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Recuperação de cério e lantânio lixiviados de fosfogesso por adsorção utilizando resíduos de uva
(Universidade Federal de Santa Maria, 2023-08-25)
Phosphogypsum is a byproduct of the fertilizer industry with a high environmental impact,
formed during the production of phosphoric acid from phosphate rock. It mainly comprises
gypsum and may contain impurities, including ...
Adsorção de cristal de violeta empregando hidróxido duplo lamelar níquel/índio
(Universidade Federal de Santa Maria, 2023-08-25)
The textile industry can produce about 200 L of liquid effluent for every kilogram of textile
fabric manufactured. Between 50-55% of the liquid effluent generated in the textile industry is
composed of dyes from the ...
Aplicação de carvão ativado de casca de arroz na remoção de ferro e níquel do chorume de aterro sanitário
(Universidade Federal de Santa Maria, 2023-11-30)
In the present work, the prospects of dealing with various environmental problems in the
South region of Brazil were demonstrated, turning a local residual of rice peel into an
effective adsorbent, which was then applied ...
Adsorção de fenol por biocarvão de Eucalyptus saligna ativado com NiCl2.6H2O
(Universidade Federal de Santa Maria, 2023-11-30)
The treatment of formation water still represents one of the greatest challenges in the oil
industry. Among the various pollutants found in produced water, phenol is of particular
concern, due to its high toxicity. The ...
Obtenção de açúcares fermentescíveis, plataformas químicas, bio-óleo e carvão a partir do processamento hidrotérmico da serragem
(Universidade Federal de Santa Maria, 2024-02-16)
In this research, pine wood sawdust was subjected to hydrothermal processing of subcritical
hydrolysis and subcritical liquefaction, synergistically, in semi-continuous operation mode, in
order to evaluate the production ...
Estudo termodinâmico, cinético e de otimização da extração de óleo do farelo de arroz utilizando solventes renováveis
(Universidade Federal de Santa Maria, 2023-10-16)
The application of renewable solvents in the extraction of rice bran oil as a substitute for hexane
is the focus of this dissertation. In the first case study, ethanol and ethyl acetate solvents were
applied. To evaluate ...
Pirólise de casca de soja in natura e hidrolisada
(Universidade Federal de Santa Maria, 2023-09-26)
The study aimed to evaluate the obtaining of bio-oil and bio-char through the pyrolysis process from fresh soybean hulls hydrolyzed by subcritical water. The biomass was characterized according to its lignocellulosic ...
Hidrólise com água subcrítica da casca de soja catalisada por WO3/ZrO2 para conversão de açúcares em plataformas químicas
(Universidade Federal de Santa Maria, 2022-09-22)
Millions tons of soybean husk are annually produced in Brazil, a lignocellulosic residue
which have potential to be utilized as feedstock in the production of sugars (Glucose,
Cellobiose, Xylose and Arabinose) and, ...
Produção de nanofibras compostas de CuO para remoção de chumbo (II) de soluções aquosas
(Universidade Federal de Santa Maria, 2024-02-23)
Water contamination by heavy metals such as lead is a major concern due to the potential health hazards associated with exposure to this metal. In this context, the main objective of this study was the development of ...
Desenvolvimento de materiais carbonados dopados com nitrogênio para aplicação em processos adsortivos e catalíticos
(Universidade Federal de Santa Maria, 2024-02-22)
Nitrogen doping (N-doping) has been widely applied in materials synthesized under controlled
conditions. However, its impact remains unclear when employed in converting various residues
into cost-effective and efficient ...