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Desenvolvimento de adsorventes de nanofibras de quitosana/nylon 6 e tanino/nylon 6 por Forcespinning para remoção de cromo em meio aquoso
(Universidade Federal de Santa Maria, 2017-08-25)
New nanofiber materials composed of chitosan/nylon 6 and tannin/nylon 6 were prepared by the Forcespinning method and were used as adsorbents for the removal of chromium VI from aqueous solutions. Under optimum experimental ...
Adsorção do corante verde malaquita utilizando palha de milho modificada por ultrassom
(Universidade Federal de Santa Maria, 2017-07-17)
Colored effluents containing dyes are generated in different industrial sectors, such as textiles, cellulose,
paper, leather, paint, among others. The treatment of these effluents is a current environmental problem, ...
Transesterificação de óleo de soja com carbonato de dimetila catalisada por metóxido de potássio
(Universidade Federal de Santa Maria, 2017-08-04)
World biodiesel production is growing up every year mainly due to government policies that
require its consumption. However, biodiesel self-cost still makes it uncompetitive compared
to petrodiesel, and one of the reasons ...
Substituição do aço inoxidável em uma coluna de destilação por material polimérico de menor custo
(Universidade Federal de Santa Maria, 2017-08-28)
The ethanol production in small scale, with maximum capacity of 5.000 l/day, deals with serious problems related to low process performance, due to the low extraction of raw material, inefficiency of ethanol separation ...
Cinética da produção de butenos a partir de butanol empregando catalisadores ácidos
(Universidade Federal de Santa Maria, 2017-12-01)
to environmental requirements, new producing routes have been pursued and the butanol
dehydration reaction is one of the most promising. HZSM-5 zeolites and -alumina acid
catalysts were synthesized at different conditions ...
Geopolímero mesoporoso obtido a partir de metacaulim e cinza de casca de arroz como alternativa de adsorvente para remoção de corantes
(Universidade Federal de Santa Maria, 2017-08-11)
The industrial activity has contributed greatly to a significant increase in the concentrations of dyes in water, representing an important source of contamination of the water bodies, especially when we consider that such ...
Aproveitamento de resíduos do processamento de uva para a biossorção de corantes e prata
(Universidade Federal de Santa Maria, 2017-12-05)
In this work, the potential of wine industry wastes as alternative biosorbents to remove Brilliant Blue (BB) and Amaranth Red (AR) dyes as also Ag ions from aqueous media was investigated; all experiments were performed ...
Avaliação da interesterificação catalítica de óleo de macaúba com acetato de metila
(Universidade Federal de Santa Maria, 2017-01-27)
The world concern about the increasing of energy demand, depletion of fossil fuel reserves and global warming aroused interest in biodiesel production. Commonly produced through basic homogeneous transesterification, the ...
Obtenção de ácido giberélico por fermentação em estado sólido empregando resíduo de cervejaria e farelo de arroz bruto como substratos
(Universidade Federal de Santa Maria, 2017-03-21)
Gibberellic acid (GA3), a phytohormone belonging to the group of gibberellins is widely used in agricultural formulations, since it allows increased productivity in different types of crops. Due to the high final cost of ...
Extração de ácidos graxos produzidos por Mortierella isabellina utilizando fluido supercrítico e ultrassom
(Universidade Federal de Santa Maria, 2017-03-17)
Polyunsaturated fatty acids (PUFA) have received considerable attention in recent years due to the benefits associated with their consumption. Among these benefits, they emphasize their multiple physiological actions, ...