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Aplicação de CO2 supercrítico na delaminação de um painel fotovoltaico visando a recuperação de materiais valiosos
(Universidade Federal de Santa Maria, 2020-08-31)
Photovoltaic panels are technologies that have been gradually increasing in the world market and, after their end of life, are considered as electronic waste. There are 250,000 metric tons of solar panel waste worldwide ...
Produção contínua de ésteres metílicos de ácidos graxos a partir do destilado da desodorização do óleo de soja e acetato de metila em condições supercríticas
(Universidade Federal de Santa Maria, 2021-10-06)
This work aimed to investigate the continuous production of fatty acid methyl esters (FAME) from Soybean Oil Deodorization Distillate (SODD) and Methyl Acetate (MA) under supercritical conditions. SODD has been characterized ...
Extração com fluido supercrítico e extração assistida por ultrassom na obtenção de compostos antioxidantes produzidos por Diaporthe schini
(Universidade Federal de Santa Maria, 2020-03-06)
The Pampa biome that covers southern Brazil and part of Uruguay and Argentina has one of the richest
biodiversity in the world, which has not yet fully described by science. Part of this biodiversity are the
endophytic ...
Extração de óleo da polpa de abacate utilizando gás liquefeito de petróleo pressurizado e dióxido de carbono supercrítico como solventes
(Universidade Federal de Santa Maria, 2016-02-15)
In this work two differents solvents were used for extraction, carbon dioxide (CO2) in the supercritical state and pressurized liquefied petroleum gas (LPG). The purpose was to extract the oil from the dried avocado pulp ...
Catalisadores hierárquicos Fe2O3/ZSM-5: efeito da mesoporosidade do suporte na atividade de nanopartículas de óxido de ferro em reação foto-Fenton
(Universidade Federal de Santa Maria, 2016-08-18)
This work evaluated the synthesis of hierarchical Fe2O3/ZSM -5 catalysts and their catalytic activity in the degradation of azo dye Yellow Tartrazine in photo-Fenton reaction. The chitin powder was applied as a mesopore ...
Uso de biodigestor anaeróbio no tratamento de resíduo orgânico de restaurante
(Universidade Federal de Santa Maria, 2016-07-18)
The generation of local solid waste has increased every year in Brazil. The largest portion of this waste is organic material. Organic waste generated in restaurants in the preparation of meals, as much as in the leftovers ...
Adsorção de metais (Au, Cu e Ni) presentes em lixiviados de contactores de telefones celulares
(Universidade Federal de Santa Maria, 2016-04-06)
In this work, chitin (CTN), chitosan (CTS) and activated carbon (AC) were used as adsorbents to recover metals (Au, Ni and Cu) from leachates of mobile phone wastes. The mobile phone wastes (contactors) were collected and ...
Estudo cinético da produção de ésteres metílicos com dimetil carbonato catalisada por fosfato de nióbio
(Universidade Federal de Santa Maria, 2017-07-31)
The aim of this study was to evaluate commercial niobium phosphate as heterogeneous catalyst in biodiesel production from oleic acid and low-cost raw materials using dimethyl carbonate as acyl receptor. Catalyst was ...
Adsorção de herbicidas utilizando biochar obtido a partir de resíduos de madeira
(Universidade Federal de Santa Maria, 2022-02-26)
Residues of sawdust of the forest species Cedrela fissilis were modified, with a part of the
sample being only physically modified (BCC), while the other was also chemically activated
with zinc chloride (ZnCl2) as an ...
Extração assistida por ultrassom de β-glucanos de Lentinula edodes utilizando solvente eutético e água
(Universidade Federal de Santa Maria, 2022-03-30)
Shiitake is a mushroom rich in β-glucan type polysaccharides, long-chain molecules that have antioxidant properties that are beneficial to human health, in addition to having isolated physical properties of interest to the ...