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Síntese e caracterização de hidróxidos duplos lamelares para adsorção de o-nitrofenol de soluções aquosas
(Universidade Federal de Santa Maria, 2020-10-08)
In this work, layered double hydroxides (LDHs) based on calcium-aluminium (Ca-Al), nickel-aluminium (Ni-Al) and zinco-aluminium (Zn-Al) were evaluated at adsorptive removal of o-nitrophenol from aqueous solutions. The ...
Polímeros em resíduos de serviço de saúde: identificação e determinação dos parâmetros cinéticos de degradação térmica
(Universidade Federal de Santa Maria, 2020-09-29)
Não foi possível inserir o abstract.
Modelagem da difusão intrapartícula para predição da cinética da esterificação catalítica heterogênea de ácido acético e isopropanol empregando Nb2O5
(Universidade Federal de Santa Maria, 2020-09-29)
The esterification reaction is one of the most important processes of organic synthesis in liquid phase, since esters have many applications in the chemical industry. Isopropyl acetate, for example, is used as a solvent ...
Impregnação de TiO2 em biochar derivado de resíduo de café para fotodegradação de diclofenaco em soluções aquosas
(Universidade Federal de Santa Maria, 2020-10-07)
In this work, a novel composite based on coffee grounds biochar was prepared with immobilized titanium dioxide (TiO2) and used for photodegradation of diclofenac in aqueous solution. Composites with different mass proportions ...
Emprego do ultrassom para a desemulsificação de petróleos provenientes do pré-sal
(Universidade Federal de Santa Maria, 2020-09-21)
The presence of emulsified water in crude oil is a natural consequence of the formation and the production process, leading to crude oil emulsions in petroleum production. Emulsion separation is necessary for industrial ...
Aplicação de CO2 supercrítico na delaminação de um painel fotovoltaico visando a recuperação de materiais valiosos
(Universidade Federal de Santa Maria, 2020-08-31)
Photovoltaic panels are technologies that have been gradually increasing in the world market and, after their end of life, are considered as electronic waste. There are 250,000 metric tons of solar panel waste worldwide ...
Esterificação do ácido oleico e acetato de metila com zeólita WO3/USY: efeitos da impregnação do catalisador e modelagem cinética
(Universidade Federal de Santa Maria, 2020-01-20)
This work proposes the use of USY zeolite activated with tungsten oxide in the esterification of oleic acid with methyl acetate. Tunguistic acid was synthesized trought the acid treatment of sodium tungstate and was used ...
Extração com fluido supercrítico e extração assistida por ultrassom na obtenção de compostos antioxidantes produzidos por Diaporthe schini
(Universidade Federal de Santa Maria, 2020-03-06)
The Pampa biome that covers southern Brazil and part of Uruguay and Argentina has one of the richest
biodiversity in the world, which has not yet fully described by science. Part of this biodiversity are the
endophytic ...
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, ...
Catalisadores hierárquicos Fe2O3/ZSM-5: efeito da mesoporosidade do suporte na atividade de nanopartículas de óxido de ferro em reação foto-Fenton
(Universidade Federal de Santa Maria, 2016-08-18)
This work evaluated the synthesis of hierarchical Fe2O3/ZSM -5 catalysts and their catalytic activity in the degradation of azo dye Yellow Tartrazine in photo-Fenton reaction. The chitin powder was applied as a mesopore ...