Buscar
Itens para a visualização no momento 31-40 of 112
Síntese de compósitos magnéticos ferrita/quitosana para adsorção de corantes e fármacos
(Universidade Federal de Santa Maria, 2019-03-08)
Water is a cornerstone to the flourishment of any existing life form and as such, need to be preserved. Working on development and improvement of technologies which promote an efficient effluent treatment, preventing ...
Modelagem cinética da produção de biodiesel em estado supercrítico com catalisador heterogêneo
(Universidade Federal de Santa Maria, 2018-02-26)
The main objective of this study was to develop a kinetic model for catalytic supercritical reaction with methyl acetate to produce fatty acid methyl esters. Reaction models and estimated kinetic parameters were proposed ...
Aplicação da separação eletrostática na reciclagem de resíduos poliméricos e baterias de íon de lítio
(Universidade Federal de Santa Maria, 2016-03-23)
The increasing industrial development results in a large consumption of products and materials. Among them, stand out the polymeric materials, due to their versatility and low cost, and electrical and electronic equipment ...
Resíduos poliméricos: quantificação, caracterização, lavagem e tratamento do efluente gerado no processo
(Universidade Federal de Santa Maria, 2016-04-05)
With the industrialization, the demographic growth and the consumption patterns of society there is an increase in the generation of solid waste, among which include polymeric waste. Thereby, the recycling emerges as a ...
Preparação do adsorvente magnético geopolímero/ferro metálico para remoção de contaminante orgânico em efluente aquoso
(Universidade Federal de Santa Maria, 2019-07-31)
In this work the synthesis of a magnetic geopolymer from silica, metakaolin, iron zero-valent, soybean oil, sodium hydroxide and hydrogen peroxide was proposed. The magnetic geopolymer was characterized by X-ray diffraction, ...
Pré-tratamento de casca de arroz utilizando líquido iônico [C16MIM][Br]
(Universidade Federal de Santa Maria, 2019-08-05)
Rice husk, an agricultural residue, is a cellulose rich material which present potential to produce second generation ethanol, however, due its recalcitrant structure related to the presence of lignin and silica, a ...
Produção catalítica de biodiesel de soja sem glicerol
(Universidade Federal de Santa Maria, 2016-09-06)
This work has as goal to evaluate the use of heterogeneous catalysts on interesterification reaction for glycerol-free biodiesel production. Interesterification is a reaction between the triglyceride ester from vegetable ...
Síntese e caracterização de biopolímeros funcionalizados com APTES (3–aminopropiltrietoxisilano) para a adsorção de corante amarelo crepúsculo
(Universidade Federal de Santa Maria, 2019-08-05)
The biopolymers chitin (CTN) and chitosan (CTS) were functionalized with APTES (3–aminopropyltriethoxysilane) in order to enhance its adsorption potential for sunset yellow dye (SYD). The functionalization was evaluated ...
Fermentação em estado sólido assistida por ultrassom para a produção de enzimas de degradação de parede celular
(Universidade Federal de Santa Maria, 2019-08-05)
The agro-industry waste is low cost, high availability and it can be transformed into products of important economic value. The biotransformation of these substrates into compounds with an aggregated value from the solid-state ...
Modelagem cinética da reação de conversão de etanol em butanol com catalisadores de mg/al derivados de hidrotalcitas
(Universidade Federal de Santa Maria, 2019-03-26)
Butanol has been suggested as possible substitute of gasoline or to be used as fuel additive. At the moment, its main production route is from fossil raw material, allowing renewable routes from bioetanol to be studies, ...