12 documents found, page 1 of 2
Oxidação de fármacos por cloro e formação de subprodutos em amostras aquosas em...
Souza, Brígida Prieto de; Lima, Diego Roberto Sousa; Aquino, Sergio Francisco de; Quaresma, Amanda de Vasconcelos; Baeta, Bruno Eduardo LoboFármacos e desreguladores endócrinos são encontrados em águas naturais brasileiras, incluindo alguns mananciais de abastecimento, também em função da baixa cobertura de coleta e tratamento de esgotos no Brasil. Nesse cenário, o presente trabalho intentou avaliar a remoção de três fármacos - sulfametoxazol (SMX), diclofenaco (DCF) e 17β-estradiol (E2) - em água destilada por meio da oxidação com cloro (hipoclori...
Application of residual yeast as a source of redox mediators for the anaerobic ...
Victral, Davi Madureira; Aquino, Sergio Francisco de; Silva, Silvana de Queiroz; Baeta, Bruno Eduardo LoboThis work investigated the anaerobic degradation of the model azo dye Remazol Yellow Gold RNL in batch reactors using discharged residual yeast as the source of redox mediators (RM). Two yeast lysis methods (mechanical lysis and sonication) were tested and optimized to produce a riboflavin-rich yeast lysate. The reactors were operated at 25 oC for 48 hours, evaluating the effect of external carbon source (gluco...
Influence of the applied organic load (OLR) on textile wastewater treatment usi...
Baeta, Bruno Eduardo Lobo; Lima, Diego Roberto de Sousa; Silva, Silvana de Queiroz; Aquino, Sergio Francisco deThis paper evaluated the treatment of textile wastewater in submerged anaerobic membrane bioreactors (SAMBR) operated on a bench scale. Particularly, the influence of operational conditions, such as the applied organic rate (OLR) and the dilution factor (for toxicity attenuation) of the textile wastewater, was evaluated on color and organic matter removal. In addition, the effect of powdered activated carbon (P...
Use of aqueous two-phase PEG-salt systems for the removal of anionic surfactant...
Murari, Gabriella Frade; Penido, Jussara Alves; Silva, Heriveltom Morais da; Baeta, Bruno Eduardo Lobo; Aquino, Sergio Francisco deLinear alkylbenzene sulfonates (LAS) are synthetic anionic surfactants that are extensively used in many industries. As a result, large volumes of effluents containing high levels of these compounds are discharged into water bodies, causing risks to aquatic flora and fauna. Then, there is a need for environmentally safe and economically viable technologies for the removal of LAS from aqueous matrices. The prese...
Two-stage fractionation of sugarcane bagasse by autohydrolysis and glycerol org...
Meighan, Brittany Nicole; Lima, Diego Roberto de Sousa; Cardoso, Wilson Junior; Baeta, Bruno Eduardo Lobo; Herrera Adarme, Oscar FernandoBioethanol production from lignocellulose biomass offers a solution to current environmental challenges caused by fossil fuel energy resources, while satisfying the biorefinery concept. In this study, two-stage fractionation (autohydrolysis (AH) followed by glycerol organosolv delignification (GOD)) of sugarcane bagasse (SCB) was studied as a function of temperature, time, glycerol content and liquid-to-solid (...
Anaerobic digestion of hemicellulose hydrolysate produced after hydrothermal pr...
Ribeiro, Fernanda Resende; Passos, Fabiana; Gurgel, Leandro Vinícius Alves; Baeta, Bruno Eduardo Lobo; Aquino, Sergio Francisco deIn the context of a sugarcane biorefinery, sugarcane bagasse produced may be pretreated generating a solid and liquid fraction. The solid fractionmay be used for 2G bioethanol production,while the liquid fraction may be used to produce biogas through anaerobic digestion. The aimof this study consisted in evaluating the anaerobic digestion performance of hemicellulose hydrolysate produced after hydrothermal pret...
Aproveitamento energético a partir da digestão anaeróbia de hidrolisado hemicel...
Baeta, Bruno Eduardo LoboPrograma de Pós-Graduação em Engenharia Ambiental. Núcleo de Pesquisas e Pós-Graduação em Recursos Hídricos, Pró-Reitoria de Pesquisa e Pós Graduação, Universidade Federal de Ouro Preto.; Este trabalho teve como principal objetivo otimizar a partir de um planejamento experimental as variáveis operacionais temperatura (T), tempo (t) e razão sólido-líquido (RSL) para a auto-hidrólise (AH) do bagaço de cana-de-açú...
Microbial dynamics during azo dye degradation in a UASB reactor supplied with y...
Silva, Silvana de Queiroz; Silva, Débora Cristiane; Lanna, Maria Célia da Silva; Baeta, Bruno Eduardo Lobo; Aquino, Sergio Francisco deThe present work aimed to investigate the microbial dynamics during the anaerobic treatment of the azo dye blue HRFL in bench scale upflow anaerobic sludge bed (UASB) reactor operated at ambient temperature. Sludge samples were collected under distinct operational phases, when the reactor were stable (low variation of color removal), to assess the effect of glucose and yeast extract as source of carbon and redo...
Optimization of sugarcane bagasse autohydrolysis for methane production from he...
Baeta, Bruno Eduardo Lobo; Lima, Diego Roberto de Sousa; Herrera Adarme, Oscar Fernando; Gurgel, Leandro Vinícius Alves; Aquino, Sergio Francisco deThis study aimed to optimize through design of experiments, the process variables (temperature – T, time – t and solid-to-liquid ratio – SLR) for sugarcane bagasse (SB) autohydrolysis (AH) to obtain hemicellulose hydrolyzates (HH) prone to anaerobic digestion (AD) and biochemical methane production (BMP). The results indicated that severe AH conditions, which lead to maximum hemicelluloses dissolution and sugar...
Degradation of a model azo dye in submerged anaerobic membrane bioreactor (SAMB...
Baeta, Bruno Eduardo Lobo; Luna, H. J.; Sanson, Ananda Lima; Silva, Silvana de Queiroz; Aquino, Sergio Francisco deThis work investigated the anaerobic degradation of the model azo dye Remazol Yellow Gold RNL in an upflow anaerobic sludge blanket reactor (UASB) and two submerged anaerobic membrane (SAMBR) bioreactors, one of which (SAMBR-1) was operated with powdered activated carbon (PAC) in its interior. The reactors were operated at 35 _C with a hydraulic retention time of 24 h in three operational phases, aimed to asses...