Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 29 for “"Use of waste"”.
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Optimisation of use of waste materials by Rhodopseudomonas palustris
… the last few decades has been the generation of power by biodiesel, derived from plants, rather than traditional fossil fuels. However, a consequence of this increase in biodiesel manufacture is an increase in the production of waste glycerol – a low-value by-product. There is currently no …
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Investigation into the use of waste tyre shreds in reinforcement of sandy soils in South Africa
End-of-life tyres are a disposal problem resulting from the large volumes produced worldwide every year. Waste tyres are difficult to manage because of their sheer volume and the potential impacts on human health and environment. These discarded tyres, currently stockpiled and dumped in the open, …
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Análise teórico-experimental do coeficiente de perfomance (COP) de um sistema de refrigeração por jato-compressão
The use of waste heat of energy conversion equipment to produce a cooling effect, consists currently in a very interesting way of efficiency improvement of energy systems. The present research has as intention the theoretical and experimental study of a new intermittent refrigeration system ejector …
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PROPOSIÇÃO DE UM SISTEMA DE GESTÃO NA ATIVIDADE DE CO-PROCESSAMENTO DE RESÍDUOS INDUSTRIAIS EM FORNOS DE CIMENTO
… the increasing concern regarding the practices of disposal of industrial waste in order to provide a sustainable development. The impossibility or lack of options when treating certain residues and the desire to eliminate risky environmental liabilities leads to the selection between diverse …
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Harnessing thermoacoustics for waste heat recovery
… an increase in efficiency. The U.S. Department of Energy estimates that 20 to 50% of the energy consumed in manufacturing processes is lost in some form to waste heat. The purpose of this study is to review the waste heat recovery technologies currently available in both commercial and research …
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Characterisation of Polymer-based Wood-substitute for Sustainable Building and Construction
Materials have always been used for the commodities and convenience of mankind. However, the recognition of the impacts of the global demand for materials and resources has been leading to a growing concern with regards to production and consumption patterns, resources scarcity and waste …
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Waste City: alternative architecture for radical change
… is an exploration into the possible creation of radically alternative ways of dwelling within the city, whereby inhabitants would construct their own environments through the use of waste as a building resource. The project challenges and contests the status quo of architectural production, …
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Stock-constrained design of pseudo-standard walls from studs off-cuts
The AEC industry is responsible for 40% of global greenhouse gas emissions and 38% of EU waste, much of which is landfilled. The AEC waste represents an immense portion of resources that could be used instead of new materials. Many ongoing research projects have explored ways of reusing irregular …
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The effect of heat compression on mechanical behaviour and moisture content of pineapple leaf fibre and sugarcane bagasse waste for plate disposal
The waste from farming and industry could be reduced and used as raw materials in construction to achieve sustainable technologies. This study focuses on the use of waste products from the pineapple leaf and sugarcane bagasse as compounds in replacing polystyrenes and others plastics glass in the …
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Echoes of Eliot's The waste land in three modern American novels
… essay demonstrates how three popular writers of the twentieth century have created novels that contain echoes of Eliot's poem. They are F. Scott Fitzgerald's The Great Gatsby (1925), Ernest Hemingway's The Sun Also Rises (1926), and John Steinbeck's To a God Unknown (1933). I chose these …
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Incorporation Of High-Volume Fly Ash To Produce Structural Lightweight Concrete
Concrete industry is one of the main industries using large proportion and volume of our natural resources. Ordinary Portland Cement is an important source for the emission of carbon dioxide into the atmosphere because of burning fuel and raw materials’ decomposition during the production process …
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Carbon Supported Metal Carbide Catalysts for the Reduction of Carbon Dioxide
Development of active and selective catalysts for the conversion of CO2 into valuable products is a promising strategy for reducing the environmental impact of CO2 released from the use of fossil fuels. The manufacture of these catalysts should also consider the use of waste materials and reduction …
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Analysis of the Physiochemical Interactions of Recycled Materials in Concrete
This thesis broadly addresses the issue of materials sustainability in the production of Portland cement concrete. Two methods are presented, both aimed at achieving more sustainable concrete through the use of waste and recycled materials. The first method involves utilizing reclaimed asphalt …
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Practical Optimisation of District Energy Systems: Representation of Technology Characteristics, Demand Uncertainty, and System Robustness
… energy production capitalises on economies of scale. Furthermore, geographic proximity facilitates the use of waste heat from electricity production to meet thermal demand. However, it is difficult to assess which configuration of technologies will best suit a cluster of users. Mathematical …
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Irradiated recycled plastic as a concrete additive for improved chemo-mechanical properties in hardened cement pastes
… production contributes heavily to greenhouse gas emissions. Thus a need exists for the development of durable and sustainable concrete with a lower carbon footprint. This can be achieved when Portland cement is partially replaced with another material without compromising the concrete's …
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Metodología para la evaluación de la sostenibilidad en ladrillos de mortero dopados con triturado de hueso de oliva
The technological advances of recent decades have focused attention on the environmental efficiency of all productive sectors, and the search for techniques that reduce the consumption of natural resources and minimize the impact on the natural environment. In this sense, it is crucial to highlight …
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Wastewater Treatment of Contaminated Aqueous Leachate
… a dramatic increase in the usage and pollution of water and a corresponding need to conserve, treat and re-use the resource. Water quality and scarcity are major global concerns and within industrial societies the treatment of waste water and aqueous leachate is of particular significance. One …
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Investigation of the closed loop processing systems developed for microalgal biofuels
The algal biofuels industry is under development and being investigated at large scale all around the world. To improve the viability of algal biofuels the ability to use closed loop systems that recycle waste and water thereby decreasing the overall waste produced while increasing profitability is …
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Re-defining the Architectural Design Process Through Building a Decision Support Framework for Design with Reused Building Materials and Components
Waste from construction and demolition-building activities is increasing every day. Landfills have almost reached their capacity. When thinking about the negative impact of demolishing activities on the environment it becomes very necessary to think about reusing and recycling building materials in …
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Stiffness and deformation properties of asphalt open graded friction course containing cement coated natural aggregates
The primary objective of this research study was to observe the changes in the physical properties of cement coated secondary aggregates, namely surface roughness and angle of internal friction and how these properties are related to the performance of Open Graded Friction Course asphalt mixtures, …
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