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Monograph: documento electrónico

Aprovechamiento integral de madera bajo un enfoque de biorrefinería basada en procesos hidrotérmicos / CARMINA REYES PLASCENCIA / 2023

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Monograph: documento electrónico

Biodegradation pretreatment of wood of E. grandis, E. dunnii, and E. benthamiito to work in biorefinery processes / LOPRETTI, MARY / 2016

Título :	Biodegradation pretreatment of wood of E. grandis, E. dunnii, and E. benthamiito to work in biorefinery processes
Tipo de documento:	documento electrónico
Autores:	LOPRETTI, MARY, Autor ; BALDYGA, NATALIA, Autor ; MARÍA GONZÁLEZ, Autor ; LAURA OLAZÁBAL, Autor ; TORRES, MARINA, Autor ; RESQUIN, FERNANDO, Autor ; LEÓNIDAS CARRASCO, Autor
Fecha de publicación:	2016
Número de páginas:	6 p.
ISBN/ISSN/DL:	68621
Nota general:	En: Journal of Renewable Materials, 2016, 4(1), pp.66-71
Idioma :	Inglés (eng)
Clasificación:	BIODEGRADACIÓN LIGNOCELULOSA MADERA PUBLICACIONES TÉCNICOS LATU REFINADO
Resumen:	Nowadays, there is a great interest in using lignocellulosic materials as substrate for the production of biorefinery products. Eucalyptiare good options to use as crops to obtain different kinds of biofuels and derivatives, since their plantations show high adaptation potential to soil and weather conditions in Uruguay. The basic process steps involved in the obtainment of biorefinery materials are: pretreatment, hydrolysis, fermentation and products separation. As delignification is an important process to obtain biorefinery products, in this context the evaluation of the biological (BT) and hydrothermal (TT) pretreatment of different species of Eucaliptus was studied. The possibility of obtaining sugars, alcohols and organic acids was the main focus. The results of these investigations show a good production of reducing sugars (4–5 mg/mL for both BT and TT pretreatments), acetic acid (3–8 mg/mL for BT and 3–7 mg/mL for TT) and isopropanol (18–48 mg/mL for BT and 20–30 mg/mL for TT). In conclusion, the results show similar behaviours for BT and TT pretreatments, which is a quite important result since BT is cheaper and cleaner and thus a more attractive technology.
Creative Commons :	CC BY-NC-ND
Link:	https://catalogo.latu.org.uy/opac_css/index.php?lvl=notice_display&id=31211

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Monograph: documento electrónico

Bioethanol production using high density Eucalyptus crops in Uruguay / SILVANA BONIFACINO / 2021

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Título :	Bioethanol production using high density Eucalyptus crops in Uruguay
Tipo de documento:	documento electrónico
Autores:	SILVANA BONIFACINO, Autor ; RESQUIN, FERNANDO, Autor ; LOPRETTI, MARY, Autor ; LUCIANA BUXEDAS, Autor ; SYLVIA VÁZQUEZ, Autor ; MARIANA GONZÁLEZ, Autor ; ALEJANDRA SAPOLINSKI, Autor ; ANDRÉS HIRIGOYEN, Autor ; DOLDAN, JAVIER, Autor ; CECILIA RACHID, Autor ; LEÓNIDAS CARRASCO, Autor
Fecha de publicación:	2021
Número de páginas:	9 p.
Il.:	tablas, gráficos
ISBN/ISSN/DL:	69361
Nota general:	Este trabajo se llevó a cabo con el aporte de ANII, INIA y TEYMA Uruguay
Idioma :	Inglés (eng)
Clasificación:	BIOMASA ETANOL EUCALYPTUS MADERA PUBLICACIONES TÉCNICOS LATU SACARIFICACIÓN
Resumen:	Experimental scale crops for Eucalyptus grandis, Eucalyptus benthamii, Eucalyptus dunnii and Eucalyptus tereticornis, at 2,220, 4,440 and 6,660 trees ha−1 were established in two soil units, at Paysandú and Tacuarembó, Uruguay. Wood samples were taken from twenty-two-months-old trees, and were used to produce bioethanol by pre-hydrolysis simultaneous saccharyfication and fermentation process (PSSF). Cellulose and lignin content was analyzed. Species and planting density affected biomass production at both sites; the highest value was obtained with E. dunnii at 6,660 trees ha−1 at Paysandú. Cellulose content of wood varied between species at both sites, but only between planting densities at Tacuarembó. The site effect showed that the highest amount of cellulose (14.7 Mg ha−1) was produced at Paysandú. E. benthamii and E. tereticornis wood showed higher lignin contents, conversely, the PSSF yields showed no differences, which led to a bioethanol average of 97 L Mg−1. Bioethanol productivity was associated to the biomass productivity. It was possible to obtain 2,650 L ha−1 of bioethanol using wood from E. benthamii, E. dunnii and E. grandis at 4,440 and 6,660 trees ha−1 at Paysandú, and with E. benthamii at 4,440 and 6,660 trees ha−1, and E. dunnii at 6,660 trees ha−1 at Tacuarembó.
dc.description.sponsorship :	Agencia Nacional de Investigación e Innovación
dc.identifier.anii :	FSE 1 201115615
Creative Commons :	CC BY-NC-ND
En línea:	https://www.cell.com/heliyon/fulltext/S2405-8440(21)00136-5?_returnURL=https%3A% [...]
Link:	https://catalogo.latu.org.uy/opac_css/index.php?lvl=notice_display&id=32387

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Monograph: documento electrónico

Co-production of bioethanol and xylosaccharides from steam-exploded eucalyptus sawdust using high solid loads in enzymatic hydrolysis / ELOISA ROCHÓN / 2022

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Título :	Co-production of bioethanol and xylosaccharides from steam-exploded eucalyptus sawdust using high solid loads in enzymatic hydrolysis : effect of alkaline impregnation
Tipo de documento:	documento electrónico
Autores:	ELOISA ROCHÓN, Autor ; MARÍA NOEL CABRERA, Autor ; VALENTINA SCUTARI, Autor ; MATÍAS CAGNO, Autor ; ABIGAIL GUIBAUD, Autor ; SANTIAGO MARTÍNEZ, Autor ; SILVIA BÖTHIG, Autor ; GUCHIN, NIKOLAI, Autor ; MARIO DANIEL FERRARI, Autor ; CLAUDIA LAREO, Autor
Fecha de publicación:	2022
ISBN/ISSN/DL:	69468
Nota general:	En: Industrial Crops and Products, 175, 114253 DOI: https://doi.org/10.1016/j.indcrop.2021.114253
Idioma :	Inglés (eng)
Clasificación:	ETANOL EUCALYPTUS FERMENTACIÓN PUBLICACIONES TÉCNICOS LATITUD
Resumen:	In this work, Eucalyptus grandis sawdust was investigated as raw matter for the co-production of xylosaccharides (XS) and bioethanol by steam explosion pretreatment with and without a previous NaOH impregnation stage. The acetyl groups were completely removed in the NaOH impregnation step, which inhibited the autohydrolysis during the steam explosion pretreatment. The best results, in terms of XS recovery and glucan content in the pretreated substrate, were obtained when E. grandis was subjected to steam explosion at 200 °C for 10 min without alkaline impregnation. 76 kg of XS per ton of sawdust were obtained from the hemicellulosic hydrolysate and were mostly xylose or short xylo-oligosaccharides (XOS) (83% and 17%, respectively). High hydrolysis efficiencies were obtained using high solids loading (27%) with the steam pretreated material. High ethanol concentrations (75.6 g/L) and yields (259 L per ton of dry raw sawdust) were obtained by simultaneous saccharification and fermentation (SSF), representing a suitable strategy for ethanol production from eucalyptus sawdust.
Creative Commons :	CC BY
En línea:	https://www.sciencedirect.com/science/article/abs/pii/S0926669021010189?via%3Dih [...]
Link:	https://catalogo.latu.org.uy/opac_css/index.php?lvl=notice_display&id=32502

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Monograph: documento electrónico

Enhanced cellulose enzymatic hydrolysis of pilot-scale steam-exploded Eucalyptus grandis chips with previous acid impregnation for bioethanol production / CAMILA BACQUERIÉ / 2025

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Título :	Enhanced cellulose enzymatic hydrolysis of pilot-scale steam-exploded Eucalyptus grandis chips with previous acid impregnation for bioethanol production
Tipo de documento:	documento electrónico
Autores:	CAMILA BACQUERIÉ, Autor ; MAIRAN DENISE GUIGOU BERRETTA, Autor ; FLORENCIA CEBREIROS, Autor ; VALERIA INÉS LARNAUDIE PLACHOT, Autor ; MARÍA E. ROMÁN, Autor ; MATÍAS CAGNO, Autor ; FACUNDO RODRÍGUEZ, Autor ; BONFIGLIO, FERNANDO, Autor ; MARIO DANIEL FERRARI, Autor ; CLAUDIA LAREO, Autor
Fecha de publicación:	2025
Número de páginas:	11 p.
Il.:	tablas, gráficos, fotos
ISBN/ISSN/DL:	69796
Nota general:	En: Energy Conversion and Management: X, 27, 101197. DOI: https://doi.org/10.1016/j.ecmx.2025.101197
Idioma :	Inglés (eng)
Clasificación:	COMBUSTIBLES ETANOL EUCALYPTUS PUBLICACIONES TÉCNICOS LATITUD
Resumen:	The enzymatic hydrolysis of cellulose from Eucalyptus grandis, pretreated through diluted acid impregnation and steam explosion in a continuous pilot-scale reactor, was evaluated for bioethanol production. The best pretreatment conditions were achieved at 180 °C and 0.5 % sulfuric acid, resulting in an enzymatic hydrolysis efficiency of 61.4 %. The liquid fraction contained up to 89 g/L of xylosaccharides, with a xylan recovery (expressed as xylose) of 50.6 %. The effects of solid content (16–24 % w/w), enzyme dose (15–25 FPU/gglucan), and pH (4.8–6) on enzymatic hydrolysis were assessed using a modified Box-Behnken experimental design. All factors, as well as the interaction between solid content and pH, were significant for achieving high glucose concentrations with high enzymatic hydrolysis efficiency. Higher pH values consistently enhanced hydrolysis efficiency. Multi-objective optimization identified the optimal conditions as pH 6, 24 % solid content, and an enzyme dose of 25 FPU/gglucan, maximizing glucose concentration (122 g/L), enzymatic hydrolysis efficiency (68 %), and glucose yield (49 %). Separate enzymatic hydrolysis and fermentation produced 52 g/L of ethanol, with an overall glucan-to-ethanol conversion efficiency of 46 %. In contrast, when pre-saccharification for 24 h was followed by simultaneous saccharification and fermentation, the performance was lower. Only minimal additional hydrolysis occurred during fermentation. These results contribute to the development of more efficient biomass-to-bioethanol conversion processes, supporting the development of sustainable energy technologies based on lignocellulosic resources.
Creative Commons :	CC BY
En línea:	https://www.sciencedirect.com/science/article/pii/S2590174525003290
Link:	https://catalogo.latu.org.uy/opac_css/index.php?lvl=notice_display&id=32950

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