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 120 for “"High salinity"”.
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Carbonate chemistry in high salinity waters
… equilibrium diagrams for the carbonate system in high salinity waters, i.e. for single aqueous phase, solid-aqueous phase, gasaqueous phase and solid-aqueous-gas phases. Such diagrams have been developed for low salinity waters, viz. Deffeyes and Caldwell-Lawrence diagrams and modifications of …
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Membrane distillation for high salinity desalination
… distillation (MD) systems can have significantly higher efficiencies than their single stage counterparts. However, multistage MD system design has received limited attention. In this work, the performance of a multistage vacuum membrane distillation (MSVMD) which is thermodynamically similar to a …
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GENERATING BIOENERGY AND HIGH-VALUE PRODUCTS FROM HIGH SALINITY FOOD WASTE
… (VFAs) production from household food waste and high salinity food processing waste were explored using anaerobic digestion and dark fermentation processes, respectively. This study tested adding value to three organic waste streams: household food waste, high salinity food processing waste …
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Application of surfactant-polymer enhanced oil recovery in a high- salinity, high-temperature carbonate reservoir
… it faces major drawbacks when applied in high-temperature, high-salinity carbonate formations. Such harsh environment leads to both surfactant and polymer degradation. Moreover, because of the positive charge of carbonate surfaces and the large concentration of divalent cations, large …
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Material development and characterization for high salinity water for desalination by membrane distillation at high temperature and pressure
… solids (TDS) values more than 50,000 ppm, much higher that the TDS value of the seawater (~35,000 ppm). Desalination of high salinity water, which is currently being disposed by underground injection, can provide an alternative water source for industrial applications. As Reverse osmosis and …
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Desalination systems for the treatment of hypersaline produced water from unconventional oil and gas processes
… as it can be hypersaline, with salinities as high as nine times seawater. Typical disposal strategies for produced water, such as deep well injection, can be unfeasible in many unconventional resource settings as a result of regulatory, environmental, and/or economic barriers. Consequently, …
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Thermodynamic analysis of electrodialysis
… desalinating brackish water and in concentrating high-salinity brines. In order to better understand how the energetic performance of this technology can be improved, we first study the sources of entropy generation at different salinities, and locate areas where possible improvements need to be …
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Prokaryotic diversity and ecosystem functioning in hypersaline environment: a metagenomic study of the Cagliari salterns
… of outstanding scientific interest, hosting highly specialized microbial communities shaped by steep physicochemical gradients. Despite the well-documented diversity of Mediterranean salterns, Sardinian systems remain largely unexplored. This study represents the first comparative metagenomic …
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Effects of Ammonia, Salinity and Oxygen on the Growth and Energetics of the Grass Shrimp, <i>Palaemonetes pugio</i>
… examined under various combinations of ammonia, salinity and dissolved oxygen. Experiments were performed to determine the effects of multiple stresses on the growth and physiological processes of the shrimp. The experimental design also allowed an evaluation of the effectiveness of several …
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Red Sea Intermediate Water in the greater Agulhas Current system
… transport of RSIW along the Agulhas Current is highly variable making any estimates of transport for more than a singular hydrographic section impossible. In terms of the maximum density level, RSIW spreading appears in some cases to lie as deep as the ~crn=27.70 even when NIDW was introduced …
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Tungsten Coil Electrothermal Vaporization for Atomic Spectroscopy
… that contain carbide-forming species or have high salinity or organic concentrations.
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ESTIMATION OF QUANTITATIVE GENETIC PARAMETERS OF THE EASTERN OYSTER (CRASSOSTREA VIRGINICA) IN THE GULF OF MEXICO
… programs. Gulf habitats feature diverse salinity environments that may require oysters bred for habitat-specific optimal genetic characteristics. In this work, genetic parameters for performance in habitats with different salinity were estimated. In September 2020, 102 males and 102 …
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The Effects of Salinity on Zootechnical Performance of Spotted Seatrout (<i>Cynoscion nebulosus</i>) in Recirculating Aquaculture Systems
… making production challenging in areas where high salinity water is not available. This study aimed to document the effects of salinity on zootechnical performance of spotted seatrout embryos, early larvae, and juveniles in recirculating aquaculture systems to assist with the development of …
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XvERD15, an early-responsive gene to stress from Xerophyte viscosa
… within I hr post-exposure to dehydration and high salinity stress treatments. There is however limited literature on the functionality of ERD15. A cDNA showing homology to ERD15 was isolated from a library generated by low temperature stress treatment of Xerophyta viscosa and was subsequently …
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Impacts of Oil Exposure During Early Life Development Stages In Sheepshead Minnows (<i>Cyprinodon variegatus</i>) Under Different Environmental Factors
… stressors such as oxygen concentration, and salinity. The consequence of combined exposure to crude oil and suboptimal environmental factors during early life stage development of fish is still largely unknown. The objective of this project was to investigate the impacts of exposure to crude …
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A survey of the potential waterfowl management areas of eastern Virginia, 1949
… of duck foods in the Virginia marshes are salinity, type of bottom, and tide fluctuation. The marshes that are high producers of duck foods all have a low salinity, soft muck bottoms that are covered by water except at the lower stages of the tide. On the other hand the low production …
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Evaluating the role of flow and specific conductivity on stream metabolism across a mining-induced salinity gradient in the Appalachian Coalfield
… but there are few measurements assessing how salinity effects on organisms influence whole-ecosystem processes, specifically stream metabolism. Understanding how gross primary production (GPP) and ecosystem respiration (ER) respond to salinity, stream flow, and their association is needed to …
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Microfluidic engineering of water purification
… polarization (ICP) desalination for high salinity brine treatment, and iii) development of electrocoagulation (EC) - ion concentration polarization (ICP) desalination hybrid that removes dissolved ions and non-ionic contaminants from water in a single device. First, we employed an …
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ANAEROBIC TREATMENT OF HIGH SALINE PHARMACEUTICAL WASTEWATER
High salinity and complex organic content are two major challenges for biological treatment of saline industrial effluents. In this study, various anaerobic technologies were attempted including anaerobic sequencing batch reactor (AnSBR), up-flow anaerobic sludge blanket (UASB) and anaerobic …
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