Buscar
Itens para a visualização no momento 81-90 of 116
Preparação de ferro metálico suportado em polietileno para uso como catalisador flutuante na reação foto-fenton
(Universidade Federal de Santa Maria, 2019-03-25)
In the present paper, zero-valent iron particles were supported on low density polyethylene. The material produced was used as a buoyant catalyst in the removal of the Ponceau 4R azo dye from an aqueous solution via ...
Produção de biodiesel utilizando a lipase Thermomyces lanuginosus como catalisador
(Universidade Federal de Santa Maria, 2017-03-03)
With the inevitable decline in fossil fuel reserves, recent research has consolidated
biodiesel as a promising source of energy, especially in the replacement of petroleum
diesel. Several technologies have proven appropriate ...
Síntese, caracterização e avaliação catalítica, em reação foto-Fenton, de compósitos Fe2O3/grafite
(Universidade Federal de Santa Maria, 2018-07-31)
The presence of dyes in wastewater, most of them recalcitrant, contaminate the aquatic
environment, as they prevent the penetration of light, damaging the local fauna and flora. In
addition, they may ...
Processamento sequencial de endocarpo de Butia capitata por meio de hidrólise com água subcrítica e liquefação hidrotérmica para obtenção de derivados líquidos e sólidos
(Universidade Federal de Santa Maria, 2022-09-30)
Butia capitata endocarp has potential to processing into wide variety of products. The
processing of this biomass by environmentally friendly technologies such as subcritical
water hydrolysis and hydrothermal liquefaction ...
Recuperação de beta-caroteno de óleo de palma bruto através de operações de adsorção e dessorção: estudos de cinética, equilíbrio e termodinâmica
(Universidade Federal de Santa Maria, 2023-01-12)
The palm oil is used in several industrial segments. During the palm oil refining
process, minor compounds such as β-carotene, phytosterols, squalene and tocotrienols are lost
due to the process conditions applied. Among ...
Extração de óleo de soja utilizando solventes verdes: cinética, termodinâmica e transferência de massa
(Universidade Federal de Santa Maria, 2022-09-02)
This dissertation focuses on the kinetic, thermodynamic, and mass transfer study on applying
green solvents in soybean oil extraction. The first work discusses ethyl acetate and 1-butanol
solvents application. Temperature ...
Desenvolvimento e caracterização de um compósito HDL/biocarvão para adsorção de corante vermelho do Congo
(Universidade Federal de Santa Maria, 2022-08-29)
In this work the utilization of activated lychee peel biochar (ALPB) and Ca-Cr layered double
hydroxide for production of a composite was investigated. The CaCr/HDL-ALPB was
synthetized by coprecipitation and characterized ...
Esterificação catalítica de ácido acético e glicerol para a produção de aditivos de combustível
(Universidade Federal de Santa Maria, 2022-09-02)
Biodiesel production through the transesterification route is on the rise, as a result, glycerol, a low-cost by-product of biodiesel, has become more saturated in the international market. A potential solution to this ...
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 ...