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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 62 for “"raceway"”.
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Enhancing CO2 mass transfer in algal raceway ponds through wave generation
… of microalgae is currently mostly done using raceway ponds. These ponds however suffer from low algal productivities compared to closed photobioreactors, in part due to inadequate CO2 mass transfer into the culture. A previous study at the University of Cape Town explored a method to improve …
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A resort hotel for the Thompson Raceway development in Thompson, Connecticut
Thesis (B.Arch.) Massachusetts Institute of Technology. Dept. of Architecture, 1957.
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Honeycomb fiber-reinforced polymer sandwich composites for development of aquaculture raceway systems
… of light, transportable and durable fish culture raceway systems. This study is concerned with the development and evaluation of prototype fish culture tanks using a Honeycomb FRP, termed HFRP, sandwich panel with sinusoidal core geometry, which is produced by Kansas Structural Composites Inc., …
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Identifying the dominant physical processes for mixing in full-scale raceway tanks
… a growing interest in the hydrodynamics of open raceway tank (RWT) reactors, and cultivating conditions that are favorable to algae growth. In particular, two impediments require attention: the lack of vertical mixing in the straight portions of the reactor, and the need for efficient …
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Effects of Raceway Pond Water and Nutrient Recycling on Microalgae Production and Harvesting
… of water and nutrient recycling, using pilot raceways and tubes settler tanks fed municipal wastewater.</p> <p>Two control raceway sets and two types of water and nutrient recycling raceway sets were operated concurrently. Each set was comprised of duplicate raceways (33-m<sup>2</sup> surface …
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Enhancing CO2 mass transfer in large scale algal raceway ponds through wave generation
The commercial growth of algae in raceway ponds is limited by the availability of carbon, supplied as carbon dioxide (CO2), resulting in a linear growth rate, also described as biomass productivity, determined by the mass transfer rate. This reduces the specific growth rate of the system, as the …
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Release of Juvenile Mussels into a Fish Hatchery Raceway: a Comparison of Techniques
… and subsequently release into a fish hatchery raceway during June, September and March. Juveniles released in June experienced a gradual decline in survival rate, with 50% survival after 72 days and stable survival thereafter until 200 days. Juveniles released in September and March experienced …
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Optimization of biomass and lipids production from microalgae using wastewater in a pilot scale raceway pond
Submitted in fulfilment of the requirements of the degree of Doctor of Philosophy: Biotechnology in the Faculty of Applied Sciences at the Durban University of Technology, 2021.
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Carbon dioxide mass transfer within algal raceway ponds and the potential for improvement using slopes to create wave
… processes for certain applications. The raceway pond is the most common reactor used for the growth of microalgae, due to low capital costs, low operating costs, higher energy efficiency, improved net energy recovery and ease of installation. Low carbon dioxide mass transfer, which limits …
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Lipid Production by Microalgae Treating Municipal Wastewater
… production of industrial algae operates in open raceway ponds that use minimal capital and energy inputs to culture algae. Raceway ponds can also be used to grow microalgae from municipal waste streams. Although high biomass productivity can be achieved in these systems, there remains a large …
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Analysing aspects of the performance of an ironblast furnace
… as the numerical model, a physical model of the raceway was developed, using dry ice particles to simulate the packed bed. The sublimation properties of the ice give a more realistic simulation to coke combustion, compared to the use of inert particles. The results of the experiment brought to …
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Environmental and economic assessment of microalgae-derived jet fuel
… The four cultivation technologies include open raceway ponds, horizontal serpentine tubular photobioreactors (PBRs), vertical serpentine tubular PBRs, and vertical flat panel PBRs. Open raceway ponds were modeled from previous literature, while the PBRs were modeled, validated and optimized for …
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CFD-DEM MODELLING OF PARTICLE-GAS REACTIVE FLOWS AND ITS APPLICATION IN BLAST FURNACE REGIONS
… and smoothing method is developed to describe raceway dynamics and coke combustion in a three-dimensional (3D) industrial-scale BF. The typical phenomena are illustrated in terms of raceway shape and size, temperature field and gas species distributions. 2) The typical in-furnace phenomena of a …
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Adaptive Laboratory Evolution of Scenedesmus obliquus for Increased Carbohydrate Content and Biomass Productivity
… and selection under outdoor conditions in a raceway pond at a high dilution rate to increase biomass productivity.</p> <p>Two cultigens were generated with the goal of increased carbohydrate content: K5 and K7. Both were mutagenized for 5 seconds and cultivated in 50-mL Klavins reactors. K5 …
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A dynamic engineering model of algal cultivation systems
… (PBR) and 6.7%+/5.33% for an open raceway pond (ORP) across five total species: Chlorella vulgaris, Desmodesmus intermedius, Galdieria sulphuraria, Galdieria sulphuraria Soos, and Nannochloropsis oceanica. The validated model assesses productivity at several locations in the United …
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