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 1077 for “"drinking water"”.
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Drinking Water Quality Monitoring
… detection of microbial contamination in drinking water using intrinsic fluorescence of the microorganisms. The prototype, “Blinky”, uses LEDs that emit light at 365nm, 590nm, and 635nm for ultraviolet, amber, and red light, respectively. At 365 nm, the cellular components excited include …
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Drinking Water Out of Streams
Drinking Water Out of Streams is a collection of poetry that plays with lyric and narrative form. The collection is arranged with lyric poems surrounding a series of linked narrative poems in the voice of a suburban high school French teacher. These are poems with a subject: both poetic forms weave …
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Strontium in Drinking Water: Assessing Strontium as a Drinking Water Contaminant in Virginia Private Wells
Approximately 80% of Virginians with private drinking water (PDW) sources are unaware of the quality of their drinking water. Strontium is a water quality contaminant gaining recognition at the federal level. At concentrations >1.5 mg/L, strontium substitutes calcium in the bones leading to bone …
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MIB Adsorption in Drinking Water Treatment
It was observed that chlorine had a deleterious effect on the ability of both PAC and GAC to adsorb MIB. From this, it was encouraged to avoid contacting activated carbon with chlorine.
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Arsenic Removal From Drinking Water By Electrocoagulation
Exposure to arsenic through drinking water poses a threat to human health. Electrocoagulation is an emerging water treatment technology that involves electrolytic oxidation of anode materials and in-situ generation of coagulant. Electrocoagulation is an alternative to using chemical coagulants for …
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Temperature Effects on Drinking Water Odor Perception
… affected odor perception when presented with two water samples. Following directional difference testing, panelists used FPA and evaluated water samples that contained odorants at either 25°C or 45°C. Samples containing geosmin cooled to 5°C were also evaluated. Sensory analyses experiments …
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Internal Cycling in an Urban Drinking Water Reservoir
… Indiana. Eagle Creek Reservoir serves the drinking water needs of over 80,000 residents. Within the last several years, algal blooms have created stress to the local treatment facility. The objective of this study was to examine how P cycling from oxygen deprived bottom sediments affects …
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Arsenic contamination study of drinking water in Nepal
A study of arsenic contamination of drinking water in Nepal was conducted. Samples were collected in Nepal in January 2000 from tube wells, hand dug wells, natural springs, municipal systems and surface water bodies. Samples were analyzed in Nepal using EM Quant@ test strips and Affiniti …
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Nepal drinking water quality assessment : nitrates and ammonia
Thesis (M.Eng.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 2000.
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Filtration of Giardia cysts from Haitian drinking water
Thesis (M.Eng.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 2002.
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Flow Induced Failures of Copper Drinking Water Tube
Excessive water flow velocities can contribute to rapid failures of copper premise plumbing systems. This is the first fundamental study to scientifically isolate mechanistic impacts from distinct flow induced failure mechanisms that include concentration cell corrosion, cavitation, particle/bubble …
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Biogeochemical Cycling of Manganese in Drinking Water Systems
… and chemical manganese (Mn) cycling in drinking water systems using concepts and tools from civil and environmental engineering, microbiology, chemistry, surface science, geology, and applied physics. Microorganisms were isolated from four geographically diverse drinking water systems …
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Cr(VI) Generation and Stability in Drinking Water
… and further understand the behavior of Cr(VI) in water systems, appropriate sample preservation methods are essential for accurate measurements. The ammonia buffer (recommended by EPA) was proven to be the most effective preservation when a holding time of 14 days is considered. Apart from proper …
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Assessing Biofiltration without Ozonation for Removal of Trihalomethane Precursors in Drinking Water at the Beaver Water District Drinking Water Treatment Plant
<p>Biofiltration without pre-ozonation has the capability to remove natural organic matter (NOM) fractions that serve as precursors of disinfection byproducts (DBPs), which include the four regulated trihalomethanes (THMs) and dichloroacetonitrile (DCAN). Rapid small-scale column tests (RSSCTs) and …
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Effective management solutions for biogenic odour in drinking water
Biogenic taste and odour in drinking water has become a global concern for water utilities, as eutrophication and climate change are increasing the likelihood of algal blooms and other microbial events in waterbodies. Unpleasant taste and odour perceived by consumers may result in complaints and …
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Chemical Contaminants in Drinking Water: An Integrated Exposure Analysis
… to the entire range of chemical contaminants in drinking water via inhalation, ingestion and dermal sorption. The study is focused on a residential environment. The various water devices considered are shower, bath, bathroom, kitchen faucet, washing machine and the dishwasher. All devices impact …
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