Recycled Polymers
Mostrando 13-18 de 18 artigos, teses e dissertações.
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13. Recirculação de água de lavagem de filtros em escala piloto: uma contribuição para avaliação dos perigos associados à presença de protozoários / Recycling of filter backwash water in pilot scale: a contribution for evaluation of the hazards associated to the presence of protozoa
Characterization of the filter backwash water (FBW) from the Federal University of Viçosa water treatment plant (UFV WTP), as well as the results from experiments conducted in a pilot scale WTP, suggested that recycling FBW could be regarded as a hazard introduction in the treatment process. The average concentration of Giardia spp. and Cryptosporidium spp.
Publicado em: 2007
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14. Uso e Aplicação do Poliestireno Expandido (EPS) Reciclado para Impermeabilização por Impregnação de Superfícies de Concreto Pré-fabricado
The performance and the surface appearance of concrete are both related to its porosity. A reduction in porosity, with a consequent reduction in permeability, could be an option for increasing the durability of the concrete and preserving its surface characteristics. Esthetically, deterioration of the concrete surface causes an imbalance in the utility x app
Publicado em: 2005
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15. FINITE ELEMENT SIMULATION OF THE COOLING PHASE OF ROTATIONAL MOLDING PROCESS / SIMULAÇÃO VIA ELEMENTOS FINITOS DA ETAPA DE RESFRIAMENTO DA MOLDAGEM ROTACIONAL
The purpose of the present work was to simulate the cooling phase of the rotational molding in order to evaluate the influence of some variables in the cooling time, that is the longest one in the process. ANSYSTM software was used to perform the simulation using the finite element method, thus it will be possible to work with complex geometries in future wo
Publicado em: 2004
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16. Estudos e desenvolvimento de processos de pós condensação no estado sólido do PET reciclado / Studies and development of solid state polymerization process on poly(ethilene terephalate) recycled abstract
The increasing requirement of Ply(ethylene terephtalate) PET from the package market has made this available to the public discarded, quickly, since the technology of multi way package hasnt been possible due to high cost on the plant and its inadequate reuse. In the PET mechanical recycling, the most used way worldwide to recovery this material, the feature
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 04/12/2003
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17. Reciclagem energetica de pneus automotivos atraves de reator de leito fluidizado : uma proposta para a questão ambiental
The growth of the big cities, industrialization and goods consumptions, have forced the civilization to live with more intensive environmental degradation process, threatening both the nature and energy resources, besides the bigger production of gas, liquid and solid wastes. That brings a greater worry related to the sustentability of the growing economy wo
Publicado em: 1999
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18. Formulações de misturas de polipropileno pos-consumo e virgem para processamento por injeção
This project originated from the necessity to obtain recycled polymers with quality and prices competitive with virgin resin. We chose polypropylene (PP) due to its properties, versatility and frequent use in injection moulding. The processing parameters of PP for ex:trusion were determined, verifying that the increase of the temperature profile and of the s
Publicado em: 1999