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Avaliação da aplicação de CO2 supercrítico na presença de cosolventes para a reciclagem de placas de circuito impresso de celulares
(Universidade Federal de Santa Maria, 2015-03-06)
Technological development and intensive marketing support the growth of demand for electrical and electronic equipment (EEE), which have as a primary component printed circuit boards (PCBs). These devices have become ...
Comparação de técnicas para concentração de índio de telas de LCD e aplicação de eletro-obtenção
(Universidade Federal de Santa Maria, 2015-12-18)
Because of the constant introduction of new technologies to market growth of electronic waste generation has gained importance on the world stage, among these residues are cell phones. Deliver useful life increasingly ...
Utilização de CO2 supercrítico e ácidos orgânicos na lixiviação de índio presente em telas de lcd de telefones celulares
(Universidade Federal de Santa Maria, 2015-07-15)
The growth in the generation of electrical and electronic equipment waste (WEEE) has won global importance and cell phones are highlighted between these wastes because of short life cycle and its amounts of hazardous ...
Produção de olefinas leves a partir de etanol em ZSM-5 sintetizada sem direcionador nitrogenado
(Universidade Federal de Santa Maria, 2015-03-05)
The petrochemical industry is currently strongly based on the production of light olefins ethylene and propylene, which are mainly produced by hydrocarbons from oil. Due to the environmental appeal and unstable oil market ...
Seleção de fungos filamentosos para produção de ácidos graxos poli-insaturados
(Universidade Federal de Santa Maria, 2015-08-07)
In this work, 150 fungal strains isolated in the Pampa biome were evaluated for. The microbial oil was produced by submerged fermentation in shaken flasks at 120 rpm, 28 °C for 7 days. The lipids were extracted from cells ...
Síntese de ferrita de zinco (ZnFe2O4) por diferentes rotas e seu uso na reação heterogênea de foto-fenton.
(Universidade Federal de Santa Maria, 2015-02-20)
In this work, zinc ferrite oxide was performed (ZnFe2O4) was synthesized by the solvothermal conventional method and the microwave-assisted solvothermal route. The influence of different synthesis as well as their variables ...
Modelagem de processos enzimáticos e fermentativos usando otimização por enxame de partículas
(Universidade Federal de Santa Maria, 2015-02-20)
The process modeling and simulation is a greatly important procedure for many chemical and biotechnological processes. The process simulation allows to predict elementary behavior of the state variables of the process, ...
Avaliação de diferentes processos de extração na obtenção de óleo de farelo de arroz
(Universidade Federal de Santa Maria, 2015-02-19)
Rice bran oil (RBO) is a natural rich source of antioxidants and contains a balanced fatty acids composition, which is of great interest for application in food, cosmetic and pharmaceutical industries. Therefore, the ...
Cinética da reação de desidratação de etanol em alumina
(Universidade Federal de Santa Maria, 2015-02-25)
Ethene or ethylene is a hydrocarbon mainly used in plastic manufacture, through the polymerization. The production of ethene in large scale is performed through cracking process of oil light fractions. In the incessant ...
Preparação do compósito ferrita de níquel/nanotubos de carbono por micro-ondas para uso na reação de foto-fenton
(Universidade Federal de Santa Maria, 2015-08-21)
In this study, the synthesis of the nickel ferrite composite/carbon nanotubes was accomplished through two different routes: conventional solvothermal method and solvothermal method assisted by microwave. The influence of ...