Cellulosic Ethanol
Mostrando 1-12 de 36 artigos, teses e dissertações.
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1. A Study of Chemical Composition and Enzymatic Hydrolysis of Solid Organic Waste from Agrosilvopastoral Systems
Agrosilvopastoral waste, regarding agriculture and agro-industry sectors, is pointed as a promising sustainable raw material for biofuels production, specially concerning exploitation of lignocellulosic organic residues for fermentable sugars and cellulosic ethanol output, being therefore necessary to investigate the potential of these substrates concerning
J. Braz. Chem. Soc.. Publicado em: 16/09/2019
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2. The isolation of pentose-assimilating yeasts and their xylose fermentation potential
ABSTRACT For the implementation of cellulosic ethanol technology, the maximum use of lignocellulosic materials is important to increase efficiency and to reduce costs. In this context, appropriate use of the pentose released by hemicellulose hydrolysis could improve de economic viability of this process. Since the Saccharomyces cerevisiae is unable to fermen
Braz. J. Microbiol.. Publicado em: 2018-03
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3. Fodder radish cake (Raphanus sativus L.) as an alternative biomass for the production of cellulases and xylanases in solid-state cultivation
Abstract Fodder radish (FR) is an oilseed crop with a high potential for biodiesel production due to its high productivity and the quality of its seed oil. FR oil extraction results in a residue that is rich in protein and fiber. In this study, FR cake (FRC) was evaluated as carbon and nitrogen source for the production of cellulases and xylanases using Peni
Braz. J. Chem. Eng.. Publicado em: 2017-07
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4. Ethanol Production from Sugarcane Bagasse Using Phosphoric Acid-Catalyzed Steam Explosion
The steam explosion was carried out in the absence (autohydrolysis) and presence of phosphoric acid to evaluate the effects of temperature (180 and 210 °C), acid concentration (0 and 19 mg g-1, dry basis) and pretreatment time (5 and 10 min) on the structure and reactivity of sugarcane bagasse. Glucan recovery was used as the main response factor for pretre
J. Braz. Chem. Soc.. Publicado em: 2016-10
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5. Production of bioethanol using agricultural waste: banana pseudo stem
India is amongst the largest banana (Musa acuminata) producing countries and thus banana pseudo stem is commonly available agricultural waste to be used as lignocellulosic substrate. Present study focuses on exploitation of banana pseudo stem as a source for bioethanol production from the sugars released due to different chemical and biological pretreatments
Braz. J. Microbiol.. Publicado em: 2014-09
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6. Production of fermentable sugars by combined chemo-enzymatic hydrolysis of cellulosic material for bioethanol production
To change the recalcitrant nature of the lignocellulosic material for maximum hydrolysis yield, a comprehensive study was done by using sulphuric acid as an exclusive catalyst for the pretreatment process. The enzymatic digestibility of the biomass [Water Hyacinth: Eichhornia crassipes] after pretreatment was determined by measuring the hydrolysis yield of t
Braz. J. Chem. Eng.. Publicado em: 2014-06
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7. Otimização do pré-tratamento hidrotérmico da palha de cana-de-açúcar visando à produção de etanol celulósico
The sugarcane industry has huge potential for biorefinery concept application, given its development in recent years. In this context, cane sugar straw has become an attractive raw material for biofuel production. This study aims to investigate the chemical composition of cane sugar straw from different regions of Brazil, and to optimize a hydrothermal pretr
Quím. Nova. Publicado em: 2014
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8. Use of sorghum straw (Sorghum bicolor) for second generation ethanol production: pretreatment and enzymatic hydrolysis
Agronomic biomass yields of forage sorghum BRS 655 presented similar results to other energy crops, producing 9 to 12.6 tons/ha (dry mass) of sorghum straw. The objective of this study was to evaluate the lignocellulosic part of this cultivar in terms of its potential in the different unit processes in the production of cellulosic ethanol, measuring the effe
Quím. Nova. Publicado em: 2013
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9. Química e sustentabilidade: novas fronteiras em biocombustíveis
This contribution discusses the state of the art and the challenges in producing biofuels, as well as the need to develop chemical conversion processes of CO2 in Brazil. Biofuels are sustainable alternatives to fossil fuels for providing energy, whilst minimizing the effects of CO2 emissions into the atmosphere. Ethanol from fermentation of simple sugars and
Quím. Nova. Publicado em: 2013
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10. Caracterização bioquímica, biofísica e estrutural da Celobiohidrolase I de Trichoderma harzianum / Biochemical, biophysical and structural characterization of Cellobiohydrolase I from Trichoderma harzianum
Devido à sua importante atividade celulolítica, o fungo Trichoderma harzianum possui um grande potencial de aplicação na hidrólise da biomassa. No entanto, as celulases deste fungo filamentoso ainda não foram caracterizadas em profundidade. A celobiohidrolase I (CBHI) é a principal enzima celulolítica produzida por Trichoderma sp. e atualmente é uma
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 01/10/2012
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11. Produção de celulases, purificação e caracterização bioquímico-cinética da β-galactosidase produzida por fungo isolado da região amazônica / Production of cellulases, purification and characterization of kinetic biochemical ß-galactosidase produced by fungus isolated from the Amazon.
The selection of cellulase-producing fungi is one of the possible estrategies for obtaining necessary enzymes to hydrolyze the lignocellulosic material of plant biomass and thereby contribute to the viability of cellulosic ethanol production. The aim of this study was achive a screening of isolated fungi from the Amazon region to assess the production of enz
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/06/2012
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12. Caracterização estrutural das hemiceluloses de paredes celulares de cana-de-açúcar / Characterization of the sugarcane cell wall hemicelluloses
O Brasil, segundo maior produtor mundial de biocombustíveis, produz etanol a partir da extração e fermentação de sacarose de colmos de cana-de-açúcar. A utilização da energia presente nas ligações químicas entre os carboidratos da parede celular (celulose, hemiceluloses e pectina), das biomassas de folha e bagaço (hoje ambos considerados resídu
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 11/06/2012