade Federal de Goiás, 2021-04-07) Golveia, Jhéssica Cavalcante de Souza; Schimidt, Fernando; http://lattes.cnpq.br/1884442831412446; Santiago, Mariângela Fontes; http://lattes.cnpq.br/7143224488081563; Col, José Augusto da; Zang, Warde Antonieta da Fonseca; Morais, Mariana Cristina de; Sanches, Renato; Schimidt, FernandoThe presence of micro-pollutants in the waters has led to growing concern due to the impact on human health. Among the most important molecules is Bisphenol-A (BPA), pesticides, hormones and dyes. On the other hand, micro-pollutant removal processes that make use of agro-industrial waste have aroused the interest of researchers. This is because the accumulation of lignocellulosic materials is also an environmental problem. The adsorption capacity was tested using the molecules BPA, diuron, cyproterone acetate, caffeine, erythrosine red and tartrazine yellow. The detection of these pollutants requires the use of sensitive and easy-to-handle techniques. In this context, the X-ray Fluorescence (FRX) and Raman spectroscopic methods are highlighted.The objective of this work is to use corncob agroindustrial residue (CC) as an adsorbent in the removal of micropollutants of aqueous matrix and detect them using FRX and Raman Spectroscopy. The values was treated using Chemoface Software and PLS (Partial Least Square) Model of calibration. The adsorption studies were carried out in reaction media containing the ground vegetable fiber and different concentrations of molecules, as well as at different pHs. Isotherms models and kinetic models were evaluated. The results showed that CC is a potent adsorbent in aqueous solution, leading to about 90% of removal for BPA. The adsorption kinetics followed the pseudo-second order model and isotherm that best suited the Lagmuir model, and the maximum adsorption capacity was 51.25 mg per gram of adsorbent fiber, after 20 minutes of contact. The chemometric analyze showed hat PLS model allows to determine a calibration model capable to reach high values of R2 and low values of error. The thermogravimetric analysis allowed to conclude that it is a material resistant to high temperatures, due to the presence of considerable amount of lignin. Finally, the best results of BPA removal efficiency by CC compared to activated carbon corroborate its high biosorption capacity.Item Produção de lacases por Pleurotus ostreatus e o uso da biorremediação e adsorção para tratamento de poluentes via biomassa residual(Universidade Federal de Goiás, 2022-02-24) Nunes, Elaine Sousa; Santiago, Mariângela Fontes; http://lattes.cnpq.br/7143224488081563; Santiago, Mariângela Fontes; Paula, José Realino de; Morais, Mariana Cristina de; Zang, Warde Antonieta da Fonseca; Faria, Fabrícia Paula deThe contaminants of effluents with domestic and industrial releases have been proven in several regions of the planet. In the face of outbreaks caused by flaviviruses the use of repellents has grown significantly, as well as synthetic dyes, because they are widely used in the textile industry and bisphenol A, because it is found in different commercial polymers, are commonly found in pollutants keeping present in waters generating possible harmful effects. Conventional effluent treatment processes have low chemical removal efficiency and are expensive. In view of this, the objective of this study was the development and evaluation of methodologies for the treatment of effluents contaminated with the active ingredient of repellents, icairidina, red textile dye Drimaren CL-5B and bisphenol A (BPA) by using açaí residue as adsorbent material and/or bioremediation with the lacase produced from the white decomposition fungus Pleurotus ostreatus using as enzymatic inducer the solid residues of acai, pineapple, mexerica and pequi. The enzymatic production with the residues of açaí and pineapple obtained an activity of 1139 UmL-1 and 1031 UmL-1 respectively. Remediation was efficient for BPA, being able to bioremediate up to 100 % of the compound, but it was ineffective for icariride. However, açaí revealed high adsorptive capacity, reaching to fully adsorb bisfinel A, more than 50 % of iridin and more than 70 % of the dye when in a synthetic sample and 40 % in an industrial sample, demonstrating a promising methodology.