Buscar
Itens para a visualização no momento 41-50 of 112
Aplicação de zeólita mesoporosa sintetizada utilizando quitina para a adsorção de corantes catiônicos
(Universidade Federal de Santa Maria, 2018-06-26)
Zeolites are microporous materials, in general, which hinder the diffusive transport of certain molecules. Thus, to increase the possibilities of applications of this material, some studies proposed an addition of mesoporosity ...
Análise da eficiência de extratos vegetais para aplicação como inibidores de corrosão
(Universidade Federal de Santa Maria, 2019-03-27)
Naturals inhibitors can be obtained through vegetable extracts or biomass sources, contributing to attenuate
the oxidative process, reducing the corrosion and being an alternative ecofriendly. Recent researches, ...
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 ...
Recuperação seletiva de índio a partir da técnica de extração em fase sólida utilizando nanofibras com DEHPA
(Universidade Federal de Santa Maria, 2019-02-21)
The main objective of this work was to develop a nanomaterial able to selectively extract and
recover indium (In) from obsolete cell phone LCD screens. For this, Nylon 6 nanofibers were
produced and modified with ...
Síntese e aplicação do compósito geopolímero/Fe3O4 como adsorvente magnético para a remoção de contaminante orgânico em efluente líquido
(Universidade Federal de Santa Maria, 2019-07-31)
Accompanying population growth, industries, in addition to supplying the needs of the population, have become one of the main sources of environmental contamination, with the textile sector being the main responsible for ...
Reciclagem de cabos coaxiais e lâmpadas de LED aplicando operações de processamento mecânico
(Universidade Federal de Santa Maria, 2019-08-02)
Technological development, although linked to quality of life improvement, results in the increase of waste electrical and electronical equipment, which cables and LED bulbs are part of. Thus, new approaches towards recycling ...
Síntese e caracterização do compósito SnFe2O4/polipirrol para utilização na degradação do corante tartrazina via processo foto-fenton
(Universidade Federal de Santa Maria, 2019-07-22)
One of the major concerns with the environment and aquatic life is related to the discharge of
effluents containing synthetic dyes. Among the most used synthetic dyes is tartrazine, a lemon
yellow azo dye, used in the ...
Avaliação de modificações pós-síntese em zeólita ZSM-5 comercial aplicada na esterificação de ácido oleico com acetato de metila
(Universidade Federal de Santa Maria, 2019-11-25)
Zeolites are considered the most important catalysts in industry due to their unique properties. Among these materials, ZSM-5 highlights because of its stability and versatility, presenting a wide range of applications. ...
Hidrólise enzimática de bagaço de malte usando tecnologias alternativas visando à obtenção de açúcares fermentescíveis
(Universidade Federal de Santa Maria, 2016-07-26)
This work aimed to study the enzymatic hydrolysis of malt bagasse, using mechanical agitation, ultrasonic probe and supercritical CO2. Enzymatic hydrolysis was performed on granular starch. For this, was used a commercial ...
Pirólise de resíduos cervejeiros para a produção de adsorventes
(Universidade Federal de Santa Maria, 2020-02-13)
Contamination of water by organic compounds can cause damage to the environment and to humans. Adsorption is a promising process for removing these pollutants. In addition, the adsorbents used can be regenerated. Agricultural ...