Cellulose Paper
Mostrando 13-24 de 174 artigos, teses e dissertações.
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13. Binder Behavior on Chromite-Carbon Composite Pellets
The influence of binders on the mechanical properties of chromite, self-reducing pellets, after subjecting to high temperatures, is analyzed in this paper. Bentonite, sodium silicate, and a combination of bentonite with carboxymethyl cellulose (CMC) were tested with different contents. All of the raw materials were characterized by chemical analysis and part
Mat. Res.. Publicado em: 29/09/2016
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14. Laccase produced by a thermotolerant strain of Trametes trogii LK13
Thermophilic and thermotolerant micro-organisms strains have served as the natural source of industrially relevant and thermostable enzymes. Although some strains of the Trametes genus are thermotolerant, few Trametes strains were studied at the temperature above 30 °C until now. In this paper, the laccase activity and the mycelial growth rate for Trametes
Braz. J. Microbiol.. Publicado em: 2015-03
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15. Vegetal fibers in polymeric composites: a review
The need to develop and commercialize materials containing vegetal fibers has grown in order to reduce environmental impact and reach sustainability. Large amounts of lignocellulosic materials are generated around the world from several human activities. The lignocellulosic materials are composed of cellulose, hemicellulose, lignin, extractives and ashes. Re
Polímeros. Publicado em: 2015-02
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16. Molecular characterization of a Xylanase-producing fungus isolated from fouled soil
Xylanase (EC 3. 2. 1. 8), hydrolyzes xylo-oligosaccharides into D-xylose and required for complete hydrolysis of native cellulose and biomass conversion. It has broad range of applications in the pulp and paper, pharmaceutical and Agri-food industries. Fifty fungal species were isolated from the fouled soil around an oil refinery and screened for the product
Braz. J. Microbiol.. Publicado em: 2014-12
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17. Imobilização e caracterização de lacase e seu uso na biodegradação de efluentes de indústrias papeleiras
Laccase from Aspergillus sp was immobilized on glutaraldehyde-activated chitosan beads. A comparative study between free and immobilized laccase was conducted and the potential of the resulting immobilized derivative in the biodegradation of pulp and paper mill effluent was evaluated. The immobilized laccase is more resistant to various denaturing conditions
Quím. Nova. Publicado em: 2014-04
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18. Kinetic study of the enzymatic hydrolysis of sugarcane bagasse
This work presents a kinetic study of the enzymatic hydrolysis of three cellulosic substrates: filter paper (FP), used as a low recalcitrance substrate model; steam exploded sugarcane bagasse (SB); and weak acid pretreated SB (1:20 dry bagasse:H2SO4 solution 1% w/w), the last two delignified with 4% NaOH (w/w). The influence of substrate concentration was as
Braz. J. Chem. Eng.. Publicado em: 2013-09
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19. Cellulose-reinforced composites: from micro-to nanoscale
This paper present the most relevant advances in the fields of: i) cellulose fibres surface modification; ii) cellulose fibres-based composite materials; and iii) nanocomposites based on cellulose whiskers or starch platelet-like nanoparticles. The real breakthroughs achieved in the first topic concern the use of solvent-free grafting process (plasma) and th
Polímeros. Publicado em: 2013
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20. Bioethanol production from rice straw residues
A rice straw -cellulose utilizing mold was isolated from rotted rice straw residues. The efficient rice straw degrading microorganism was identified as Trichoderma reesei. The results showed that different carbon sources in liquid culture such as rice straw, carboxymethyl cellulose, filter paper, sugar cane bagasse, cotton stalk and banana stalk induced T. r
Braz. J. Microbiol.. Publicado em: 2013
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21. Clonagem e estudos de expressão de enzimas do fungo filamentoso Trichoderma harzianum IOC-3844 envolvidas na degradação de biomassa
The plant biomass is a large-scale available resource and one of its more important applications is the second-generation ethanol production. However, the enzyme cost is one of the biggest barriers for economically viable ethanol from biomass. Therefore, it is important to identify fungal strains that can produce high concentrations of plant biomass-degradin
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 06/07/2012
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22. Biosynthesis, purification and characterization of endoglucanase from a xylanase producing strain Aspergillus niger B03
An extracellular endoglucanase was isolated from the culture liquid of xylanase producing strain Aspergillus niger B03. The enzyme was purified to a homogenous form, using consecutive ultrafiltration, anion exchange chromatography, and gel filtration. Endoglucanase was a monomer protein with a molecular weight of 26,900 Da determined by sodium dodecyl sulfat
Brazilian Journal of Microbiology. Publicado em: 2012-03
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23. Capacidade de deterioração de cepas de Eucalyptus spp. por fungos xilófagos / Capacity of deterioration of stumps of Eucalyptus spp. by xylophagous fungi
On the reform of the forest stand, after the cutting of trees, the remaining strains of Eucalyptus spp. must be removed. The natural degradation of stumps of eucalypts after clear cutting is slow. The mechanical destock raises the cost of production, involves machinery traffic on the ground favoring soil compaction and hindering the growth and distribution o
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 15/12/2011
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24. Dinâmica agrária e a territorialização do complexo celulose/papel na microrregião de Três Lagoas/MS
Definimos como objetivo da pesquisa, analisar a dinâmica agrária na Microrregião de Três Lagoas na última década. Consequentemente, também são alvos de estudo, as transformações territoriais a partir da implantação do monocultivo do eucalipto nessa Microrregião, cujo processo está aliado à construção na atualidade da maior fábrica de celulo
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 25/03/2011