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| RAMBO,Magale Karine Diel; ALEXANDRE,Gerso Pereira; RAMBO,Michele Cristiane Diel; ALVES,Aparecido Roberto; GARCIA,Wokimar T.; BARUQUE,Edmond. |
| Abstract In search for renewable energy sources, the Brazilian residual biomasses stand out due to their favorable physical and chemical properties, low cost, and their being less pollutant. Therefore, they are likely to be used in biorefineries in the production of chemical inputs to substitute fossil fuels. This substitution is possible due to the high contents of carbohydrates (>40%), low contents of extractives (<20%), ashes (<8%) and moisture (<8%) found in these residual biomasses. High calorific values of all residues also offer them the chance to be used in combustion. A principal components analysis (PCA) was performed for better understanding of the samples and their hysic-chemical properties. Thus, this study aimed to characterize... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bioproducts; Biorefinery; Hysic-chemical properties; Lignocellulosic residues. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612015000400605 |
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| RAMBO,Magale Karine Diel; FERREIRA,Márcia Miguel Castro; MELO,Polyana Morais de; SANTANA JUNIOR,Claúdio Carneiro; BERTUOL,Daniel Assumpção; RAMBO,Michele Cristiane Diel. |
| Abstract The real-time prediction in biorefinery industries has become essential. Models using partial least square regression (PLS) were developed to predict moisture, ash, volatile matter, fixed carbon and organic matter of coconut and coffee residues. In this study, 49 samples were collected and near infrared spectroscopy were applied to predict moisture, ash, volatile matter, fixed carbon and organic matter. For external validation 25% of the set samples were used. Moisture and volatile matter were predicted with coefficients of determination (R2cal) above 0.90, and standard errors (RSD) of the estimate of 14.4% and 2.26%, respectively. Models of ash and organic matter show R2cal > 0.77 and RSD values < 20.4%. For the external validation, the low... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biomass; Figures of merit; Pre-treatments; External validation. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612020000200444 |
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| SCAPIN,Elisandra; RAMBO,Magale Karine Diel; VIANA,Guenther Carlos Couto; MARASCA,Nicole; LACERDA,Gabriela Eustáquio; RAMBO,Michele Cristiane DIEL; FERNANDES,Rachel de Moura Nunes. |
| Abstract In the current search for renewable energy sources, residual biomass has been highlighted as a potential source of chemical compounds that are currently obtained from petroleum. Among the derivatives obtained from this, 5-hydroxymethylfurfural and furfural are considered key parts in this process as they are key compounds in the fine chemical industry. This work aims at the use of the rice husks and soybean peel for the synthesis of 5-hydroxymethylfurfural and furfural using the ionic liquid [BMIM][Br]. The physical pre-treatment of biomasses was carried out followed by acid hydrolysis. For the synthesis of the furanic compounds, different temperatures and reaction times were used. The products obtained in each step were analyzed by infrared... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Furanic compounds; Raw biomass; Agricultural waste; Green solvents. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612019005023107 |
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