Material From Renewable Source
Mostrando 1-12 de 23 artigos, teses e dissertações.
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1. An alternative energy generation from charcoal produced from Brazilian pine (Araucaria angustifolia (Bert.) O. Ktze) seed residues
The perspective is that the energy demand will grow in the coming decades worldwide. The search for renewable energy sources is urgent and necessary. Residual biomass may be a promising source of raw material for obtaining bioenergy. Thus, this research sought to evaluate the energetic and physicochemical properties of residues from the seeds of Brazilian pi
Química Nova. Publicado em: 2022
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2. CARACTERIZAÇÃO FÍSICA E QUÍMICA DA BIOMASSA USADA COMO COMBUSTÍVEL SÓLIDO EM UMA CALDEIRA
Biomass is a renewable energy source most used in the world, however, depending on the chemical properties and origin of the material used as biofuel, the amount of ash generated during combustion can be high, harming the energetic harnessing. The objective of this study was to characterize chemically and physically biomass: bark, sawdust, and urban pruning;
Quím. Nova. Publicado em: 2021-01
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3. Experimental study on waterproofing MDF with castor oil-based vegetal polyurethane
ABSTRACT This study aimed to analyze the waterproofing MDF with different coatings. For this, a comparative study was conducted with the following coatings on MDF: Vegetable polyurethane resin on castor oil-based, acrylic lacquer and marine varnish. To carry out the research, sewed up the samples in sequence, they received the coatings, and then we performed
Matéria (Rio J.). Publicado em: 10/08/2017
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4. Thermogravimetric and spectroscopic study (TG–DTA/FT–IR) of activated carbon from the renewable biomass source babassu
Activated carbons (ACs) with well–developed microstructure and high microporosity were obtained from biomass by potassium hydroxide activation. The preparation process consisted in producing carbon materials in the ratios of activating agent to raw material 70:30, 50:50, 30:70 and 25:75 (w/w) characterized by thermal analysis coupled to spectroscopy (TG–
Quím. Nova. Publicado em: 2017-04
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5. Vibrational analysis of coconut fiber-PP composites
Many researchers have been studying coconut fibers due to its being a natural and renewable source. Moreover, coconut waste is discarded in landfills, bringing environmental problems because this material, although natural, takes time to be degraded. The use of natural fibers such as coconut fibers has become industrially attractive because of its low cost,
Mat. Res.. Publicado em: 17/12/2013
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6. Energetic use of wood waste in one center for the production of red ceramics in São Paulo State / Uso energético de resíduos madeireiros em um pólo de produção de cerâmicas vermelhas do Estado de São Paulo
The use of forest biomass is an important alternative of renewable energy source, economic, technical and environmentally viable, fighting for space with other energy sources, more expensive or non-renewable, such as natural gas, electricity, diesel and LPG. Within the industrial sector, biggest consumer of biomass energy, the segment of red ceramics represe
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 22/08/2012
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7. Produção de hidrogênio e etanol em reator anaeróbio de leito fluidizado: avaliação do desempenho de três materiais suporte em diferentes condições operacionais
Hydrogen and ethanol production using microorganisms is a promising area of technological development from a wide variety of renewable and alternative to this production is the use of anaerobic fluidized bed reactor (AFBR). One of the factors that most influence the performance of the AFBR is the material support, which must provide abrasion resistance, poro
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 09/03/2012
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8. Incorporação de energia na vida útil de uma colhedora autopropelida de cana-de-açúcar / Energy embodiment in life cycle of a self-propelled sugarcane harvester
The energy subject is one of the main challenges of 21st century. The geopolitical and environment aspects, they are concern sources to the current economic model. Brazil presents advantages in comparison to the world due to the use of renewable energy. Since 2007, products from the sugarcane have assumed the first place as a renewable source in the Brazilia
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 23/11/2011
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9. Tableros de partículas de bambú (Bambusa vulgaris Schrad) y resina poliuretana a base de aceite de rícino (Ricinus communis L.)
The aim of this study was to manufacture and evaluate particleboards made with two alternative materials, seeking to develop a sustainable production process. Particles from Bambusa vulgaris Schrad were used because of the fast production cycle of this species. The binder used was castor oil (Ricinus communis L.) based polyurethane resin, since it is partial
Ambiente Construído. Publicado em: 2010-12
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10. Sodium lignosulphonate as agent of modification of lignocellulosic fiber surface and formulation of phenolic thermoset / Lignosulfonato de sódio como agente de modificação da superfície de fibras lignocelulósicas e da formulação de termorrígido fenólico
Due to the great current interest in biocomposites because of both the use of lignocellulosic fibers as reinforcers of polymer matrices and the production of matrices prepared from renewable raw material, this study has sought to improve the properties of phenolic thermosets using sodium lignosulphonate as a macromonomer, and the insertion of sisal fibers, e
Publicado em: 2010
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11. USE OF RICE HUSKS FOR THE PRODUCTION OF XYLITOL AND SILICA XEROGEL / APROVEITAMENTO DA CASCA DE ARROZ PARA A PRODUÇÃO DE XILITOL E SÍLICA XEROGEL
The generation of residual materials and its unavoidable disposal in the environment has been a reason of great concern, not only environmentally but also economically. The use of these renewable residual feedstocks, not only for the production of heat and energy, but also for the generation of technological products, has become a priority. In this study, it
Publicado em: 2009
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12. ESTUDO DA VIABILIDADE DE PRODUÇÃO DO BIODIESEL OBTIDO ATRAVÉS DO ÓLEO DE FRITURA USADO NA CIDADE DE SANTA MARIA - RS / FEASIBILITY STUDY OF BIODIESEL PRODUCTION OBTAINED THROUGH THE USED FRYING OIL IN SANTA MARIA CITY
The utilization of biodiesel has shown a promising potential in the whole world. Firstly, for its enormous contribution to the environment, due the qualitative and quantitative reductions levels of environmental pollution, and, secondly, as a strategic source of renewable energy to replace diesel and other oil derivatives. In this context the used frying oil
Publicado em: 2008