Aproveitamento da polpa de coco verde submetida ao congelamento rápido e lento

Pós-graduação em Agronomia (Energia na Agricultura) - FCA

Estudo da distribuição e do potencial de metilação do mercúrio em solos e sedimentos de áreas a serem inundadas para aproveitamento hidrelétrico: Vinicius Marques Gomes. -

Pós-graduação em Química - IQ

Aproveitamento de resíduos de laminação da madeira para a produção de painel estrutural

Products derived from wood or engineered products are becoming interesting alternatives to the replacement of solid wood in various applications, from structural components to the furniture industry and packaging. Among these products, there are panels built by strands, particles and fibers, each one having their particular characteristics and potential of use. Since the different types of panels are produced, waste generation is part of the process, and that more technological it is, it still generates losses of raw materials. Based on the need for rational use of raw materials and using almost full of industrially processed wood, It arises the proposal of this work, which seeks to use waste from the lamination, like pieces of strands, broken strands, strands rough, cracked strands to produce panels with structural characteristics of the OSL panel (Oriented Strand Lumber), LSL (Laminated Strand Lumber) and OSB (Oriented Strand Lumber). Besides the use of waste, this paper seeks an alternative to the use of the adhesive, because the industry uses formaldehyde-based adhesives, which over the press, they emit large amounts of formaldehyde, which is very aggressive to humans and environment. The panels made with polyurethane resin based on castor oil and hot-pressed were characterized by physical and mechanical tests according to specifications of European Standard (EN). High values of tensile strength, elastic modulus and density were found in the results of tests. Adding to stable values of swelling and moisture content, the panel studied adds attractive features to the panel market, especially in the civil construction

Proposta metodológica para a correção do coeficiente de retorno de esgoto sanitário em unidades com sistemas de aproveitamento de água pluvial

The use of rainwater for non-potable purposes generates a reduction in the consumption of treated water, however, this reduction is not observed in the generation of wastewater, as this is independent of the water source. In Brazil, the pricing on the services of collection and treatment of sewage, in general, is based on the coefficient of return of the sewage disposal system, which has a relation sewer / water proportional to the consumption of treated water measured at the consumer unit. The use of rainwater originating from utilization systems infer on the coefficient, underestimating the volume of wastewater generated. Therefore, this study presents a methodology for setting the coefficient of return. Different roof areas, reservoir volumes and rates of water consumption situations were simulated. The behavior of adjustment of the coefficient of return were also analyzed for the average area per capita roof (m² / inhabitant) of Rio Claro - SP. As a result, it can be seen that the adjustment of the coefficient of return is directly proportional to the increase of the roof areas and the volumes of reservoirs, and inversely proportional to the total water demand. The corrected coefficient of return showed the minimum value of 0.83 and a maximum value of 1.45, this variation corresponds to the maximum ratio between the demands of total water and rainwater, since the exploitation of rain water should be used only for non-potable uses, according to NBR 15527 / 07. To the municipality of Rio Claro - SP was noted an adjustment of the coefficient of return ranging from 0.99 to 6.61

Levantamento e análise dos padrões de qualidade nacionais e internacionais estabelicidos para reuso de efluentes e aproveitamento de água de chuva para fins não potáveis em áreas urbanas

The objective of this work is present and analyze the standards and guidelines associated with the protection of health of the user of waters less noble, for purposes other than drinking, and more specifically, the criteria descriptors of quality of these waters and the assessment of microbiological risk associated to its use aiming to establish, with bases and scientific criteria, the tolerable risk and the definition of standards for the microbiological quality. To this end, the author makes use of investigative exploratory method based on bibliographic survey and acquisition and posterior analysis, presentation and discussion about the topics discussed. The final text may inform and subsidise decisions regarding the definition of new values (preparation of new standards) and in the definition of appropriate technology

Aproveitamento de resíduos na composição de painel sarrafeado amarrado: um estudo econômico

The manufacture of plywood panel already has about eighty years in Brazil. In general, plywood panels differ by their nature, composition and manufacturing; the most common MDF, OSB, particle and the joist. Some of these products can be generated fromindustrial waste, as the panelblockboard, you can use in their training waste destop boards (Battens), from industrial processes or processing of primary wood. This work aims to present the detailed study of the economic viability of utilization of industrial solid waste timber through the acquisition of a machine amarradeira of joists in a wood processing unit in city Itapeva-SP. We studied the application of wastein the composition of kernels blockboard panel tied its commercial acceptance and future prospects market. We noticed great economic advantage in investing in the study, compared with the transformation process of the joists in biomass energy, although the investment decision involves not only financial matters but also the acceptance market the product to be manufactured

Proposta de aproveitamento de resíduos de uma indústria moveleira para produção de chapas de revestimento decorativo

Industrial activity is growing at an increasingly rapid accelerated bringing impacts not very consistent with the preservation of the environment, since it uses its resources to meet its countless demands, making the sources begin to become increasingly scarce. Therefore, this paper proposes the use of waste a furniture industry for the production of panels for the interior decoration. Were used to manufacture them, two different types of materials, where such, the Kraft paper is more efficient for the underpinnings of these panels. Regarding the type of glue used, the contact yielded better results. The initial conditions for the development of such a proposal were based on existing laws for solid waste as well as proposals for environmental agencies

Aproveitamento energético de resíduos de esgotamento sanitário

This paper presents alternatives for waste energy recovery from the sewage of cities. Through a review of the literature it is observed that the technologies studied are usually turbines, microturbines, and engines adapted to the use of biogas. For project design analyzes the technologies found in some sewage treatment plants in Brazil and the world, compared with those found in the literature. With this study it can be concluded that the most used technologies are microturbines and motor generator sets, which are already implemented in some locations in the USA, Europe and even Brazil. It can also be concluded that the energy recovery of waste from sewage can enable design of wastewater treatment plants thereby contributing to improved quality of life

Implementação de um tuboexpansor na refinaria do Planalto Paulista – REPLAN com objetivo do aproveitamento da energia contida nos gases residuais do FCC – Fluid Catalytic Cracking na geração de energia elétrica

The steel type AISI 4130 (ultra-high strength steel) is an alloy of low carbon and its main alloying elements are chromium and molybdenum, which improves the toughness of the weld metal. It has numerous applications, especially where the need for high mechanical strength. It is widely used in equipment used by the aviation industry, such as cradle-tomotor, and this is the motivation for this study. Cots are of fundamental importance, because the engine supports and maintains balance in the fixed landing gear. This equipment is subjected to intense loading cycles, whose fractures caused by fatigue are constantly observed. Will be determined the effects caused by re-welding the structure of aeronautical equipment, and will also study the microstructure of the metal without welding. The studies will be done on materials used in aircraft, which was given to study. The results provide knowledge of microstructure to evaluate any type of fracture that maybe caused by fatigue. Fatigue is a major cause of aircraft accidents and incidents occurred, which makes the study of the microstructure of the metal, weld and re-solder the knowledge essential to the life of the material. The prevention and control of the process of fatigue in aircraft are critical, since the components are subjected to greater responsibility cyclic loading

Potencial de aproveitamento de agregados reciclados de resíduos da construção e demolição

CONAMA Resolution 307 / 02, in Article 4, states that the primary goal of those involved in the reuse process of construction and demolition waste is not the generation of such wastes, secondarily is the reduce, reuse, recycling and proper disposal of such material. The disposal problem of large volumes of waste generated coupled with the scarcity of natural resources and environmental degradation involved in the extraction process of such materials resulted in several studies, that after many analyzes proposed various forms of reuse and recycling . The NBR 15.116/04 provides requirements for the use of recycled aggregates in paving and concrete without structural function. This work aims to show the usage potential of recycled aggregates from waste generated in construction and demolition sampled Group AB Areias, Pindamonhangaba (SP) in order to meet the standards in Brazil, as well as the environmental contribution by reducing the use of raw materials extracted from nature. After stabilization and particle size analysis of the California Bearing Ratio and Proctor, obtained mixtures of recycled aggregates showed higher values submitted by the minimum standards related, with excellent potential for use in paving

Viabilidade do aproveitamento de resíduos de madeira para produção de móveis

The need to use waste from wood processing industry grows due to environmental demands imposed by laws, so like the need to introduce more competitive products in the market (it means better quality and acceptable cost) who must submit by the rational use of raw material, usually turning waste to sub products, what adds higher value for that. To this research, specific case from Ribon Company, located on Camaçari, Bahia-Brazil, has been studied. It is a treated wood producer. Bulk of monthly wood logs there is 70 m3. Its yield is 71,43%, where bulk of generated waste is monthly 20m3. As an exploitation way from generated waste, it has been suggested some options like: erosion protection to specific areas, a wildlife shelter as an henhouse etc, recreational articles, coal, linings, treadmills. However this research will give focus to the furniture design made of waste. As a conclusion, there is very much need to assign new utilizations to that sub used materials, since there is significant amount to increase company’s productive yield

Aproveitamento de sementes de abóboras (Cucurbita sp) como fonte alimentar

Brazil processes much of its fruit by producing natural juices, candy preserves, extracts and pulps; however, almost 60% of their total weight derives from peels, leaves and seeds. As a result, the emphasis lies most strongly on the use of waste, especially waste that is not commonly used by the food industry or by consumers. The use of seeds would increase the viable sources of raw materials, lower operating costs of industries and would promote the development of new food products, since they are our main sources of protein, fat, fiber, functional compounds, vitamins and minerals salts. This paper presents alternatives for the use of pumpkin seeds (Cucurbita sp), which are often underutilized or discarded. It also demonstrates the bioactive and anti-nutritional compounds and their health effects.

Confecção e avaliação de chapas de madeira aglomerada com aproveitamento de resíduos de marcenaria industrial

Pós-graduação em Engenharia Civil - FEIS

Aproveitamento de Água de Chuva Para Fins Não Potável

Over the years, water has become an increasingly valuable resource and scarce, this situation is attributed to factors such as population growth, poor distribution and increasing degradation of water resources as a result of indiscriminate human activities in the middle environment, making their dwindling availability and increasing its cost. I n this context , the use of rainwater for non-potable purposes begins to be stimulated in Brazil , as a measure to preserve this resource , while in countries such as Japan and Germany , this technique has already been used for a long time. The ability to capture rainwater reduces the demand for sanitation companies, also resulting in cost reduction with the water bill and the risk of flooding in the event of heavy rains. The stored water is used only for non-potable purposes, such as toilets, taps into the garden, for washing vehicles and clothing. This work was developed with the aim of presenting the importance of rational use of water, associated with viability constructive economic and consumption of the installation of rain water harvesting, and for that, considered four case studies. From this study, it was found that the implementation of this system has led to a reduction in costs of water and sewer consumption poses no hazard to the user and its installation does not require significant changes in building construction, however, in relation to the economy, should be made a detailed analysis in each case for investment to bring a suitable financial return within the lifetime of the system

Tecnologias de captação e aproveitamento de água de chuva para residências uni familiares

Water scarcity is becoming an increasing problem and more evident worldwide, rainwater utilization is characterized for being one of the simplest and cheapest solutions to preserve drinking water and is a known alternative technology and used to promote sustainability in buildings and reducing pressure on surface waters, it would also reduce runoff and can minimize flooding. The rainwater, while not potable may be used in potable water usage activities, and may thus saving 30 to 40% of potable water. In this work one can see the importance of the capture and use of rainwater (CAAC), bringing economy, to reduce consumption of potable water, reducing the problem of water shortage, and which methods and materials needed to cause its implementation. The work also promoted the characterization of rainwater in the city of Guaratinguetá (SP) and studied its potential use in public housing, calculating the volume needed for implementation of the tank and the cost to implement all rainwater utilization system, but because it is a region with a median rainfall index and the popular houses present an area of small water capitation, the result was not satisfactory. The cost for implementation was high and the financial return was well above average. The government should encourage and support more CAAC, as not thinking about the financial side is advisable to be widespread throughout the country, the benefits it can bring