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Itens para a visualização no momento 11-20 of 21
Utilização de caulim como um potencial adsorvente de baixo custo na remoção de poluente orgânico em soluções aquosas
(Universidade Federal de Santa Maria, 2017-03-24)
Dye industries have great difficulty in effectively treating of wastewater generated, particularly in relation to dyes removal of the effluents, that even in small quantities, gives intense color, contributing to contamination ...
Digestão anaeróbia de glicerol visando a produção de biohidrogênio
(Universidade Federal de Santa Maria, 2017-08-29)
Alternative energy sources have been gaining ground in the current scenario, and thus the bioprocesses for sustainable energy production have been more intensively investigated. The use of industrial waste as alternative ...
Filtração de ceras aplicando diferentes tratamentos físicos na superfície de meios filtrantes
(Universidade Federal de Santa Maria, 2017-07-20)
The presence of inorganic substances in the composition of crude wax decreases its commercial value, requiring purification of the product. A new physical treatment on the surface of the filter media was carried out by ...
Fracionamento da fração sólida obtida na pirólise de resíduos plásticos utilizando destilação molecular de filme descendente
(Universidade Federal de Santa Maria, 2017-08-29)
The large generation of plastic waste entails the need for recycling methods for the reduction and recovery of these materials. Molecular distillation technology is a viable process to separation high value-added products. ...
Hidrólise ácida de biomassa assistida por ultrassom para obtenção de furfural
(Universidade Federal de Santa Maria, 2017-07-12)
In this work, the applicability of ultrasound (US) for synthesis of furfural from biomass was investigated. Several US systems (baths, probes and a cup horn system) with different frequencies and power were evaluated (from ...
Solução numérica de modelos de transferência de massa difusivos em sistemas de adsorção
(Universidade Federal de Santa Maria, 2017-07-17)
The present work develops in detail the numerical solution of diffusion mass transfer models
in the adsorption process of cationic dyes. The diffusive models are developed based on the
mass transfer phenomena in a porous ...
Determinação de hidrocarbonetos policíclicos aromáticos (HPAs) em mexilhão empregando o método QuEChERS e HPLC-FD
(Universidade Federal de Santa Maria, 2017-07-20)
The consumption of fish and seafood is considered an important element of a balanced diet. The mussel is a bivalve mollusk which is fed by filtration of organic particles present in suspension in water. In recent years, ...
Estudo cinético da produção de ésteres metílicos com dimetil carbonato catalisada por fosfato de nióbio
(Universidade Federal de Santa Maria, 2017-07-31)
The aim of this study was to evaluate commercial niobium phosphate as heterogeneous catalyst in biodiesel production from oleic acid and low-cost raw materials using dimethyl carbonate as acyl receptor. Catalyst was ...
Otimização da produção e extração de metabólitos com atividade antioxidantes a partir do fungo Botryosphaeria dothidea isolado do bioma Pampa
(Universidade Federal de Santa Maria, 2017-08-17)
In this work the ultrasound was used to increase the production of metabolites with antioxidant activity obtained from the submerged fermentation of the fungus Botryosphaeria dothidea, followed by different extraction ...
Avaliação do fosfato de nióbio como catalisador heterogêneo na esterificação de ácido oleico com acetato de metila
(Universidade Federal de Santa Maria, 2017-09-29)
The concern about global warming and the search for energy security are main responsible for promote the development of renewable fuels. Among biofuels, biodiesel is a potential successor to fossil fuels because it is an ...