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Itens para a visualização no momento 91-100 of 114
Recuperação seletiva de ouro de pinos de placa de circuitos impressos empregando nanofibras funcionalizadas com Cyanex 272
(Universidade Federal de Santa Maria, 2022-08-31)
Advances in technological development mean that the recovery of rare and strategic
metals from secondary sources has become essential, due to the high demand for these metals
in the production of electronic equipment. ...
Avaliação do processo sequencial de hidrólise e liquefação hidrotérmica do sabugo de milho
(Universidade Federal de Santa Maria, 2022-08-22)
The growing energy demand and limitations in the use of fossil fuels encourage the research of different renewable energy sources, such as agro-industrial residues. The corn crop in Brazil corresponds to 40% of the national ...
Prospecção de microrganismos e avaliação de metodologias para a maximização da atividade fitotóxica visando o desenvolvimento de bioherbicidas
(Universidade Federal de Santa Maria, 2022-11-18)
Weeds are one of the main problems in agriculture. They compete with the culture of
interest for resources such as water, light, and nutrients. In modern agriculture, chemical
herbicides are the most widely used method ...
Simulação de processos catalíticos para a produção de biodiesel sem glicerol - uma análise técnica, econômica e energética
(Universidade Federal de Santa Maria, 2023-02-15)
Although the use of biodiesel presents many economic, social and environmental
advantages, the biodiesel production still has a high cost. Most production processes
use alcohol as acyl receptor, producing glycerol as a ...
Avaliação das características de bio-óleo e biochar produzidos por pirólise a partir de biomassas lignocelulósicas
(Universidade Federal de Santa Maria, 2023-03-09)
Lignocellulosic biomass is considered one of the alternative renewable resources with the
potential to supply the high world energy demand, by reducing dependence on fossil fuels. The
use of this valuable resource as raw ...
Adsorção de corante alaranjado de metila aplicando hidróxidos duplos lamelares de Ca/Fe suportado em biochar de serragem de eucalipto
(Universidade Federal de Santa Maria, 2023-02-28)
Contamination of water resources is a topic much discussed by society due to the serious
problems it entails for public health. Among several pollutants, dyes represent the largest
group of organic contaminants. In view ...
Polimento de efluentes industriais através da adsorção com biochar proveniente de resíduos da vinificação
(Universidade Federal de Santa Maria, 2023-02-10)
The applicability of biochar in water treatment has been gaining interest due to its sustainability and low production
cost. Thus, this work proposes the use of Biochar from Serra Gaúcha (BSG) as an adsorption element for ...
Preparação e caracterização de carvão ativado magnético obtido a partir da serragem de madeira sapelli (Entandrophragma cylindricum) para adsorção do corante azul brilhante
(Universidade Federal de Santa Maria, 2023-03-10)
The contamination of water bodies by dyes has been a problem to be fought because the large
amounts of effluents released into water bodies are harmful to the environment and living
beings. Thus, it is necessary to develop ...
Modificações na casca de arroz para a adsorção de azul de metileno em batelada e leito fixo
(Universidade Federal de Santa Maria, 2016-08-12)
In this work, rice husk and its modifications were investigated as methylene blue adsorbents, using discontinuous (batch) and continuous (fixed bed) adsorption operations. The rice husk was modified through alternative ...
Comparação de modelos de aprendizado de máquina interpretáveis na predição de calor de combustão e de formação
(Universidade Federal de Santa Maria, 2023-04-24)
The determination of physical-chemical properties for substances is of paramount importance
in the field of chemical engineering, as these are related to equipment sizing, operational
conditions, and process efficiencies. ...