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Ozônio flotação na colheita de microalgas cultivadas em efluente sanitário
(Universidade Federal de Santa Maria, 2018-09-04)
The lack of treatment of sanitary effluents causes several problems, both public health and environmental problems. And it can be reduced by using this sanitary effluent as a source of nutrients for microalgae growth. In ...
Preparação de catalisadores à base de ferrita de cobalto para aplicação na remoção de contaminantes em efluentes líquidos por processos oxidativos avançados
(Universidade Federal de Santa Maria, 2018-11-09)
This work aims to prepare cobalt ferrite (CoFe2O4) based-catalysts for use in the heterogeneous reactions of ozonation, photo-Fenton and photocatalysis aiming the decomposition of recalcitrant organic pollutants from aqueous ...
Metodologia para análise do balanço energético usando estimador de estados e medição em tempo real
(Universidade Federal de Santa Maria, 2018-07-26)
With the advent of smart grid, it is expected a new design for operation and planning of the electrical systems, changing the way how we manage and relate to the distribution systems. The term Smart Grid is used as an ...
Avaliação do comportamento da retrorrefletividade em rodovia com micro revestimento asfáltico à frio
(Universidade Federal de Santa Maria, 2018-07-30)
More than one million people are killed annually around the world as a result of traffic accidents. In Brazil, this epidemic costs the public coffers 56 billion a year. More than half of the fatal accidents in Rio Grande ...
Controle inteligente do despacho de geração distribuída para atendimento dos limites de demanda de uma microrrede
(Universidade Federal de Santa Maria, 2018-03-28)
The use of distributed generation (DG) allied to smart grids offers a series of benefits for the electrical system and, consequently, the society that makes use of it. Specifically in the economic and planning context, ...
Análise de sensibilidade na metodologia nodal para o cálculo da tarifa de uso do sistema de transmissão
(Universidade Federal de Santa Maria, 2018-07-19)
The reform of the 90s resulted in a vast impact on the Brazilian electrical system, mainly due to privatizations that occurred in that decade. The opening in the energy market has de-verticalized the four sectors of the ...
Aplicação de ácidos orgânicos na recuperação de metais a partir de resíduos de baterias de íons de lítio e catalisadores automotivos
(Universidade Federal de Santa Maria, 2019-01-17)
In the last decades, hydrometallurgical processes have received considerable attention for the recovery of precious metals such as Platinum Group Metals (PGM), as well as recovery of metals with high added value from ...
Aumento de rendimento e potência em painéis fotovoltaicos por reconfiguração das interconexões e arrefecimento geotérmico
(Universidade Federal de Santa Maria, 2018-08-27)
This doctoral thesis deals with the reconfiguration of photovoltaic interconnections linked to PV panel cooling by surface geothermal energy through water circulation to increase efficiency, power and lifetime of the ...
Desafios e oportunidades dos projetos de energia renovável registrados no primeiro período do protocolo de Quioto
(Universidade Federal de Santa Maria, 2015-07-03)
10 years ago it entered into force global climate agreement Kyoto Protocol, as an attempt to
curb emissions of greenhouse gases (GHG) with the help of three flexibility mechanisms,
including the Clean Development Mechanism ...
Modulação phase disposition com algoritmo de sorting para conversores multiníveis simétricos em cascata
(Universidade Federal de Santa Maria, 2018-08-03)
This master thesis presents a modulation technique with sorting of the command
signals of semiconductor devices, applied to symmetric cascaded multilevel converters.
This technique, referenced here as Phase Disposition ...